Blasting pattern generation system and blasting pattern generation method

Abstract

To provide a blasting pattern generation system 1 and a blasting pattern generation method capable of generating a blasting pattern suitable for a natural ground part Gx of an excavation object.SOLUTION: A blasting pattern generation system 1, comprising a storage part 24 storing drilling data 29 acquired by drilling of excavated natural grounds Ga, Gb and a plurality of basic pattern data indicating a blasting pattern, a display part 21 displaying section data 28 obtained by sectioning a design cross section of a tunnel T, section update means (terminal control part 25) for changing a proportion of sections in the section data 28, and strength estimation means (terminal control part 25) for calculating an estimated energy value for each section in a natural ground portion Gx to be excavated, this device is provided with an extraction means (terminal control part 25) for extracting a part corresponding to a section from basic pattern data corresponding to an estimated energy value and a generation means (terminal control part 25) for generating synthetic pattern data 27 obtained by synthesizing the extracted part corresponding to the section.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a blasting pattern generation system and a blasting pattern generation method for generating a blasting pattern for excavating, for example, the natural ground in front of a tunnel face by blasting inside the tunnel. [Background technology]

[0002] BACKGROUND ART At a tunnel excavation site, it is known to charge a plurality of charge holes formed by drilling holes in the tunnel face, and then excavate the natural ground in front of the tunnel face by blasting, thereby proceeding with the excavation of the tunnel. In this case, an operator operating a drilling device such as that in Patent Document 1, or an automatic drilling device that automatically drills holes, drills the charge holes based on a blasting pattern, which is a design drawing that illustrates the drilling position, drilling length, drilling direction, etc.

[0003] Conventionally, since the strength of the natural ground changes as the tunnel excavation progresses, it is desirable to use an appropriate blasting pattern for each part of the natural ground to be excavated. Therefore, for example, Patent Document 1 proposes a technique for selecting a blasting pattern suitable for the part of the ground to be excavated based on the hardness of the ground drilled before the part of the ground to be excavated.

[0004] Specifically, in Patent Document 1, a blasting pattern generation system that pre-stores multiple blasting patterns according to the hardness of the ground estimates the strength of the ground portion to be excavated based on the strength of the ground that was drilled before the ground portion to be excavated. Subsequently, in Patent Document 1, a blasting pattern suitable for the natural ground portion to be excavated can be selected by selecting a blasting pattern according to the estimated natural ground strength.

[0005] However, since Patent Document 1 estimates the strength of the entire natural ground portion to be excavated, there is a risk that a large difference in strength may occur between the estimated strength and a portion of the natural ground portion to be excavated.

[0006] Therefore, in Patent Document 1, when the target ground portion is excavated by blasting using a selected blasting pattern, there is a risk that the occurrence of "hits" where excavation is insufficient and "over-excavation" where excavation is excessive may not be sufficiently reduced, so there is room for improvement. [Prior art documents] [Patent documents]

[0007] [Patent Document 1] Japanese Patent Application Laid-Open No. 2015-229832 Summary of the Invention [Problem to be solved by the invention]

[0008] In view of the above-mentioned problems, the present invention aims to provide a blasting pattern generation system and a blasting pattern generation method that can generate a blasting pattern suitable for the natural ground portion to be excavated. [Means for solving the problem]

[0009] This invention is a blasting pattern generation system that generates a blasting pattern based on the excavation status of an excavated natural ground that was excavated before the natural ground portion that is the excavation target, including the tunnel face, and is characterized by comprising: a storage means that stores drilling data obtained by drilling charge holes in the excavated natural ground and a plurality of basic pattern data that indicate blasting patterns with different ranges of corresponding strength indexes; a display means that displays partition data in which the designed cross-sectional shape of the tunnel is divided into a plurality of partitions; a partition update means that accepts user operations and changes the proportion of at least one of the partitions in the partition data to update the partition data; a strength estimation means that calculates an estimated strength that indicates the strength index of the partition in the natural ground portion to be excavated based on the drilling data; an extraction means that selects, for each partition, the basic pattern data corresponding to the estimated strength calculated by the strength estimation means and extracts from the basic pattern data a portion that corresponds to the partition; and a generation means that generates a new blasting pattern as composite pattern data by combining the portions extracted from the basic pattern data that correspond to the partitions.

[0010] The present invention also provides a blasting pattern generation method for generating a blasting pattern based on the excavation status of an excavated natural ground that has been excavated before the natural ground portion that is the excavation target, including the tunnel face, and which is characterized by carrying out the following steps: a display step in which, with drilling data obtained by drilling a charge hole in the excavated natural ground and a plurality of basic pattern data indicating blasting patterns with different ranges of corresponding strength indexes stored in a storage means, the display step displays on a display means partition data in which the designed cross-sectional shape of the tunnel is divided into a plurality of partitions; a partition update step in which, in response to a user's operation, the partition update means changes the proportion of at least one of the partitions in the partition data to update the partition data; a strength estimation step in which, based on the drilling data, the strength estimation means calculates an estimated strength indicating the strength index of the partition in the natural ground portion to be excavated; an extraction step in which, for each partition, an extraction means selects the basic pattern data corresponding to the estimated strength calculated in the strength estimation step and extracts from the basic pattern data a portion corresponding to the partition; and a generation step in which a generation means generates a new blasting pattern as composite pattern data by combining the portions extracted from the basic pattern data corresponding to the partitions.

[0011] The natural ground portion to be excavated refers to the natural ground in the range separated from the tunnel face by the desired blasting advance length in the tunnel excavation direction. The excavated natural ground refers to a natural ground portion that was excavated one or more times before the natural ground portion to be excavated. The drilling data refers to, for example, the oil pressure, feed pressure, damping pressure, impact pressure, drilling speed, drilling length, drilling direction and reaction pressure calculated for each charge hole based on signals output by various sensors of the drilling device that drills the charge hole.

[0012] The strength index is an index related to the strength of the ground, and refers to, for example, the drilling energy value required for drilling calculated based on drilling data, or the drilling data such as hydraulic pressure value, reaction force value, and drilling speed.

[0013] According to this invention, by calculating the estimated strength of each section indicated by the section data based on the drilling data of the excavated natural ground, it is possible to calculate the estimated strength distribution in the natural ground portion to be excavated. Furthermore, by combining the blasting patterns of each section extracted based on the estimated strength, the blasting pattern generation system can generate a new blasting pattern that takes into account the variation in estimated strength in the natural ground portion to be excavated.

[0014] Here, since the blasting pattern generation system can change the proportion of at least one section in the section data, the number of charge holes contained in each section in the excavated ground can easily be varied depending on, for example, the occurrence of ``hits'' or ``over-excavation'' in the excavated ground, or the crushing status of ``mud.''

[0015] As a result, the blasting pattern generation system and blasting pattern generation method can generate new blasting patterns that take into account not only the variation in estimated strength in the ground portion to be excavated, but also the excavation conditions of the excavated ground. Therefore, the blasting pattern generation system and the blasting pattern generation method can generate a blasting pattern that is more suitable for the part of the ground to be excavated.

[0016] In addition, the blasting pattern generation system and blasting pattern generation method can reduce the occurrence of "hits" and "over-excavation" when blasting the target natural ground, and can also improve the crushing of "mud," thereby improving the efficiency of tunnel excavation.

[0017] In one aspect of the present invention, the partition data may be configured to partition the design cross-sectional shape so as to include rectangular partitions that are approximately rectangular within the design cross-sectional shape, and the partition update means may be configured to change the proportion occupied by the rectangular partitions through operation by the user.

[0018] With this configuration, the user can simultaneously and easily change both the proportion occupied by the rectangular section and the proportion occupied by at least the sections adjacent to the rectangular section simply by changing the height and / or width of the rectangular section.

[0019] This allows the blasting pattern generation system to efficiently change the sizes of multiple sections in the section data, thereby efficiently generating blasting patterns suitable for the natural ground portion to be excavated.

[0020] In another aspect of the present invention, the generating means may be configured to generate a drilling length corresponding to the estimated strength for each section calculated by the strength estimating means in association with the composite pattern data. With this configuration, the drilling length of each section can be optimized according to the estimated strength, making it possible to reduce and smooth out unevenness on the face after blasting.

[0021] In addition, as an aspect of the present invention, a pattern change means may be provided that accepts operation by the user to change the blasting pattern for each section in the composite pattern data generated by the generation means to a different blasting pattern.

[0022] With this configuration, the user can modify the blasting pattern of some sections in the composite pattern data, for example, depending on the occurrence of ``hits'' or ``over-excavation'' in the excavated ground, or the crushing status of ``mud.'' This allows the blasting pattern generation system to utilize the user's experience to generate blasting patterns that reduce the occurrence of "hits" and "over-excavation."

[0023] As another aspect of the present invention, a correspondence change means may be provided which changes the correspondence between the estimated intensity calculated by the intensity estimation means and the basic pattern data selected by the extraction means in response to an operation by the user.

[0024] According to this configuration, the basic pattern data selected based on the estimated intensity can be changed by a user's operation, so that the composite pattern data generated based on the estimated intensity can be made different for each tunnel, for example. This allows the blasting pattern generation system to generate a suitable blasting pattern for each tunnel.

[0025] In another aspect of the present invention, the strength estimation means may be configured to calculate a strength index for each of the charge holes based on the drilling data, and to calculate the estimated strength for each of the sections using the effective strength indexes from among all the calculated strength indexes.

[0026] The above-mentioned effective strength indexes are strength indexes other than those that are noise among all strength indexes, and refer to strength indexes that fall within the variance range obtained by, for example, assuming the distribution of strength indexes to be a standard normal distribution, calculating the standard deviation of the strength indexes in all sections, and multiplying the calculated standard deviation by a predetermined coefficient.

[0027] This configuration improves the accuracy of the calculation of the estimated strength for each section, allowing the selection of suitable basic pattern data for each section, thereby enabling the blasting pattern generation system to generate blasting patterns suitable for the natural ground portion to be excavated.

[0028] In another aspect of the present invention, the memory means stores at least first drilling data, which is the drilling data in the excavated ground one step before the ground portion to be excavated, and second drilling data, which is the drilling data in the excavated ground two or more steps before the ground portion to be excavated, and the strength estimation means may be configured to calculate a first average value indicating the average value of the strength index of the section based on the first drilling data, and to calculate a second average value indicating the average value of the strength index of the section based on the second drilling data, and to calculate the estimated strength for each section based on the rate of change of the first average value relative to the second average value.

[0029] According to this configuration, the estimated strength of each section in the natural ground portion to be excavated can be calculated based on the transition of the average value of the strength index, thereby improving the accuracy of calculating the estimated strength. This allows the blasting pattern generation system to select more suitable basic pattern data for each section, thereby generating a blasting pattern that is more suitable for the natural ground portion to be excavated.

[0030] Another aspect of the present invention may include a data acquisition means for acquiring the drilling data from a drilling device that drills the natural ground portion of the excavation target, and an output means for outputting the composite pattern data generated by the generation means to the drilling device.

[0031] With this configuration, each time a hole is drilled in the ground to be excavated, a blasting pattern corresponding to the estimated strength distribution of the next ground to be excavated can be generated and output to the drilling device, thereby improving the efficiency of tunnel excavation.

