Information processing apparatus and information processing method

Abstract

To survey the state of the ground more easily and at low cost.SOLUTION: A model processing part refers to drilling data showing a drilling time and a drilling section for each rod about each drilling point, specifies a change point where a change amount of the drilling time between the rods is larger than a threshold value of a predetermined change amount, and determines a boundary surface passing through the change point where a change tendency of the drilling time is common among three or more drilling points. The embodiment of the present application can be realized in any form such as an information processing apparatus and an information processing method.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present application relates to an information processing device and an information processing method. [Background technology]

[0002] In mountain tunnel construction, it is important to understand the ground conditions, including those ahead of the tunnel face, in order to ensure the safety of construction in unstable areas of the ground, such as fractured zones, and to implement countermeasure work accurately and without delay. When investigating the conditions ahead of the tunnel face, well-drilling logging is used at many construction sites. Well-drilling logging refers to the exploration of changes in the hardness and softness of the ground and geological conditions using drilling data obtained by drilling holes in the rock mass. This method allows for the understanding of the strength distribution of the rock mass relatively easily and at low cost (for example, Patent Documents 1-3). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 4-161588 [Patent Document 2] Japanese Patent Application Laid-Open No. 2009-161964 [Patent Document 3] Japanese Patent Application Publication No. 2023-003119 Summary of the Invention [Problem to be solved by the invention]

[0004] However, not all mountain tunnel construction sites are equipped with computerized drilling machines or drilling logging systems capable of calculating drilling input energy. On the other hand, mountain tunnel construction sites typically employ drilling machines. A drilling machine is a rock drill equipped with a flexible arm. When drilling, a rod is attached to the end of the arm and rotated while pressing it against the excavation surface. Therefore, drilling surveys using a drilling machine can obtain basic information such as drilling position information, drilling direction and angle, drilling time for each rod, and the color and amount of slime or return water for each rod. The drilling position information includes the three-dimensional coordinates of the start and end points. Therefore, it is desirable to use this information to easily and inexpensively investigate the situation ahead of the tunnel face.

[0005] The present application has been made in view of the above circumstances, and one of its objects is to more simply and at low cost explore the state of the ground. [Means for solving the problem]

[0006] (1) One aspect of the present application is an information processing device that has a model processing unit that refers to drilling data indicating the drilling time and drilling section for each rod for each drilling point, identifies change points where the change in drilling time between rods is greater than a predetermined change threshold, and determines a boundary surface that passes through change points where the change trend in drilling time is common between three or more drilling points.

[0007] (2) One aspect of the present application is an information processing device that includes a model processing unit that refers to drilling data indicating the drilling time and drilling section for each rod for each drilling point, identifies change points where the change in drilling time between rods is greater than a predetermined change threshold, refers to drilling data indicating the classification of strata or hardness at one or more drilling points, and determines a boundary surface that passes through a first type change point where the change trend in drilling time is common between two or more drilling points, and a second type change point where a change in strata or hardness occurs corresponding to the change trend.

[0008] (3) One aspect of the present application is an information processing method in which an information processing device executes the steps of: referring to drilling data indicating the drilling time and drilling section for each rod for each drilling point; and identifying a change point where the change in drilling time between rods is greater than a predetermined change threshold; and determining a boundary surface passing through the change point where the change trend in drilling time is common between three or more drilling points. [Effects of the Invention]

[0009] According to the embodiment of the present application, the condition of the ground can be investigated more simply and at low cost. [Brief explanation of the drawings]

[0010] [Figure 1] 1 is a block diagram illustrating an example of a functional configuration of an information processing device according to an embodiment of the present invention. [Figure 2] FIG. 2 is a schematic block diagram illustrating an example of the functional configuration of a model processing unit according to the present embodiment. [Figure 3] FIG. 10 is a diagram illustrating a three-dimensional display based on drilling data according to this embodiment. [Figure 4] 10A and 10B are explanatory diagrams illustrating a method for identifying a boundary surface according to the present embodiment. [Figure 5] FIG. 10 is an explanatory diagram illustrating a method for identifying a layer according to the embodiment. [Figure 6] 10 is a flowchart illustrating a procedure for acquiring drilling data according to this embodiment. [Figure 7] 10 is a flowchart illustrating an information processing procedure according to the present embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0011] The present embodiment will be described below with reference to the drawings. An information processing device 10 according to this embodiment acquires drilling data indicating the drilling status at three or more drilling points. A drilling point refers to the location where a hole is drilled. When distinguishing between individual holes, the drilling point may refer to the drilling start point where drilling begins. Drilling is performed by attaching a rod to the tip of a jumbo drill's arm and rotating the rod while pressing it against the drilling surface. The rod is a bar made of tool steel. The drilling data includes information indicating the drilling time and drilling section for each rod used in drilling. The information processing device 10 references the drilling data to identify change points where the change in drilling time between adjacent rods is greater than a predetermined change threshold. The information processing device 10 determines a boundary surface passing through change points where the change in drilling time between three or more drilling points is common.