[0032] The present invention also provides a blasting pattern generation system for generating blasting patterns based on the excavation status of excavated natural ground excavated before the natural ground portion to be excavated, including the tunnel face, and includes a storage means for storing drilling data obtained by drilling a charge hole in the excavated natural ground and a plurality of basic pattern data showing blasting patterns with different ranges of corresponding strength indexes, a display means for displaying partition data obtained by dividing the design cross-sectional shape of the tunnel into a plurality of partitions, a partition update means for receiving an operation by a user and changing the proportion of at least one of the partitions in the partition data to update the partition data, and an estimated strength indicating the strength index of the partition in the natural ground portion to be excavated, the storage means for storing drilling data obtained by drilling a charge hole in the excavated natural ground and a plurality of basic pattern data showing blasting patterns with different ranges of corresponding strength indexes, the display means for displaying partition data obtained by dividing the design cross-sectional shape of the tunnel into a plurality of partitions, a partition update means for receiving an operation by a user and changing the proportion of at least one of the partitions in the partition data to update the partition data, and The system is equipped with an intensity estimation means for calculating based on data, an extraction means for selecting the basic pattern data corresponding to the estimated intensity calculated by the intensity estimation means for each section and extracting the part corresponding to the section from the basic pattern data, and a generation means for generating a new blasting pattern as composite pattern data by combining the part corresponding to the section extracted from the basic pattern data, wherein the section data is configured to divide the design cross-sectional shape into sections so as to include an arc section, which is an approximately arc-shaped section that follows the arch portion of the tunnel, within the design cross-sectional shape, and the section update means is configured to change the proportion occupied by the arc section through operation by the user.

[0033] The present invention also provides a blasting pattern generation method for generating a blasting pattern based on the excavation status of an excavated natural ground that has been excavated prior to a natural ground portion that is an excavation target including a tunnel face, the method comprising the steps of: a display step of displaying on a display means partition data in which a designed cross-sectional shape of the tunnel is partitioned into a plurality of partitions, in a state in which drilling data obtained by drilling a charge hole in the excavated natural ground and a plurality of basic pattern data showing blasting patterns with different ranges of corresponding strength indexes are stored in a storage means; a partition updating step of receiving an operation by a user and using a partition updating means to change the proportion of at least one of the partitions in the partition data to update the partition data; and a strength estimating means of calculating an estimated strength indicating the strength index of the partition in the natural ground portion that is the excavation target, in accordance with the drilling data. the strength estimation step, in which an extraction means selects for each section the basic pattern data corresponding to the estimated strength calculated in the strength estimation step and extracts the portion corresponding to the section from the basic pattern data; and the generation step, in which a generation means generates a new blasting pattern as composite pattern data by combining the portion corresponding to the section extracted from the basic pattern data, the extracted basic pattern data; the section data is configured to divide the design cross-sectional shape into sections so as to include within the design cross-sectional shape an arc section, which is the section of an approximately arc shape that follows the arch portion of the tunnel; and the section update step accepts an operation by the user to change the proportion occupied by the arc section, thereby updating the section data.

[0034] According to this invention, it is possible to generate a new blasting pattern that takes into account not only the variation in estimated strength in the ground portion to be excavated but also the excavation conditions of the excavated ground, thereby making it possible to generate a blasting pattern that is more suitable for the ground portion to be excavated.

[0035] Furthermore, the blasting pattern generation system and blasting pattern generation method can change the proportion of the arc section along the arch portion of the tunnel, so that both the proportion of the arc section and the proportion of at least the sections adjacent to the arc section can be changed simultaneously and easily.

[0036] As a result, the blasting pattern generation system and blasting pattern generation method can efficiently change the sizes of multiple sections in the section data, thereby efficiently generating blasting patterns suitable for the natural ground portion to be excavated.

[0037] In addition, in order to prevent the occurrence of "hits" and "over-excavation" for the multiple charge holes provided along the arch portion of the tunnel, the insertion angle (the angle of the drilling direction relative to the tunnel excavation direction) and spacing of the charge holes may be set to the same in all of the target ground portions to be excavated.

[0038] Even in such cases, the blasting pattern generation system and blasting pattern generation method can efficiently generate a blasting pattern that is suitable for the part of the ground to be excavated and that further reduces the occurrence of ``hits'' and ``over-excavation'' by using basic pattern data in which, for example, the desired insertion angle and spacing of the charge holes are associated with arc sections. [Effects of the Invention]

[0039] The present invention can provide a blasting pattern generation system and a blasting pattern generation method that can generate a blasting pattern suitable for the natural ground portion to be excavated. [Brief explanation of the drawings]

[0040] [Figure 1] FIG. 1 is a schematic diagram illustrating the configuration of a blasting pattern generation system. [Figure 2] FIG. 2 is a block diagram showing the internal configuration of the blasting pattern generation system. [Figure 3] FIG. 2 is an explanatory diagram illustrating the natural ground portion to be excavated and the excavated natural ground. [Figure 4] FIG. 2 is a schematic explanatory diagram illustrating an outline of block data. [Figure 5] FIG. 3 is a schematic explanatory diagram illustrating an outline of setting data. [Figure 6] Schematic explanatory diagram illustrating an outline of a soft blasting pattern. [Figure 7] FIG. 1 is a schematic diagram illustrating an outline of a hard blasting pattern. [Figure 8] Schematic diagram illustrating a standard blasting pattern. [Figure 9] FIG. 4 is a sequence diagram showing the processing operations in the blasting pattern generation system. [Figure 10] 10 is a flowchart showing the processing operation of a blasting pattern generation process. [Figure 11] 10A and 10B are explanatory diagrams for explaining an outline of a size change screen and a pattern setting screen. [Figure 12] 10 is a flowchart showing the processing operation of an estimated energy calculation process. [Figure 13] FIG. 10 is an explanatory diagram illustrating an outline of a calculation result screen and a synthesis result screen. [Figure 14] 10 is a flowchart showing the processing operation of a composite pattern data generation process. [Figure 15] FIG. 4 is an explanatory diagram illustrating a synthetic pattern data generation process. [Figure 16] FIG. 4 is an explanatory diagram illustrating composite pattern data. [Figure 17] FIG. 10 is a schematic explanatory diagram illustrating an outline of block data according to a modified example. [Figure 18] 10A and 10B are explanatory diagrams outlining a size change screen and a pattern setting screen in a modified example. [Figure 19] FIG. 10 is an explanatory diagram illustrating an outline of a synthesis result screen in a modified example. DETAILED DESCRIPTION OF THE INVENTION

[0041] An embodiment of the present invention will be described below with reference to the drawings. The blasting pattern generation system 1 of this embodiment is a system that generates a blasting pattern for excavating a natural ground portion Gx including a face F inside a tunnel T by blasting, based on drilling data 29 acquired from a tunnel boring machine 10. Such a blasting pattern generation system 1 will be described with reference to Figs. 1 to 8.

[0042] Note that Figure 1 shows a schematic diagram explaining the configuration of the blasting pattern generation system 1, Figure 2 shows a block diagram of the blasting pattern generation system 1, Figure 3 shows an explanatory diagram explaining the ground portion Gx to be excavated and the excavated ground Ga, Gb, Figure 4 shows a schematic diagram explaining the outline of the section data 28, and Figure 5 shows a schematic diagram explaining the outline of the setting data 30.

[0043] Furthermore, FIG. 6 shows a schematic diagram illustrating the soft pattern data 31, FIG. 7 shows a schematic diagram illustrating the hard pattern data 32, and FIG. 8 shows a schematic diagram illustrating the standard pattern data 33. Moreover, an arrow X in the drawing indicates the excavation direction of the tunnel T in plan view (hereinafter referred to as excavation direction X).

[0044] As shown in Figure 1, the blasting pattern generation system 1 of this embodiment is composed of a tunnel boring machine 10 that excavates the ground portion Gx to be excavated by blasting, and an information processing terminal 20 that is located in an administrative office or the like away from the tunnel T and is connected to the tunnel boring machine 10 via a communication line 2. The natural ground portion Gx to be excavated is defined as a range spaced apart from the face F of the tunnel T by the desired blasting advance length in the excavation direction X (see FIG. 3).

[0045] The tunnel boring machine 10 is a known boring machine, such as a drill jumbo, and has the functions of drilling a natural ground portion Gx including the face F of the tunnel T based on a blasting pattern, charging a charging hole (not shown) formed by the drilling, and excavating the natural ground portion Gx to be excavated by blasting, thereby advancing the tunnel T in the excavation direction X.

[0046] Specifically, as shown in Figure 1, the tunnel boring machine 10 comprises a boom 12 mounted on a self-propelled mobile carriage 11, a hole-boring unit 13 provided at the tip of the boom 12 for boring a hole in the ground portion Gx to be excavated, a drive mechanism unit (not shown) for driving each unit, and a control unit (not shown) for controlling the operation of each unit.

[0047] Furthermore, the tunnel boring machine 10 is equipped with various sensors, such as an angle sensor that detects the drilling direction, a hydraulic sensor that detects the hydraulic pressure of the hydraulic pump, and an advance / retraction amount detection sensor that detects the advance / retraction amount of the drill bit that drills the ground portion Gx to be excavated.

[0048] As shown in Figure 2, such a tunnel boring machine 10 is equipped with a line connection unit 14 that connects to the communication line 2 and a display unit 15 that displays various information to the operator, as a support device that supports blasting of the natural ground portion Gx to be excavated.

[0049] In addition, the tunnel boring machine 10 is equipped with an operation reception unit 16 that receives operator operations in response to various information displayed on the display unit 15, a memory unit 17 that stores various information, and an assistance control unit 18 that controls the operations of these units, as an assistance device that assists in blasting the ground portion Gx to be excavated.

[0050] More specifically, the line connection unit 14 is configured by, for example, a wireless LAN module or a wireless WAN module, and has the function of connecting to the communication line 2 and the function of receiving and transmitting various information via the communication line 2.

[0051] The display unit 15 is configured with, for example, a liquid crystal display or a touch panel display, and has the function of displaying various information in response to a control signal from the assistance control unit 18. The operation reception unit 16 is composed of a touch panel and various buttons that make up the display unit 15, and has the function of receiving input operations from an operator and the function of outputting information indicating the received input operations to the assistance control unit 18.

[0052] The storage unit 17 is configured by, for example, a hard disk or a nonvolatile memory, and has the function of writing and storing various information and the function of reading out various information. This memory unit 17 stores a support program that supports blasting of the natural ground portion Gx based on a blasting pattern, and drilling data 17a when drilling excavated natural ground Ga, Gb (see Figure 3) that was excavated before the natural ground portion Gx to be excavated. The drilling data 17a is stored for each of the excavated natural ground Ga and Gb.

[0053] For example, the memory unit 17 stores drilling data 17a when drilling the face Fa (see Figure 3) of the excavated ground Ga that was blasted one step before with respect to the face F in the ground portion Gx to be excavated, and drilling data 17a when drilling the face Fb (see Figure 3) of the excavated ground Gb that was blasted two steps before with respect to the face F in the ground portion Gx to be excavated.

[0054] This drilling data 17a is registered in association with the oil pressure, feed pressure, damping pressure, impact pressure, drilling speed, drilling length, drilling direction and reaction pressure calculated based on signals output by various sensors, drilling position information indicating the drilling position, face position information indicating the positions of the face faces Fa, Fb, and the drilling date and time when the excavated ground Ga, Gb was drilled.

[0055] The support control unit 18 is composed of hardware such as a CPU and memory, and software such as a control program, etc. The support control unit 18 has a processing function related to the exchange of various signals with the line connection unit 14, the display unit 15, the operation reception unit 16, and the storage unit 17, a function to control the operation of each of the above units, and a processing function related to the exchange of various information with the information processing terminal 20, which will be described later.

[0056] On the other hand, the information processing terminal 20 is a device that has the function of generating a blasting pattern suitable for the natural ground portion Gx to be excavated based on the drilling data 17a obtained from the tunnel boring machine 10 via the communication line 2, and the function of transmitting the blasting pattern to the tunnel boring machine 10.

[0057] As shown in Figure 2, this information processing terminal 20 includes a display unit 21 that displays various information to the user, an operation reception unit 22 that receives various operations from the user, a line connection unit 23 that connects to the communication line 2, a memory unit 24 that stores various information, and a terminal control unit 25 that controls the operations of these units.

[0058] Specifically, the display unit 21 is configured with, for example, a liquid crystal display, as shown in FIG. 1, and has the function of displaying various information in response to a control signal from the terminal control unit 25. As shown in FIG. 1, the operation reception unit 22 is composed of, for example, a keyboard 22a and a mouse 22b, and has the function of receiving input operations from a user and the function of outputting information indicating the received input operations to the terminal control unit 25.

[0059] The line connection unit 23 is configured by, for example, a wired LAN board or a wireless LAN module, and has a function of connecting to the communication line 2 and a function of transmitting and receiving various information via the communication line 2.

[0060] The storage unit 24 is configured by, for example, a hard disk or nonvolatile memory, and has the function of writing and storing various information, and the function of reading out various information. As shown in Figure 2, this memory unit 24 stores a support program (not shown) that supports the generation of blasting patterns, design cross-sectional shape data 26 that indicates the design shape of the interior cross section of tunnel T, and composite pattern data 27 that indicates a blasting pattern suitable for the natural ground portion Gx to be excavated.

[0061] Furthermore, the storage unit 24 stores partition data 28, drilling data 29, setting data 30, soft pattern data 31, hard pattern data 32, and standard pattern data 33 for generating composite pattern data 27.

[0062] More specifically, the section data 28 is section data set based on the design cross-sectional shape indicated by the design cross-sectional shape data 26, as shown in Figure 4, and is data that divides the interior of the interior contour line Lo, which indicates the outline of the interior cross section of the tunnel T, into seven sections, from the first section S1 to the seventh section S7.

[0063] The section data 28 is configured so that the proportion of each section within the hollow contour line Lo can be changed by changing the width and height of the third section S3 and the heights of the fourth section S4 and fifth section S5 through user operation.

[0064] In detail, the first section S1 of the section data 28 is the section located on the left side of the two sections surrounded by the first dividing line L1, which is parallel to the spring line Ls and located above the spring line Ls, the second dividing line L2, which is located on the tunnel center (not shown) above the first dividing line L1, and the interior contour line Lo, as shown in Figure 4.

[0065] As shown in FIG. 4, the second section S2 is the section located on the right side of the two sections surrounded by the first division line L1, the second division line L2, and the hollow outline Lo. As shown in Figure 4, the third section S3 is a section that is approximately rectangular in front view and is symmetrical with the first dividing line L1 as its lower side and the second dividing line L2 as its axis of symmetry, and is located so as to straddle the first section S1 and the second section S2.

[0066] As shown in Figure 4, the fourth section S4 is the section located on the left side of the two sections surrounded by the above-mentioned first dividing line L1, the third dividing line L3 parallel to and located below the spring line Ls, the fourth dividing line L4 located on the tunnel center (not shown) above the third dividing line L3, and the inner hollow contour line Lo. As shown in Figure 4, the fifth section S5 is the section located on the right side of the two sections surrounded by the first division line L1, the third division line L3, the fourth division line L4 and the inner hollow contour line Lo.

[0067] As shown in Figure 4, the sixth section S6 is the section located on the left side of the two sections surrounded by the above-mentioned third dividing line L3, the fifth dividing line L5 located on the tunnel center (not shown) below the third dividing line L3, and the inner hollow contour line Lo. As shown in FIG. 4, the seventh section S7 is the section located on the right side of the two sections surrounded by the third division line L3, the fifth division line L5, and the hollow outline Lo.

[0068] Furthermore, the drilling data 29 is the same data as the drilling data 17a of the tunnel boring machine 10, and is acquired from the tunnel boring machine 10 each time the natural ground portion Gx to be excavated is excavated. As described above, this drilling data 29 is registered in association with oil pressure, feed pressure, damping pressure, impact pressure, drilling speed, drilling length, drilling direction and reaction pressure, as well as drilling position information indicating the drilling position, face position information indicating the positions of the face faces Fa and Fb, and the drilling date and time when the excavated ground Ga and Gb were drilled.

[0069] As shown in Figure 5, the setting data 30 has registered therein an estimated energy value column 301 in which the range of estimated energy values ​​required for drilling the ground portion Gx to be excavated is registered, a drilling length column 302 in which the drilling length, which is the drilling depth appropriate for the range of estimated energy values, is registered, and a blasting pattern column 303 in which blasting patterns appropriate for the range of estimated energy values ​​are registered, all of which are associated with each section.

[0070] The estimated energy value, which will be described in detail later, is the drilling energy value required to drill holes in the ground portion Gx to be excavated, calculated based on the drilling data 29 of the excavated ground Ga, Gb that were excavated before the ground portion Gx to be excavated. A smaller estimated energy value indicates that the ground portion Gx to be excavated tends to be softer, and a higher estimated energy value indicates that the ground portion Gx to be excavated tends to be harder.

[0071] For example, in the setting data 30, as shown in Figure 5, "less than 180" is registered in the estimated energy value column 301 for the first section S1, "1.5 m" is registered in the drilling length column 302, and "soft blasting pattern" is registered in the blasting pattern column 303.

[0072] In addition, the soft pattern data 31, hard pattern data 32 and standard pattern data 33 are basic pattern data indicating blasting patterns designed in advance based on the design shape of the internal cross section registered in the design cross section shape data 26, and are each designed as blasting patterns suitable for the natural ground portion Gx having different drilling energy values ​​required to drill the charge holes.

[0073] Specifically, the soft pattern data 31, hard pattern data 32 and standard pattern data 33 are designed to suppress the occurrence of "hits" and "over-excavation" when the ground portion Gx of the excavation target, including the face F, is excavated by blasting, and to ensure good crushing of the "mud."

[0074] In the soft pattern data 31, hard pattern data 32 and standard pattern data 33, a plurality of drilling positions (black circles in the drawing) are registered as shown. Furthermore, although detailed illustrations are omitted, the hard pattern data 32, hard pattern data 32 and standard pattern data 33 register, for each drilling position, drilling position information indicating the drilling position, drilling direction, drilling length, number of detonator stages, and the amount of charge to be loaded into the charge hole formed by drilling.

[0075] More specifically, as shown in FIG. 6, the soft blasting pattern data 31 is designed as a soft blasting pattern suitable for soft natural ground portions Gx where the drilling energy value required for drilling is relatively small. As shown in FIG. 7, the hard pattern data 32 is designed as a hard blasting pattern suitable for hard natural ground portions Gx that require a relatively large drilling energy value for drilling.

[0076] As shown in Figure 8, the standard pattern data 33 is designed as a standard blasting pattern suitable for a natural ground portion Gx in which the drilling energy value required for drilling is greater than that of a soft natural ground portion Gx and less than that of a hard natural ground portion Gx.

[0077] The terminal control unit 25 is made up of hardware such as a CPU, memory, etc., and software such as a control program, etc. The terminal control unit 25 has a processing function related to the exchange of various signals with the display unit 21, operation reception unit 22, line connection unit 23, and memory unit 24, a function to control the operation of each of the above-mentioned units, and a processing function related to the exchange of various information with the assistance control unit 18 of the tunnel boring machine 10.

[0078] Next, the processing operation for generating a blasting pattern suitable for the natural ground portion Gx to be excavated in the blasting pattern generation system 1 configured as described above will be described with reference to Figs. Note that Figure 9 shows a sequence diagram of the processing operations in the blasting pattern generation system 1, Figure 10 shows a flowchart of the blasting pattern generation process, and Figure 11 shows an explanatory diagram outlining the size change screen 200 and pattern setting screen 210.

[0079] Furthermore, FIG. 12 shows a flowchart of the estimated energy calculation process, FIG. 13 shows an explanatory diagram outlining the calculation result screen 220 and the synthesis result screen 230, and FIG. 14 shows a flowchart of the synthesis pattern data generation process. In addition, FIG. 15 shows an explanatory diagram for explaining the process of generating the composite pattern data 27, and FIG. 16 shows an explanatory diagram for explaining the composite pattern data 27.

[0080] First, the excavated ground Ga between the face Fa and face F in Figure 3 is set as the ground Ga to be excavated, and in order to drill the face Fa in the ground Ga to be excavated, the operator riding in the tunnel boring machine 10 operates the operation reception unit 16 to request the transmission of a blasting pattern suitable for the ground Ga to be excavated.

[0081] When receiving an operation by the operator to request a blasting pattern, the support control unit 18 of the tunnel boring machine 10 transmits request information requesting transmission of a blasting pattern to the information processing terminal 20, as shown in FIG. 9 (step S101).

[0082] When the request information is obtained from the tunnel boring machine 10, the terminal control unit 25 of the information processing terminal 20 accepts the user's operation and transmits the blasting pattern read from the memory unit 24 to the tunnel boring machine 10 via the communication line 2, as shown in Figure 9 (step S102).

[0083] At this time, if the ground mass Ga of the excavation target is the first excavation target, the terminal control unit 25 transmits, for example, standard pattern data 33, and if the ground mass Ga of the excavation target is the second or subsequent excavation target, it transmits composite pattern data 27 generated in step S109 described below.

[0084] When the blasting pattern is acquired from the information processing terminal 20, the support control unit 18 of the tunnel boring machine 10 stores the acquired blasting pattern in the memory unit 17 and displays the acquired blasting pattern on the display unit 15, as shown in Figure 9 (step S103).

[0085] At this time, the operator operates the tunnel boring machine 10 based on the blasting pattern displayed on the display unit 15, and drills the ground Ga to be excavated in the desired direction and length to form a charging hole.

[0086] When drilling of the ground Ga of the excavation target, including the face Fa, begins, the support control unit 18 of the tunnel boring machine 10 generates drilling data 17a that associates the oil pressure, feed pressure, damping pressure, impact pressure, drilling speed, drilling length, drilling direction and reaction pressure calculated based on the signals output by various sensors with drilling position information indicating the drilling position, face position information indicating the position of the face Fa, and the drilling date and time when the ground Ga of the excavation target was drilled, and stores this in the memory unit 17 (step S105).

[0087] Meanwhile, in an administrative office or the like away from the tunnel T, a user using the information processing terminal 20 operates the information processing terminal 20 to begin generating a blasting pattern suitable for the natural ground portion Gx including the face F that will be the new excavation target after excavating the natural ground Ga, which is the current excavation target.

[0088] Specifically, when a processing program that starts generating a blasting pattern is executed by a user, the terminal control unit 25 of the information processing terminal 20 transmits request information to the tunnel boring machine 10 via the communication line 2, requesting the transmission of drilling data 17a before the natural ground portion Gx to be excavated, as shown in Figure 9 (step S106).

[0089] Upon receiving the request information from the information processing terminal 20, the support control unit 18 of the tunnel boring machine 10 transmits the drilling data 17a stored in the memory unit 17 to the information processing terminal 20 via the communication line 2, as shown in Figure 9 (step S107).

[0090] In this case, if there is only one drilling data 17a in the memory unit 17, the support control unit 18 transmits that drilling data 17a, and if there are two or more drilling data 17a in the memory unit 17, it transmits the drilling data 17a with the most recent date and time and the drilling data 17a with the next most recent date and time.

[0091] In other words, if one pile of ground has been excavated, the support control unit 18 transmits drilling data 17a for that pile of ground, and if two or more piles of ground have been excavated, it transmits drilling data 17a for the two piles of ground that were most recently excavated.

[0092] On the other hand, when the drilling data 17a is acquired from the tunnel boring machine 10, the terminal control unit 25 of the information processing terminal 20 stores the acquired drilling data 17a in the memory unit 24 as drilling data 29, as shown in FIG. 9 (step S108). Furthermore, the terminal control unit 25 starts a blasting pattern generation process for generating a blasting pattern suitable for the natural ground portion Gx (see FIG. 3) that is the excavation target, based on the stored hole-drilling data 29 (step S109).