[0012] Next, an example of the functional configuration of the information processing device 10 according to this embodiment will be described. Fig. 1 is a block diagram showing an example of the functional configuration of the information processing device 10 according to this embodiment. The information processing device 10 includes a control unit 12, a communication unit 14, an input unit 16, and a display unit 18. The information processing device 10 may be configured as a general-purpose information terminal device such as a personal computer, a tablet terminal device, or a mobile phone, or may be configured to include dedicated hardware.

[0013] The control unit 12 performs processing and control for realizing various functions of the information processing device 10. The control unit 12 includes a model processing unit 122, a display processing unit 124, and a data setting unit 126. The model processing unit 122 acquires the drilling data from the data setting unit 126. The model processing unit 122 refers to the acquired drilling data and specifies the drilling time and drilling section for each rod at each drilling point.

[0014] The model processing unit 122 identifies as a change point a boundary between rods where the change in drilling time between adjacent rods in the drilling section becomes greater than a predetermined change threshold. The model processing unit 122 determines a boundary surface that passes through a change point where the change trend in drilling time between three or more drilling points is common. The model processing unit 122 may also identify layers sandwiched between adjacent boundary surfaces in the drilling direction. An example of the functional configuration of the model processing unit 122 will be described later.

[0015] The display processing unit 124 configures various display screens and generates display data showing the configured display screens. The display processing unit 124 outputs the generated display data to the display unit 18. By outputting this display data, the display processing unit 124 displays the display screens. The display processing unit 124 may configure a display screen showing the three-dimensional shape of the identified surface or layer and display it on the display unit 18.

[0016] The data setting unit 126 sets data related to various processes in the model processing unit 122. The data setting unit 126, for example, acquires drilling data indicating the drilling status in a drilling survey, and sets the acquired drilling data in the model processing unit 122. The data setting unit 126 displays a predetermined setting screen on the display unit 18 and edits the drilling data in accordance with operation signals input from other devices via the input unit 16 or the communication unit 14. Editing includes creating new data, deleting, changing or adding part of the data. The data setting unit 126 may receive drilling data from other devices using the communication unit 14 without displaying the setting screen.

[0017] The data setting unit 126 may also set a threshold for the change in drilling time per rod based on the properties of adjacent strata at the construction site. The threshold for the change in drilling time is set, for example, as a real value that can significantly distinguish the difference in the change in drilling time estimated from the difference in hardness of overlapping strata. While the drilling time may vary for strata with uneven hardness, such as weak strata containing rock masses, the threshold for the change in drilling time may be set to a value that can be distinguished from the drilling time for other strata. The threshold for the change in drilling time may be fixed to a predetermined constant value or may be a set value instructed by an operation signal input from the input unit 16. For example, the setting screen may have a display and input field for the setting value for each setting item, or may have a screen component (e.g., a dial, slider bar, etc.) that displays the setting value and allows the setting value to be adjusted according to operation. This allows users, such as engineers and supervisors, to set the threshold for the change in drilling time appropriate for the conditions at the construction site.

[0018] The communication unit 14 inputs and outputs various data to and from other devices via wired or wireless connections. The communication unit 14 is connected to a server device installed at a business premises via a network, for example, and receives drilling data from the server device. The communication unit 14 outputs the received drilling data to the control unit 12. The communication unit 14 may be connected to a drilling machine having various arithmetic and control functions instead of a server device, and receive the drilling data. The communication unit 14 includes, for example, a communication interface. The communication unit 14 may be directly connected to other devices so as to be able to send and receive data therebetween without using a network.

[0019] The input unit 16 receives a user operation and generates an operation signal in accordance with the received operation. The input unit 16 outputs the generated operation signal to the control unit 12. The input unit 16 may have a general-purpose input device such as a mouse or a touch sensor, or may have a dedicated input device such as a button, a lever, or a dial.

[0020] The display unit 18 displays a display screen indicated by display data input from the control unit 12. The display unit 18 may have any type of display monitor, such as a liquid crystal display (LCD) or an organic light emitting diode (OLED) display. One or both of the input unit 16 and the display unit 18 may be configured as an integrated part of the information processing device 10, or may be configured separately from the information processing device 10. The touch sensor that constitutes the input unit 16 and the display that constitutes the display unit 18 may be configured separately, or may be configured as an integrated touch panel.