[0093] When the blasting pattern generation process is started, the terminal control unit 25 of the information processing terminal 20 reads the section data 28 from the memory unit 24, as shown in Figure 10, and displays a size change screen 200 on the display unit 21 for changing the size of each section of the section data 28 (step S121).

[0094] This resizing screen 200 displays, for example, as shown in Figure 11(a), a partition data display field 201 that displays partition data 28, a numerical input field 202 for changing the proportion of each partition that occupies the interior of the hollow contour line Lo, and a drawing button 203 for redrawing the partition data 28 in the partition data display field 201.

[0095] Furthermore, the resize screen 200 displays a pattern setting button 204 that displays the pattern setting screen 210 described below, a save button 205 that updates the section data 28 based on the numerical value in the numerical input field 202, and a back button 206 for returning to the previous screen (not shown).

[0096] In addition, the numerical input field 202 displays a width input field (symbol omitted) for inputting the widthwise length W1 from the tunnel center (not shown) to the right and left sides of the third section S3, and a first height input field (symbol omitted) for inputting the vertical length H1 from the spring line Ls to the top side of the third section S3.

[0097] In addition, the numerical input field 202 displays a second height input field (symbol omitted) for inputting the vertical length H2 from the spring line Ls to the first dividing line L1, and a third height input field (symbol omitted) for inputting the vertical length H3 from the spring line Ls to the third dividing line L3.

[0098] With this size change screen 200 displayed on the display unit 21, the user changes the value in the numerical input field 202 to the desired value, then presses the drawing button 203 to change the size of each section while checking the size of each section in the section data display field 201.

[0099] Furthermore, when the pattern setting button 204 is pressed on the size change screen 200, the pattern setting screen 210 displayed on the display unit 21 by the terminal control unit 25 is a screen for accepting user operations to update the setting data 30.

[0100] This pattern setting screen 210 displays, for example as shown in Figure 11(b), a selection tab (numeral omitted) for selecting one of the first section S1 to the seventh section S7, and a setting data display field 211 for displaying the setting data 30 corresponding to the section selected on the selection tab.

[0101] Furthermore, the pattern setting screen 210 displays a section column 212 indicating the section position of the section data 28, a save button 213 for updating the setting data 30 with the changes, and a back button 214 for returning to the size change screen 200.

[0102] Specifically, the setting data display field 211 displays the range of estimated energy values ​​registered in the setting data 30 and the blasting patterns suitable for the range of estimated energy values ​​in association with each other. For example, as shown in FIG. 11(b), the setting data display field 211 displays the "soft blasting pattern" in association with the range of estimated energy values ​​"less than 180".

[0103] The pattern setting screen 210 is configured so that the range of estimated energy values ​​in the setting data display field 211 and the blasting pattern suited to the range of estimated energy values ​​can be changed by user operation. At this time, the user can arbitrarily select and press the range of estimated energy values ​​and blasting patterns to change the range of estimated energy values ​​and blasting patterns.

[0104] Returning to step S121 in FIG. 10, when the resize screen 200 is displayed on the display unit 21, the terminal control unit 25 determines whether the user who changed the size of each section according to the instructions on the resize screen 200 pressed the save button 205 to update the section data 28 (step S122).

[0105] If the user presses the save button 205 on the size change screen 200 (step S122: Yes), the terminal control unit 25 updates the partition data 28 in the memory unit 24 with the size of each partition based on the numerical value in the numerical input field 202 (step S123), and then proceeds to step S124.

[0106] On the other hand, if the pattern setting button 204 is pressed instead of the save button 205 (step S122: No), the terminal control unit 25 determines whether the save button 213 on the pattern setting screen 210 has been pressed by the user who changed the estimated energy value range or blasting pattern in the setting data display field 211 (step S124).

[0107] If the user presses the back button 214 on the pattern setting screen 210 (step S124: No), the terminal control unit 25 of the information processing terminal 20 advances the process to step S126 and displays the size change screen 200 on the display unit 21.

[0108] On the other hand, if the user presses the save button 213 on the pattern setting screen 210 (step S124: Yes), the terminal control unit 25 of the information processing terminal 20 updates the setting data 30 with the estimated energy value range and blasting pattern in the setting data display field 211 (step S125).

[0109] Thereafter, the terminal control unit 25 starts an estimated energy calculation process for calculating an estimated value of drilling energy required for drilling the natural ground portion Gx to be excavated based on the drilling data 29 (step S126).

[0110] When the estimated energy calculation process is started, the terminal control unit 25 of the information processing terminal 20 calculates the drilling energy value for each charging hole when drilling the excavated ground Ga, Gb based on the drilling data 29 stored in the memory unit 24, as shown in Figure 12 (step S141).

[0111] Here, the drilling energy value is calculated by taking the portion of the charge hole excluding both ends in the drilling direction as the calculation target portion, and calculating the average value of the energy required to drill the calculation target portion based on, for example, the oil pressure, drilling speed, and reaction pressure of the drilling data 29.

[0112] Specifically, the terminal control unit 25 calculates the drilling energy value for each charging hole based on the drilling data 29 of the excavated natural ground Ga that was excavated immediately before the natural ground portion Gx to be excavated. Furthermore, the terminal control unit 25 calculates the drilling energy value for each charging hole based on the drilling data 29 of the excavated natural ground Gb that was excavated two holes before the natural ground portion Gx to be excavated. In addition, when there is only one drilling data 29, the terminal control unit 25 calculates the drilling energy value for each charging hole for the drilling data 29.

[0113] Then, the terminal control unit 25 superimposes the position of the charging hole corresponding to the drilling energy value calculated in step S141 with the section data 28, and determines whether there is a section where the variation in the drilling energy value is greater than a predetermined threshold (step S142).

[0114] At this time, the terminal control unit 25 determines whether there are any sections in the excavated ground Ga that was excavated one section before the ground portion Gx to be excavated, and the excavated ground Gb that was excavated two sections before the ground portion Gx to be excavated, in which the variation in drilling energy values ​​is greater than a predetermined threshold value. If there is no section in which the variation in drilling energy value is greater than the predetermined threshold (step S142: No), the terminal control unit 25 advances the process to step S144, which will be described later.

[0115] On the other hand, if there is a section where the variation in drilling energy values ​​is greater than a predetermined threshold (step S142: Yes), the terminal control unit 25 performs processing to prevent the drilling energy values ​​that are noise from being used in subsequent processing, as there is a risk that drilling energy values ​​with low calculation accuracy caused by unintentional malfunctions, etc., may be included as noise.

[0116] Specifically, the terminal control unit 25 calculates the standard deviation σ based on all the drilling energy values ​​calculated in step S141, and deletes the charging holes corresponding to drilling energy values ​​that exceed the dispersion range of ±2σ, which is twice the standard deviation σ (step S143).

[0117] Then, as shown in Figure 12, the terminal control unit 25 sets the count value n indicating the nth section to n = 1 (step S144), and calculates the first average drilling energy value of the nth section in the excavated ground Ga that was excavated one section before the ground portion Gx to be excavated, and the second average drilling energy value of the nth section in the excavated ground Gb that was excavated two sections before the ground portion Gx to be excavated (step S145).

[0118] Specifically, the terminal control unit 25 extracts the charging holes contained within the nth section in the previously excavated ground mass Ga, calculates the average value of the drilling energy values ​​of the extracted charging holes, and temporarily stores it as the first average drilling energy value.

[0119] Furthermore, the terminal control unit 25 extracts the charging holes included in the nth section in the excavated ground Gb excavated two sections ago, calculates the average value of the drilling energy values ​​of the extracted charging holes, and temporarily stores it as a second average drilling energy value. After calculating the first average drilling energy value and the second average drilling energy value, the terminal control unit 25 calculates the estimated energy value required for drilling the nth section in the natural ground portion Gx to be excavated based on the calculated first average drilling energy value and second average drilling energy value (step S146).

[0120] Specifically, the terminal control unit 25 calculates the rate of change of the first average drilling energy value relative to the second average drilling energy value based on the difference between the second average drilling energy value and the first average drilling energy value.

[0121] Furthermore, the terminal control unit 25 calculates an estimated energy value based on the rate of change of the first average drilling energy value relative to the second average drilling energy value, and calculates an estimated energy value for the energy value required to drill the nth section in the natural ground portion Gx to be excavated.

[0122] It should be noted that, in step S141, if there is only one piece of drilling data 29, the terminal control unit 25 calculates only the first average drilling energy value, and sets the calculated first average drilling energy value as the estimated energy value.

[0123] After calculating the estimated energy value, the terminal control unit 25 updates the current count value n by adding "1" to the count value n (step S147), and then determines whether the count value n exceeds the number of partitions, "7" (step S148).

[0124] If the current count value n is equal to or less than "7" (step S148: No), the terminal control unit 25 returns the process to step S145 and repeats the processes from step S145 to step S148 until the count value n exceeds "7".

[0125] On the other hand, if the current count value n exceeds "7" (step S148: Yes), the terminal control unit 25 determines that the calculation of the estimated energy values ​​from the first section S1 to the seventh section S7 has been completed, terminates the estimated energy calculation process, and then proceeds to step S127 in Figure 10.

[0126] At this time, the terminal control unit 25 displays on the display unit 21 a calculation result screen 220 showing the calculation results of the estimated energy value for each section. On this calculation result screen 220, as shown in FIG. 13(a), for example, an energy distribution diagram 221 is displayed in which the estimated energy values ​​calculated in step S146 are superimposed on each section indicated by the section data 28, and a save button 222 for saving the energy distribution diagram 221 and a back button 223 for returning to the previous screen (not shown) are also displayed.

[0127] Returning to step S126 in Figure 10 and completing the estimated energy calculation process, the terminal control unit 25 starts a composite pattern data generation process to generate composite pattern data 27 suitable for the natural ground portion Gx to be excavated based on the estimated energy value of each section calculated in step S126 (step S127).

[0128] Specifically, when the composite pattern data generation process starts, the terminal control unit 25 sets the count value n indicating the nth section to n=1 (step S161), as shown in FIG. 14, and determines whether the estimated energy value in the nth section is less than the lower threshold, greater than or equal to the lower threshold and less than the upper threshold, or greater than or equal to the upper threshold (step S162).

[0129] The lower limit threshold is set to the smallest value among the estimated energy thresholds registered for the nth section in the setting data 30. For example, in the case of the first section S1, the lower limit threshold is set to "180" as shown in FIG.

[0130] On the other hand, the upper limit threshold is set to the largest value among the estimated energy thresholds registered for the nth section in the setting data 30. For example, in the case of the first section S1, the upper limit threshold is set to "280" as shown in FIG.

[0131] If the estimated energy value is less than the lower threshold value (step S162:1), the terminal control unit 25 reads the soft pattern data 31 from the memory unit 24 as basic pattern data corresponding to the estimated energy value, and reads the drilling length corresponding to the estimated energy value from the setting data 30 (step S163).

[0132] Also, if the estimated energy value is greater than or equal to the lower threshold and less than the upper threshold (step S162:2), the terminal control unit 25 reads the standard pattern data 33 from the memory unit 24 as basic pattern data corresponding to the estimated energy value, and reads the drilling length corresponding to the estimated energy value from the setting data 30 (step S164).

[0133] Also, if the estimated energy value is greater than or equal to the upper threshold value (step S162:3), the terminal control unit 25 reads the hard pattern data 32 from the memory unit 24 as basic pattern data corresponding to the estimated energy value, and reads the drilling length corresponding to the estimated energy value from the setting data 30 (step S165).

[0134] When either the soft pattern data 31, the standard pattern data 33 or the hard pattern data 32 is read, the terminal control unit 25 extracts the part corresponding to the nth section from the blasting pattern indicated by the read basic pattern data, as shown in Figure 14, and then temporarily stores it as extracted data E1 (see Figure 15) (step S166).

[0135] At this time, the terminal control unit 25 extracts drilling position information indicating the drilling position corresponding to the nth section, and stores the drilling length read out together with the basic pattern data in association with the extracted data E1 as the drilling length in the nth section.

[0136] Thereafter, the terminal control unit 25 adds "1" to the current count value n to update the count value n (step S167), and then determines whether the count value n exceeds "7", which is the number of partitions (step S168).

[0137] If the current count value n is equal to or less than "7", which is the number of partitions (step S168: No), the terminal control unit 25 returns the process to step S162 and repeats the processes from step S162 to step S168 until the count value n exceeds "7".

[0138] On the other hand, if the current count value n exceeds the number of sections, which is "7" (step S168: Yes), the terminal control unit 25 combines the blasting patterns for each section extracted in step S166 to generate a new blasting pattern suitable for the natural ground portion Gx to be excavated (step S169).

[0139] Specifically, as shown in Figure 15, the terminal control unit 25 combines extracted data E1 corresponding to the first section S1, extracted data E2 corresponding to the second section S2, extracted data E3 corresponding to the third section S3, extracted data E4 corresponding to the fourth section S4, extracted data E5 corresponding to the fifth section S5, extracted data E6 corresponding to the sixth section S6, and extracted data E7 corresponding to the seventh section S7 so as to overlap them in the excavation direction X, thereby generating a new blasting pattern (see Figure 16).

[0140] For example, if the soft pattern data 31 is selected as the basic pattern data for the first section S1, the terminal control unit 25 extracts the part of the soft pattern data 31 corresponding to the first section S1 in the above-mentioned step S166 and sets it as extracted data E1 (see Figure 15).

[0141] Similarly, when the terminal control unit 25 selects soft pattern data 31 as the basic pattern data for the second section S2, it extracts the portion of the soft pattern data 31 corresponding to the second section S2 and sets it as extracted data E2, and when it selects standard pattern data 33 as the basic pattern data for the third section S3, it extracts the portion of the standard pattern data 33 corresponding to the third section S3 and sets it as extracted data E3 (see Figure 15).

[0142] Furthermore, when the terminal control unit 25 selects the standard pattern data 33 as the basic pattern data for the fourth section S4, it extracts the portion of the standard pattern data 33 corresponding to the fourth section S4 and sets it as extracted data E4, and when the terminal control unit 25 selects the standard pattern data 33 as the basic pattern data for the fifth section S5, it extracts the portion of the standard pattern data 33 corresponding to the fifth section S5 and sets it as extracted data E5 (see Figure 15).

[0143] In addition, when the terminal control unit 25 selects hard pattern data 32 as the basic pattern data for the sixth section S6, it extracts the portion of the hard pattern data 32 corresponding to the sixth section S6 and sets it as extracted data E6, and when it selects standard pattern data 33 as the basic pattern data for the seventh section S7, it extracts the portion of the standard pattern data 33 corresponding to the seventh section S7 and sets it as extracted data E7 (see Figure 15).

[0144] Then, in the above-mentioned step S169, the terminal control unit 25 combines the extracted data E1 and extracted data E2 extracted from the soft pattern data 31, the extracted data E6 extracted from the hard pattern data 32, and the extracted data E3, extracted data E4, extracted data E5 and extracted data E6 extracted from the standard pattern data 33 to generate a new blasting pattern as shown in Figure 16.

[0145] Returning to Figure 14, when a new blasting pattern is generated, the terminal control unit 25 stores the generated new blasting pattern in the memory unit 24 as composite pattern data 27 (step S170), then displays a composite result screen 230 showing the composite pattern data 27 on the display unit 21, and proceeds to step S128 in Figure 10.

[0146] As shown in Figure 13(b), this synthesis result screen 230 displays a pattern display field 231 in which the new blasting pattern indicated by the synthesis pattern data 27 is displayed, a save button 232 for saving the modifications to the synthesis pattern data 27 described below, a print button 233 for printing the new blasting pattern, and a close button 234 for closing the screen. The synthesis result screen 230 is configured so that the blasting pattern within a section can be changed by selecting and pressing each section of the blasting pattern.

[0147] When the synthesis result screen 230 is displayed, the terminal control unit 25 determines whether or not an operation by a user who desires to modify the synthesis pattern data 27 has been accepted, as shown in FIG. 10 (step S128). When a user's operation desiring to correct the composite pattern data 27 is accepted (step S128: Yes), the terminal control unit 25 starts a composite pattern data correction process (step S129).

[0148] For example, when a user selects and presses one of the sections displayed on the synthesis result screen 230, the terminal control unit 25 displays on the display unit 21 a screen (not shown) for correcting the blasting pattern of the selected section. At this time, the user follows the instructions on the screen to change the blasting pattern of the selected section to another blasting pattern or to correct the drilling position.

[0149] Thereafter, the terminal control unit 25 generates a new blasting pattern that reflects the correction content, and then updates the pattern display field 231 on the synthesis result screen 230. Then, when the user presses the save button 232, the terminal control unit 25 updates the composite pattern data 27 with a new blasting pattern that reflects the corrections, and then terminates the blasting pattern generation process in step S109 of Figure 9.

[0150] On the other hand, in step S128, if the close button 234 on the synthesis result screen 230 is pressed without accepting an operation from the user wishing to modify the synthesis pattern data 27 (step S128: No), the terminal control unit 25 terminates the blasting pattern generation process in step S109 of Figure 9.

[0151] The composite pattern data 27 thus generated is transmitted to the tunnel boring machine 10 in step S102 of FIG. 9 as a blasting pattern suited to the natural ground portion Gx to be excavated. In this way, the blasting pattern generation system 1 repeats steps S101 to S109 in Figure 9 to generate a blasting pattern suitable for the ground portion Gx to be excavated and transmits it to the tunnel boring machine 10, thereby assisting in the excavation of the ground portion Gx by blasting.

[0152] As described above, the blasting pattern generation system 1 of this embodiment is a system that generates a blasting pattern based on the excavation conditions of the excavated ground Ga, Gb that was excavated before the ground portion Gx, which is the excavation target including the face F of the tunnel T.

[0153] This blasting pattern generation system 1 is equipped with a memory unit 24 that stores drilling data 29 obtained by drilling charge holes in excavated ground Ga and Gb, and multiple basic pattern data (soft pattern data 31, hard pattern data 32, and standard pattern data 33) that indicate blasting patterns with different ranges of corresponding drilling energy values.

[0154] Furthermore, the blasting pattern generation system 1 is equipped with a display means (display unit 21) for displaying section data 28 in which the design cross-sectional shape of the tunnel T is divided into a plurality of sections, and a section update means (operation reception unit 22 and terminal control unit 25) for accepting operations by the user and updating the section data 28 by changing the proportion occupied by at least one section of the section data 28.

[0155] In addition, the blasting pattern generation system 1 is equipped with an intensity estimation means (terminal control unit 25) that calculates an estimated energy value of a section in the natural ground portion Gx to be excavated based on drilling data 29, and an extraction means (terminal control unit 25) that selects basic pattern data corresponding to the estimated energy value calculated by the intensity estimation means for each section and extracts a portion corresponding to the section from the basic pattern data.

[0156] The blasting pattern generation system 1 is provided with a generation means (terminal control unit 25) for generating a new blasting pattern as composite pattern data 27 by combining the parts corresponding to the sections extracted from the basic pattern data.

[0157] In addition, the blasting pattern generation method of this embodiment is a method of generating a blasting pattern based on the excavation conditions of the excavated ground Ga, Gb that was excavated before the ground portion Gx, which is the excavation target including the face F of the tunnel T.

[0158] This blasting pattern generation method includes a display step in which, after storing drilling data 29 obtained by drilling charge holes in excavated ground Ga and Gb, and a plurality of basic pattern data (soft pattern data 31, hard pattern data 32, and standard pattern data 33) showing blasting patterns with different ranges of corresponding drilling energy values ​​in a memory unit 24, the display step displays on a display means section data 28 in which the designed cross-sectional shape of the tunnel T is divided into a plurality of sections.

[0159] Furthermore, the blasting pattern generation method carries out a section updating step in which the section updating means updates the section data 28 by changing the proportion of at least one section in the section data 28 in response to an operation by the user.

[0160] In addition, the blasting pattern generation method includes an intensity estimation process in which an intensity estimation means calculates an estimated energy value of a section in the natural ground portion Gx to be excavated based on drilling data 29, and an extraction process in which an extraction means selects basic pattern data for each section corresponding to the estimated energy value calculated in the intensity estimation process and extracts a portion corresponding to the section from the basic pattern data.

[0161] The blasting pattern generating method then performs a generating step in which a generating means generates a new blasting pattern as composite pattern data 27 by combining the parts corresponding to the sections extracted from the basic pattern data.

[0162] According to this configuration, the estimated energy distribution in the natural ground portion Gx to be excavated can be calculated by calculating the estimated energy value of each section indicated by the section data 28 based on the drilling data 29 of the excavated natural ground Ga, Gb. Furthermore, by synthesizing the blasting patterns of each section extracted based on the estimated energy values, the blasting pattern generation system 1 can generate a new blasting pattern that takes into account the variation in the estimated energy values ​​in the natural ground portion Gx to be excavated.

[0163] Here, since the blasting pattern generation system 1 can change the proportion occupied by at least one section of the section data 28, the number of charge holes contained in each section in the excavated ground Ga, Gb can easily be varied depending on, for example, the occurrence of ``hits'' or ``over-excavation'' in the excavated ground Ga, Gb, or the crushing status of ``mud.''

[0164] As a result, the blasting pattern generation system 1 and the blasting pattern generation method can generate a new blasting pattern that takes into account not only the variation in estimated energy values ​​in the ground portion Gx to be excavated, but also the excavation conditions of the excavated ground Ga, Gb. Therefore, the blasting pattern generation system 1 and the blasting pattern generation method can generate a blasting pattern that is more suitable for the natural ground portion Gx to be excavated.

[0165] In addition, the blasting pattern generation system 1 and the blasting pattern generation method can reduce the occurrence of "hits" and "over-excavation" when excavating the target ground portion Gx by blasting, and can also improve the crushing state of the "mud," thereby improving the excavation efficiency of the tunnel T.

[0166] The section data 28 is configured to divide the design cross-sectional shape into sections so as to include a third section S3, which is a substantially rectangular section, within the design cross-sectional shape. The section update means (the operation reception unit 22 and the terminal control unit 25) is configured to change the proportion of the third section S3 in response to a user operation. According to this configuration, by simply changing the height and / or width of the third section S3 through user operation, it is possible to simultaneously and easily change both the proportion occupied by the third section S3 and the proportion occupied by at least the first section S1 and the second section S2 adjacent to the third section S3.

[0167] This allows the blasting pattern generation system 1 to efficiently change the sizes of the multiple sections in the section data 28, and therefore to efficiently generate a blasting pattern suitable for the natural ground portion Gx to be excavated.

[0168] The generating means (terminal control unit 25) is configured to generate, in association with the composite pattern data 27, a drilling length corresponding to the estimated energy value for each section calculated by the strength estimating means. With this configuration, the drilling length of each section can be optimized according to the estimated energy value, so that the unevenness of the face F after blasting can be reduced and smoothed out.

[0169] In addition, the blasting pattern generation system 1 is equipped with a pattern change means (operation reception unit 22 and terminal control unit 25) that accepts user operation to change the blasting pattern for each section in the composite pattern data 27 generated by the generation means to a different blasting pattern.

[0170] According to this configuration, the user can modify the blasting pattern of some sections in the composite pattern data 27, for example, depending on the occurrence of ``hits'' or ``over-excavation'' in the excavated ground Ga, Gb, or the crushing status of ``mud.'' This allows the blasting pattern generation system 1 to utilize the user's experience to generate a blasting pattern that reduces the occurrence of "hits" and "excessive excavation."

[0171] In addition, the blasting pattern generation system 1 is equipped with a correspondence change means (operation reception unit 22 and terminal control unit 25) that changes the correspondence between the estimated energy value calculated by the intensity estimation means and the basic pattern data selected by the extraction means by accepting user operations.

[0172] According to this configuration, the basic pattern data (soft pattern data 31, hard pattern data 32, standard pattern data 33) selected based on the estimated energy value can be changed by user operation, so that the composite pattern data 27 generated based on the estimated energy value can be made different for each tunnel T, for example. Therefore, the blasting pattern generation system 1 can generate a suitable blasting pattern for each tunnel T.

[0173] In addition, the strength estimation means (terminal control unit 25) is configured to calculate the drilling energy value for each charging hole based on the drilling data 29, and to calculate the estimated energy value for each section using the effective drilling energy value from all the calculated drilling energy values.

[0174] This configuration improves the accuracy of the estimated energy value calculated for each section, allowing the selection of suitable basic pattern data for each section, enabling the blasting pattern generation system 1 to generate a blasting pattern suitable for the natural ground portion Gx to be excavated.

[0175] In addition, the memory unit 24 stores at least first drilling data, which is drilling data 29 in the excavated ground Ga that is one step before the ground portion Gx to be excavated, and second drilling data, which is drilling data 29 in the excavated ground Gb that is two steps before the ground portion Gx to be excavated.

[0176] The strength estimation means (terminal control unit 25) is configured to calculate a first average drilling energy value for each section based on the first drilling data, and a second average drilling energy value for each section based on the second drilling data, and to calculate an estimated energy value for each section based on the rate of change of the first average drilling energy value relative to the second average drilling energy value.

[0177] According to this configuration, the estimated energy value of each section in the natural ground portion Gx to be excavated can be calculated based on the transition of the average value of the drilling energy value, thereby improving the calculation accuracy of the estimated energy value. This allows the blasting pattern generation system 1 to select more suitable basic pattern data for each section, and therefore to generate a blasting pattern that is more suitable for the natural ground portion Gx to be excavated.

[0178] The blasting pattern generation system 1 also includes a data acquisition means (terminal control unit 25) for acquiring drilling data 29 from a tunnel boring machine 10 that drills the ground portion Gx to be excavated, and an output means (terminal control unit 25) for outputting the composite pattern data 27 generated by the generation means to the tunnel boring machine 10.

[0179] According to this configuration, each time a hole is drilled in the ground portion Gx to be excavated, a blasting pattern corresponding to the estimated energy distribution of the next ground portion to be excavated can be generated and output to the tunnel boring machine 10, thereby improving the excavation efficiency of the tunnel T.

[0180] Next, a modification of the above-described embodiment will be described with reference to FIGS. Note that Figure 17 shows a schematic diagram outlining the block data 28A in the modified example, Figure 18 shows a schematic diagram outlining the size change screen 200A and pattern setting screen 210A in the modified example, and Figure 19 shows a schematic diagram outlining the synthesis result screen 240 in the modified example. Furthermore, the same components as those in the above-described embodiment are denoted by the same reference numerals, and detailed description thereof will be omitted.

[0181] First, the blasting pattern generation system 1 of the modified example is composed of a tunnel boring machine 10 and an information processing terminal 20, similar to the embodiment described above. In this modified example, the storage unit 24 of the information processing terminal 20 stores section data 28A and setting data (not shown) that are different from the section data 28 and setting data 30 in the above-described embodiment.

[0182] Specifically, the modified section data 28A is data in which the interior of the inner contour line Lo of the tunnel T is divided into eight sections, from the first section S11 to the eighth section S18, as shown in FIG. The section data 28A is configured so that the proportion of each section within the hollow contour line Lo can be changed by changing the radial length (distance ΔR described later) of the first section S11 and the second section S12, the width and height (widthwise length W1 and distance ΔR described later) of the third section S13, and the height (vertical lengths H2, H3 described later) of the sixth section S16 through user operation.

[0183] In detail, as shown in Figure 17, the first section S11 of the section data 28A is the section located on the left side of two sections divided by a first dividing line L11 that is parallel to the spring line Ls and located above the spring line Ls, a second dividing line L12 that is approximately arc-shaped similar to the arch portion above the first dividing line L11 on the inner hollow contour line Lo and located more inward than the inner hollow contour line Lo, and a third dividing line L13 that is located on the tunnel center (not shown) of the approximately arc-shaped portion surrounded by the inner hollow contour line Lo.

[0184] As shown in Figure 17, the second section S12 is the section located on the right side of the two sections formed by dividing the approximately arc-shaped portion surrounded by the first dividing line L11, the second dividing line L12, and the inner hollow contour line Lo by the third dividing line L13. In other words, the first section S11 and the second section S12 are arc sections that are aligned along the arch portion of the tunnel T and are symmetrical with respect to the third dividing line L13 as the axis of symmetry, and are generally arc-shaped in front view.

[0185] 17, the third section S13 is the central section of three sections obtained by dividing the substantially semicircular portion surrounded by the first division line L11 and the second division line L12 by the fourth division line L14 and the fifth division line L15, which are located at positions spaced a predetermined distance apart on the left and right of the tunnel center. In other words, the third section S13 is a substantially rectangular section in front view that is line-symmetrical with the first division line L11 as its lower side and the third division line L13 as its axis of symmetry.

[0186] As shown in Figure 17, the fourth section S14 is the leftmost section of the three sections formed by dividing the approximately semicircular portion surrounded by the first dividing line L11 and the second dividing line L12 by the fourth dividing line L14 and the fifth dividing line L15. As shown in Figure 17, the fifth section S15 is the rightmost section of the three sections formed by dividing the approximately semicircular portion surrounded by the first division line L11 and the second division line L12 by the fourth division line L14 and the fifth division line L15.

[0187] As shown in Figure 17, the sixth section S16 is a section surrounded by the above-mentioned first dividing line L11, the sixth dividing line L16 that is parallel to the spring line Ls and located below the spring line Ls, and the inner hollow contour line Lo.

[0188] As shown in Figure 17, the seventh section S17 is the section located on the left of the two sections formed by dividing the area surrounded by the above-mentioned sixth dividing line L16 and the inner hollow contour line Lo by the seventh dividing line L17 located on the tunnel center (not shown). As shown in FIG. 17, the eighth section S18 is the section located on the right side of the two sections formed by dividing the area surrounded by the sixth division line L16 and the hollow outline line Lo by the seventh division line L17.

[0189] In addition, in the modified example, the setting data (not shown) divides the interior of the hollow contour line Lo into eight sections, so the estimated energy value column 301, the drilling length column 302, and the blasting pattern column 303 are registered in association with each section from the first section S11 to the eighth section S18.

[0190] Next, a processing operation for generating a blasting pattern suitable for the natural ground portion Gx to be excavated in the blasting pattern generation system 1 of the modified example will be described. First, in the modified example, as in the above-described embodiment, the support control unit 18 of the tunnel boring machine 10 performs the processing of step S101 and steps S103 to S107 in Figure 9, and the terminal control unit 25 of the information processing terminal 20 performs the processing of step S102 and steps S106 to S108 in Figure 9. The processing operations from step S101 to step S108 are the same as those in the above-described embodiment, and therefore detailed description thereof will be omitted.

[0191] Then, in step S109 of FIG. 9, the terminal control unit 25 of the information processing terminal 20 starts the blasting pattern generation process based on the hole-boring data 29 stored through steps S101 to S108. More specifically, in step S121 of FIG. 10, the terminal control unit 25 displays on the display unit 21 a size change screen 200A for changing the size of each section of the section data 28A.

[0192] As shown in Figure 18(a), this resizing screen 200A displays a partition data display field 201 that displays the modified partition data 28A, a numerical input field 202 for changing the proportion of each partition that occupies the interior of the hollow contour line Lo, and a drawing button 203 for redrawing the partition data 28A in the partition data display field 201.

[0193] Furthermore, the size change screen 200A displays a pattern setting button 204 that displays the pattern setting screen 210, a save button 205 that updates the section data 28A based on the numerical value in the numerical input field 202, and a back button 206 for returning to the previous screen (not shown).

[0194] In addition, the numerical input field 202 displays a width input field (symbol omitted) for inputting the widthwise length W1 from the tunnel center to the right and left sides of the third section S13, and a radius difference input field (symbol omitted) for inputting the distance ΔR from the arch portion of the inner hollow contour line Lo to the second dividing line L12 in the radial direction of the arch portion of the inner hollow contour line Lo.

[0195] In addition, the numerical input field 202 displays a second height input field (symbol omitted) for inputting the vertical length H2 from the spring line Ls to the first dividing line L11, and a third height input field (symbol omitted) for inputting the vertical length H3 from the spring line Ls to the sixth dividing line L16.

[0196] With this size change screen 200A displayed on the display unit 21, the user changes the value in the numerical input field 202 to the desired value, then presses the drawing button 203 to change the size of each section while checking the size of each section in the section data display field 201.

[0197] In addition, the pattern setting screen 210A that is displayed when the pattern setting button 204 on the size change screen 200A is pressed displays a selection tab (numeral omitted) for selecting one of the first section S11 to the eighth section S18, and a setting data display field 211 that displays the setting data corresponding to the section selected on the selection tab, as shown in Figure 18(b), for example.

[0198] Furthermore, the pattern setting screen 210A displays a section column 212 indicating the section position of the section data 28A, a save button 213 for updating the setting data (not shown) with the changes, a back button 214 for returning to the resize screen 200A, and a batch setting button 215 for making the settings of all sections, including the section indicated by the currently selected tab, the same.

[0199] When the user presses the batch setting button 215, the terminal control unit 25 of the information processing terminal 20 updates the pattern setting screen 210A by applying the range of estimated energy values ​​of the section selected in the selection tab and the blasting pattern appropriate for the range of estimated energy values ​​to all sections including the section indicated by the current selection tab.

[0200] When the save button 205 on the resize screen 200A is pressed (step S122: Yes), the terminal control unit 25, which has displayed the resize screen 200A on the display unit 21, updates the partition data 28A in the memory unit 24 with the size of each partition based on the numerical value in the numerical input field 202 (step S123), as shown in FIG. 10, and then proceeds to step S124.

[0201] If the pattern setting button 204 is pressed instead of the save button 205 (step S122: No), the terminal control unit 25 skips step S123 and proceeds to step S124, as in the above embodiment.

[0202] Then, the terminal control unit 25 performs the processing of steps S124 and S125 in Figure 10 in the same manner as in the above-mentioned embodiment, and then starts the estimated energy calculation process to calculate the estimated energy value required to drill the natural ground portion Gx to be excavated (step S126).

[0203] More specifically, as shown in Figure 12, in step S142, which is reached after step S141, the terminal control unit 25 superimposes the position of the charge hole corresponding to the drilling energy value calculated in step S141 with the modified example section data 28A, and determines whether there is a section where the variation in the drilling energy value is greater than a predetermined threshold.

[0204] In this case, if there are no sections where the variation in drilling energy values ​​is greater than the predetermined threshold (step S142: No), the terminal control unit 25 proceeds to step S144; if there are sections where the variation in drilling energy values ​​is greater than the predetermined threshold (step S142: Yes), the terminal control unit 25 deletes the charging holes corresponding to drilling energy values ​​that exceed the ±2σ variance range (step S143), and then proceeds to step S144.

[0205] Thereafter, the terminal control unit 25 performs the processes from step S144 to step S147 in the same manner as in the above-described embodiment, and then determines whether the count value n updated in step S147 exceeds the number of partitions, which is "8" (step S148). If the current count value n exceeds "8" (step S148: Yes), the terminal control unit 25 ends the estimated energy calculation process and proceeds to step S127 in FIG.

[0206] Returning to step S126 in Figure 10, the terminal control unit 25 starts a composite pattern data generation process to generate composite pattern data 27A suitable for the natural ground portion Gx to be excavated based on the estimated energy value of each section calculated in the estimated energy calculation process (step S127).

[0207] Specifically, the terminal control unit 25 performs the processes from step S161 to step S167 in FIG. 14, as in the above-described embodiment, and then proceeds to step S168. In step S168, the terminal control unit 25 determines whether the count value n updated in step S167 exceeds "8", which is the number of partitions.

[0208] Then, if the updated count value n exceeds "8" (step S168: Yes), the terminal control unit 25 generates a new blasting pattern suitable for the natural ground portion Gx to be excavated (step S169).

[0209] At this time, the terminal control unit 25, as in the above-described embodiment, synthesizes the extracted data (not shown) corresponding to each of the first section S11 to the eighth section S18 so as to overlap them in the excavation direction X, thereby generating a new blasting pattern. Furthermore, the terminal control unit 25 calculates the average value of the drilling lengths as the average drilling length based on the drilling lengths associated with the extracted data, and associates the calculated average drilling length with the new blasting pattern generated as the drilling length at each drilling position.

[0210] Thereafter, the terminal control unit 25 stores the generated new blasting pattern in the memory unit 24 as composite pattern data 27A (step S170), then displays a composite result screen 240 showing the composite pattern data 27A on the display unit 21, and proceeds to step S128 in Figure 10.

[0211] As shown in Figure 19, this synthesis result screen 240 displays a pattern display field 241 that displays the new blasting pattern indicated by the synthetic pattern data 27A, a variety of information field 242 that displays the number of drilling positions and drilling length registered in the synthetic pattern data 27A, a drilling length input field 243 for changing the drilling length, a save button 244 for saving the modifications to the synthetic pattern data 27A, and a close button 245 for closing the screen.

[0212] As in the above-described embodiment, the synthesis result screen 240 is configured so that the blasting pattern within a section can be changed by selecting and pressing each section of the blasting pattern. Furthermore, the synthesis result screen 240 is configured to accept an input operation by the user into a drilling length input field 243, so that the drilling length of the synthesis pattern data 27A can be changed.

[0213] Thereafter, when the terminal control unit 25 that has displayed the synthesis result screen 240 accepts an operation by the user who desires to correct the synthesis pattern data 27A (step S128: Yes), it starts the synthesis pattern data correction process (step S129). For example, if a user changes the value in the drilling length input field 243 on the composite result screen 230, the terminal control unit 25 updates the drilling length in the various information field 242 to the value in the drilling length input field 243, and sets the value in the drilling length input field 243 as the new drilling length to be associated with the composite pattern data 27A.

[0214] Then, when the user presses the save button 244 in step S129, the terminal control unit 25 updates the composite pattern data 27A with a new blasting pattern that reflects the correction content, and then ends the blasting pattern generation process.

[0215] The composite pattern data 27A generated in this manner is transmitted to the tunnel boring machine 10 as a blasting pattern suitable for the natural ground portion Gx to be excavated in step S102 of Figure 9, as in the above-mentioned embodiment, and is used to excavate the natural ground portion Gx to be excavated.

[0216] As described above, the modified blasting pattern generation system 1 is equipped with a memory unit 24 that stores drilling data 29 and basic pattern data, a display means (display unit 21) that displays partition data 28, a partition update means (terminal control unit 25) that changes the proportion of partitions in partition data 28A, and an intensity estimation means (terminal control unit 25) that calculates an estimated energy value for each partition in the natural ground portion Gx to be excavated.

[0217] Furthermore, the blasting pattern generation system 1 is equipped with an extraction means (terminal control unit 25) that extracts a portion corresponding to a section from basic pattern data corresponding to an estimated energy value, and a generation means (terminal control unit 25) that generates composite pattern data 27A by combining the extracted portions corresponding to the section.

[0218] Here, the section data 28A is configured to divide the design cross-sectional shape into sections so that the design cross-sectional shape includes a first section S11 and a second section S12, which are approximately arc-shaped sections that follow the arch portion of the tunnel T. The section update means (terminal control unit 25) is configured to change the ratio of the first section S11 to the second section S12 according to a user operation.

[0219] In addition, the modified blasting pattern generation method includes a display process in which section data 28A, which divides the design cross-sectional shape of tunnel T into a plurality of sections, is displayed on a display means, and a section update process in which, upon receiving an operation from a user, the section update means changes the proportion of at least one section in the section data 28A to update the section data 28A.

[0220] Furthermore, the blasting pattern generation method performs an intensity estimation process and an extraction process in the same manner as in the above-described embodiment, and then performs a generation process in which a new blasting pattern is generated as composite pattern data 27A by combining the parts corresponding to the sections extracted from the basic pattern data.

[0221] Here, the section data 28A is configured to divide the design cross-sectional shape into sections so that the design cross-sectional shape includes a first section S11 and a second section S12, which are approximately arc-shaped sections that follow the arch portion of the tunnel T. In the section updating step of the blasting pattern generating method, an operation by a user is accepted to change the proportion of the first section S11 and the second section S12, thereby updating the section data 28A.

[0222] As a result, the blasting pattern generation system 1 and blasting pattern generation method of the modified example, like the above-mentioned embodiment, can generate a new blasting pattern that takes into account not only the variation in estimated strength in the ground portion Gx to be excavated but also the excavation conditions of the excavated ground Ga, Gb, and therefore can generate a blasting pattern (synthetic pattern data 27A) that is more suitable for the ground portion Gx to be excavated.

[0223] Furthermore, the modified blasting pattern generation system 1 and blasting pattern generation method can change the proportion occupied by the arc sections (first section S11 and second section S12) along the arch portion of the tunnel T, so that both the proportion occupied by the arc sections and the proportion occupied by at least the sections adjacent to the arc sections can be changed simultaneously and easily.

[0224] As a result, the modified blasting pattern generation system 1 and blasting pattern generation method can efficiently change the sizes of multiple sections in the section data 28A, thereby efficiently generating blasting patterns suitable for the natural ground portion Gx to be excavated.

[0225] In addition, in order to prevent the occurrence of "hits" and "over-excavation," the insertion angle (the angle of the drilling direction relative to the excavation direction X of tunnel T) and the spacing of the charge holes provided along the arch portion of tunnel T may be set to the same value in all of the target ground portions Gx to be excavated.

[0226] Even in such a case, the blasting pattern generation system 1 and the blasting pattern generation method can efficiently generate a blasting pattern that is suitable for the natural ground portion Gx to be excavated and that further reduces the occurrence of ``hits'' and ``over-excavation'' by using basic pattern data in which, for example, the desired insertion angle and spacing of the charge holes are associated with arc sections (first section S11 and second section S12).

[0227] The blasting pattern generation system 1 is also provided with a hole drilling length changing means (operation receiving unit 22 and terminal control unit 25) that changes the hole drilling length associated with the composite pattern data 27A by receiving an operation from the user.

[0228] According to this configuration, the user can modify the drilling length of the composite pattern data 27A depending on, for example, the occurrence of "hits" or "excess excavation" in the excavated natural ground Ga, Gb, or the crushing state of "mud." As a result, the blasting pattern generation system 1 and the blasting pattern generation method can generate blasting patterns that utilize the user's experience to reduce the occurrence of "hits" and "excessive excavation."

[0229] In correspondence between the configuration of this invention and the above-mentioned embodiment, The strength index of the present invention corresponds to the drilling energy value of the embodiment, Similarly, The basic pattern data corresponds to the soft pattern data 31, the hard pattern data 32, and the standard pattern data 33. The storage means corresponds to the storage unit 24, The sections correspond to a first section S1, a second section S2, a third section S3, a fourth section S4, a fifth section S5, a sixth section S6, and a seventh section S7, and a first section S11, a second section S12, a third section S13, a fourth section S14, a fifth section S15, a sixth section S16, a seventh section S17, and an eighth section S18, The display means corresponds to the display unit 21, The section update means, the pattern change means, and the correspondence change means correspond to the operation reception unit 22 and the terminal control unit 25, The estimated intensity corresponds to the estimated energy value, The intensity estimation means, extraction means, generation means, data acquisition means, and output means correspond to the terminal control unit 25. The rectangular sections correspond to the third section S3 and the third section S13, The first drilling data corresponds to drilling data 29 of the excavated ground Ga, The second drilling data corresponds to drilling data 29 of the excavated ground Gb, The first average value corresponds to a first average drilling energy value; The second average value corresponds to the second average drilling energy value; The drilling device corresponds to a tunnel boring machine 10, The display step corresponds to step S121. The section update process corresponds to step S122 and step S123. The intensity estimation step corresponds to step S126. The extraction process corresponds to steps S161 to S168. The generation process corresponds to step S169 and step S170. The arc sections correspond to the first section S11 and the second section S12, The present invention is not limited to the configurations of the above-described embodiments, and many other embodiments can be obtained.

[0230] For example, in the above-described embodiment, pattern data was exchanged between the tunnel boring machine 10 and the information processing terminal 20 via a communication line 2, but this is not limited to this, and pattern data may also be exchanged via a portable storage medium. Similarly, the tunnel boring machine 10 and the information processing terminal 20 exchanged drilling data 17a via the communication line 2, but this is not limited to this, and the drilling data 17a may also be exchanged via a portable storage medium.

[0231] Furthermore, although the configuration is described as including a tunnel boring machine 10 and an information processing terminal 20 connected via a communication line 2, this is not limited to this, and the configuration may also include a server connected to the tunnel boring machine 10 and the information processing terminal 20 via the communication line 2.

[0232] In this case, the support control unit 18 of the tunnel boring machine 10 stores the hole drilling data 17a in the server each time the natural ground portion Gx to be excavated is excavated, and also acquires the composite pattern data 27 from the server. On the other hand, the terminal control unit 25 of the information processing terminal 20 generates composite pattern data 27 based on the hole drilling data 17a stored in the server, and stores the composite pattern data 27 in the server.

[0233] Furthermore, the section data 28 is divided into seven sections, from the first section S1 to the seventh section S7, but this is not limited to this, and the section data 28 may be divided into an appropriate number of sections within the hollow contour line Lo. Furthermore, the shapes of the first section S1 to the seventh section S7 in the section data 28 are not limited to those in the above-described embodiment, and the sections may have any appropriate shape.

[0234] Furthermore, the range of estimated energy values ​​and the drilling length registered in the setting data 30 are not limited to the values ​​in the above-described embodiment, and may be any appropriate values. Furthermore, although the soft pattern data 31, hard pattern data 32 and standard pattern data 33 are stored as basic pattern data in the memory unit 24 of the information processing terminal 20, this is not limited to this, and any appropriate number of blasting patterns may be stored as basic pattern data.

[0235] Furthermore, the drilling positions in the soft pattern data 31, hard pattern data 32 and standard pattern data 33 are merely examples, and are not limited to these, and may be blasting patterns appropriately designed according to the strength of the ground.

[0236] Furthermore, the size change screen 200 in FIG. 11(a), the pattern setting screen 210 in FIG. 11(b), the calculation result screen 220 in FIG. 13(a), and the synthesis result screen 230 in FIG. 13(b) are merely examples, and are not limited to these, and any appropriate screen configuration may be used.

[0237] Furthermore, the processing operations in the blasting pattern generation system 1 in Figure 9, the blasting pattern generation process in Figure 10, the estimated energy calculation process in Figure 12, and the composite pattern data generation process in Figure 14 are only examples, and are not limited to these, and any appropriate processing flow may be used.

[0238] Also, in step S102 of Figure 9, when the ground portion Gx to be excavated is the first excavation target, for example, standard pattern data 33 is transmitted, but this is not limited to this and soft pattern data 31 or hard pattern data 32 may also be transmitted.

[0239] Furthermore, in steps S142 and S143 of the estimated energy calculation process in Figure 12, if there is a large variation in the drilling energy values, drilling energy values ​​that exceed the dispersion range of ±2σ, which is twice the standard deviation σ, are excluded from subsequent calculation targets, but this is not limited to this, and the estimated energy calculation process may not perform the processing of steps S142 and S143. In addition, drilling energy values ​​that exceed the variance range of ±2σ, which is twice the standard deviation σ, are excluded from subsequent calculations, but this is not limited to this, and drilling energy values ​​that exceed the variance range obtained by multiplying the standard deviation σ by an appropriate coefficient, or the variance range of ±σ, may also be excluded from subsequent calculations.

[0240] Furthermore, in step S146 of Figure 12, the estimated energy value was calculated based on the drilling energy value in the excavated ground Ga that was one step before the ground portion Gx to be excavated, and the drilling energy value in the excavated ground Gb that was two steps before the ground portion Gx to be excavated, but this is not limited to this. For example, the first average drilling energy value of the excavated natural ground Ga immediately preceding the natural ground portion Gx to be excavated may be used as the estimated energy value of the natural ground portion Gx to be excavated.

[0241] In addition, as an example, the drilling energy value was calculated based on the oil pressure, drilling speed and reaction pressure of the drilling data 29, but this is not limited to this, and the drilling energy value may be calculated by appropriately combining the oil pressure, feed pressure, damping pressure, impact pressure, drilling speed, drilling length, drilling direction and reaction pressure of the drilling data 29.

[0242] Furthermore, although the explanation has been given using the drilling energy value required to drill the charge hole, this is not limited to this, and the composite pattern data 27 may be generated based on an appropriate strength indicator registered in the drilling data 29 instead of the drilling energy value.

[0243] Specifically, the composite pattern data 27 may be generated using any one of the oil pressure, feed pressure, damping pressure, impact pressure, drilling speed, drilling length, drilling direction and reaction pressure of the drilling data 17a as a strength indicator instead of the drilling energy value.

[0244] Furthermore, the division data 28A of the modified example is divided into eight divisions, from the first division S11 to the eighth division S18, but this is not limited to this, and the division data 28A may be divided into an appropriate number of divisions within the hollow contour line Lo. For example, the approximately arc-shaped portion surrounded by the first dividing line L11, the second dividing line L12, and the hollow contour line Lo is divided by the third dividing line L13 to form the first section S11 and the second section S12, but the approximately arc-shaped portion surrounded by the first dividing line L11, the second dividing line L12, and the hollow contour line Lo may also be formed into a single section.

[0245] Similarly, the approximately semicircular portion surrounded by the first dividing line L11 and the second dividing line L12 is divided by the fourth dividing line L14 and the fifth dividing line L15 to form the third section S13, the fourth section S14, and the fifth section S15, but the approximately semicircular portion surrounded by the first dividing line L11 and the second dividing line L12 may also be treated as a single section. Alternatively, the area surrounded by the sixth dividing line L16 and the hollow contour line Lo is divided by the seventh dividing line L17 to form the seventh section S17 and the eighth section S18, but the area surrounded by the sixth dividing line L16 and the hollow contour line Lo may also be made into a single section.

[0246] In addition, the proportion occupied by each section is changed and the section data 28A is updated based on the radial length (distance ΔR) of the first section S11 and the second section S12, the width and height (width length W1 and distance ΔR) of the third section S13, and the height (vertical lengths H2, H3) of the sixth section S16 input by the user, but this is not limited to this. For example, the section data 28A may be updated based on the ratios of the first section S11 and the second section S12, the ratio of the third section S13, and the ratio of the sixth section S16 input by the user.

[0247] In addition, in step S169 of the composite pattern data generation process in the modified example, the average drilling length calculated based on the drilling lengths associated with the extracted data is associated with the new blasting pattern generated as the drilling length at each drilling position, but this is not limited to this. For example, instead of calculating the average drilling length based on the drilling lengths of the extracted data, the drilling lengths of the extracted data may be associated with the new blasting pattern as the drilling length for each section.

[0248] Furthermore, the synthesis result screen 240 of the modified example is merely an example and is not limited to this, and may be configured to accept, for example, a user's correction of the drilling length of the synthesis pattern data 27A for each section. In this case, in step S129 of Fig. 10, the terminal control unit 25 changes the drilling length of the section selected by the user to the drilling length input by the user, and updates the synthesis pattern data 27A. [Explanation of symbols]

[0249] 1... Blasting pattern generation system 10...Tunnel boring machine 21...Display section 22...Operation reception section 24...Storage section 25...Terminal control unit 27, 27A...Synthetic pattern data 28,28A...Plot data 29...Drilling data 31...Soft pattern data 32...Hard pattern data 33...Standard pattern data F, Fa, Fb...face Ga, Gb: Excavated ground Gx: Natural ground S1, S11... Section 1 S2, S12...Second Section S3, S13... Section 3 S4, S14...4th section S5, S15...5th section S6,S16…6th section S7, S17...7th section S18…8th section T...tunnel σ...standard deviation

Claims

1. A blasting pattern generation system that generates a blasting pattern based on the excavation status of an excavated ground that has been excavated before a ground portion that is an excavation target including a tunnel face, A storage means for storing drilling data acquired by drilling a charge hole in the excavated natural ground and a plurality of basic pattern data showing blasting patterns with different ranges of corresponding strength indexes; a display means for displaying section data obtained by dividing the design cross-sectional shape of the tunnel into a plurality of sections; a section updating means for accepting an operation by a user and updating the section data by changing the proportion of at least one of the sections; a strength estimation means for calculating an estimated strength indicating a strength index of the section in the natural ground portion to be excavated based on the drilling data; an extraction means for selecting, for each of the sections, the basic pattern data corresponding to the estimated intensity calculated by the intensity estimation means, and extracting a portion corresponding to the section from the basic pattern data; and a generating means for generating a new blasting pattern as composite pattern data by synthesizing the portion corresponding to the section extracted from the basic pattern data. Blasting pattern generation system.

2. The partition data is The designed cross-sectional shape is divided into sections so as to include a rectangular section, which is a section having a substantially rectangular shape, inside the designed cross-sectional shape, The section update means The proportion of the rectangular section is changed by the user's operation. The blasting pattern generation system of claim 1 .

3. The generating means The hole length corresponding to the estimated strength for each section calculated by the strength estimation means is generated in association with the composite pattern data. The blasting pattern generation system of claim 1 .

4. A pattern change means is provided for changing the blasting pattern for each section in the composite pattern data generated by the generation means to a different blasting pattern in response to an operation by the user. The blasting pattern generation system of claim 1 .

5. a correspondence change means for changing the correspondence between the estimated intensity calculated by the intensity estimating means and the basic pattern data selected by the extracting means in response to an operation by the user; The blasting pattern generation system of claim 1 .

6. The intensity estimation means A strength index for each of the charging holes is calculated based on the drilling data, and the estimated strength for each of the sections is calculated using the effective strength index among all the calculated strength indexes. The blasting pattern generation system of claim 1 .

7. The storage means At least first drilling data, which is the drilling data in the excavated natural ground immediately before the natural ground portion to be excavated, and second drilling data, which is the drilling data in the excavated natural ground two or more times before the natural ground portion to be excavated, are stored; The intensity estimation means A first average value indicating the average value of the strength index of the section is calculated based on the first drilling data, and a second average value indicating the average value of the strength index of the section is calculated based on the second drilling data, and the estimated strength for each section is calculated based on the rate of change of the first average value relative to the second average value. The blasting pattern generation system of claim 1 .

8. a data acquisition means for acquiring the drilling data from a drilling device that drills the natural ground portion to be excavated; and an output means for outputting the composite pattern data generated by the generation means to the drilling device. The blasting pattern generation system of claim 1 .

9. A blasting pattern generation method for generating a blasting pattern based on the excavation status of an excavated natural ground that has been excavated before a natural ground portion that is an excavation target including a tunnel face, comprising: In a state where drilling data acquired by drilling a charge hole in the excavated natural ground and a plurality of basic pattern data showing blasting patterns with different ranges of corresponding strength indexes are stored in a storage means, a display step of displaying on a display means section data in which the design cross-sectional shape of the tunnel is divided into a plurality of sections; a section updating step in which section updating means updates the section data by changing the proportion of at least one of the sections in the section data in response to an operation by a user; a strength estimating step in which a strength estimating means calculates an estimated strength indicating a strength index of the section in the natural ground portion to be excavated based on the drilling data; an extraction step in which an extraction means selects, for each of the sections, the basic pattern data corresponding to the estimated intensity calculated in the intensity estimation step, and extracts a portion corresponding to the section from the basic pattern data; a generating step in which a generating means generates a new blasting pattern as composite pattern data by combining the portion corresponding to the section extracted from the basic pattern data; Blasting pattern generation method.

10. A blasting pattern generation system that generates a blasting pattern based on the excavation status of an excavated ground that has been excavated before a ground portion that is an excavation target including a tunnel face, A storage means for storing drilling data acquired by drilling a charge hole in the excavated natural ground and a plurality of basic pattern data showing blasting patterns with different ranges of corresponding strength indexes; a display means for displaying section data obtained by dividing the design cross-sectional shape of the tunnel into a plurality of sections; a section updating means for accepting an operation by a user and updating the section data by changing the proportion of at least one of the sections; a strength estimation means for calculating an estimated strength indicating a strength index of the section in the natural ground portion to be excavated based on the drilling data; an extraction means for selecting, for each of the sections, the basic pattern data corresponding to the estimated intensity calculated by the intensity estimation means, and extracting a portion corresponding to the section from the basic pattern data; and a generating means for generating a new blasting pattern as composite pattern data by synthesizing the portion corresponding to the section extracted from the basic pattern data, The partition data is The design cross-sectional shape is divided into sections so as to include an arc section, which is a section having a substantially arc shape along an arch portion of the tunnel, within the design cross-sectional shape, The section update means The proportion of the arc section is changed by the user's operation. Blasting pattern generation system.

11. A blasting pattern generation method for generating a blasting pattern based on the excavation status of an excavated natural ground that has been excavated before a natural ground portion that is an excavation target including a tunnel face, comprising: In a state where drilling data acquired by drilling a charge hole in the excavated natural ground and a plurality of basic pattern data showing blasting patterns with different ranges of corresponding strength indexes are stored in a storage means, a display step of displaying on a display means section data in which the design cross-sectional shape of the tunnel is divided into a plurality of sections; a section updating step in which section updating means updates the section data by changing the proportion of at least one of the sections in the section data in response to an operation by a user; a strength estimating step in which a strength estimating means calculates an estimated strength indicating a strength index of the section in the natural ground portion to be excavated based on the drilling data; an extraction step in which an extraction means selects, for each of the sections, the basic pattern data corresponding to the estimated intensity calculated in the intensity estimation step, and extracts a portion corresponding to the section from the basic pattern data; a generating step in which a generating means generates a new blasting pattern as composite pattern data by combining the portion corresponding to the section extracted from the basic pattern data; The partition data The design cross-sectional shape is divided into sections so as to include an arc section, which is a section having a substantially arc shape along the arch portion of the tunnel, within the design cross-sectional shape, In the section updating step, The operation by the user is accepted, and the proportion of the arc section is changed to update the section data. Blasting pattern generation method.

Images