[0021] The data setting unit 126 only needs to acquire drilling data indicating the drilling time and drilling section for each rod for at least three or more drilling points. The length of the hole formed by drilling (sometimes referred to as the "excavation length" in this application) is typically about 20 to 30 m. In tunnel exploration, for example, the center, right side, and left side of the tunnel face, or the center, upper half, and lower half of the tunnel face are used as drilling points, but this is not limited to this. Some or all of the drilling points may be set at points other than the tunnel face. Three or more drilling points may be set across multiple tunnel faces. However, it is desirable to set three or more drilling points so that the area including the three or more drilling points partially or completely overlaps with the construction area.

[0022] Figure 3 is a diagram illustrating drilling data. Figure 3 shows in three dimensions the configuration of holes DH01 to DH04 formed at the four drilling points indicated in the drilling data. Each hole is represented by a long, thin bar, and the multiple sections that make up each bar represent the drilling sections for each lot. The shading of each section indicates the drilling time for each lot. The longer the drilling time, the darker the color, and the shorter the drilling time, the lighter the color. In general, the drilling sections of rods with longer drilling times tend to be in harder ground, and the drilling sections of rods with shorter drilling times tend to be in softer ground.

[0023] The drilling data may include information obtained from the drilling survey, such as the drilling point for each hole, the drilling time and drilling section for each rod, the drilling direction for each hole, and the properties of the discharged material for each rod. The properties of the discharged material include the color and amount of slime or return water. Slime or return water is a mixture of water injected during ground excavation and the excavated soil and sand. The drilling point includes the three-dimensional coordinates of one or both of the drilling start and end points. All of this information is obtained by drilling using a drill jumbo with basic functions. Therefore, this embodiment contributes to low-cost and simple forward exploration.

[0024] The data setting unit 126 may acquire boring data separately from the drilling data. The drilling data may also include boring data. The boring data is data indicating information such as the drilling section and lithology at a certain drilling point. The boring data may be acquired at the same time as the drilling data, including the drilling time for each rod, or may be acquired separately. Figure 3 further illustrates boring data AB. The boring data AB is acquired from a drilling point separate from holes DH01-DH04. As described below, the boring data AB may be used to identify boundaries of geological changes or changes in rock strength by associating the change in lithology with the change in drilling time between rods. Information on the properties of the discharged material may be referenced when associating the rod drilling time with the lithology.

[0025] Next, an example of the functional configuration of the model processing unit 122 according to this embodiment will be described. Fig. 2 is a schematic block diagram showing an example of the functional configuration of the model processing unit 122 according to this embodiment. The model processing unit 122 includes a change point identifying unit 122a, a boundary surface identifying unit 122b, and a stratum identifying unit 122c.

[0026] The change point identification unit 122a refers to the drilling data to identify the drilling point and drilling direction for each hole, and to identify the drilling section and drilling time for each rod for each hole. The change point identification unit 122a identifies as a change point the boundary between rods where the amount of change in drilling time between adjacent rods in the drilling section becomes greater than a predetermined threshold value for the amount of change. The drilling section is a section where the drilling surface has moved due to excavation during the drilling time.

[0027] In the example of Figure 3, the boundary between the drilling section with a long drilling time for hole DH01 and the drilling section with a significantly short drilling time is identified as change point TP01. The boundary between the drilling section with a long drilling time for hole DH02 and the drilling section with a significantly short drilling time is identified as change point TP02. The boundary between the drilling section with a long drilling time for hole DH03 and the drilling section with a significantly short drilling time is identified as change point TP03. It can be inferred that the stratum located in the drilling direction from each change point is a different stratum that is softer than the stratum located in the opposite direction.

[0028] The boundary surface identification unit 122b identifies, for each of three or more drilling points, a surface passing through a change point where the change trend in drilling time is common as a boundary surface. The change trend in drilling time includes the distinction between an increase and a decrease in drilling time. The change trend in drilling time may include the degree of increase or decrease. This increase or decrease corresponds to the above-mentioned amount of change or its threshold value. The change trend in drilling time may include a reference value or range of the drilling time for each rod in the stratum related to the change.

[0029] In the example of Figure 4, the plane passing through the change points TP01 to TP03 discovered for holes DH01 to DH03 is identified as the boundary surface BS. At each of the change points TP01 to TP03, the drilling time in the adjacent drilling section in the drilling direction is significantly shorter than the drilling time in the adjacent drilling section in the opposite direction. Therefore, the boundary surface BS is identified as the boundary surface where the stratum transitions to a softer layer in the drilling direction.

[0030] Generally, the number of change points found at each drilling point is not limited to one, but can be two or more. Change points are found on the boundary surface of adjacent strata, and the drilling time for each rod is roughly the same within the common strata. Therefore, the boundary surface identification unit 122b can identify, for each drilling point, a surface that passes through three or more change points that have a common change trend in drilling time in drilling sections adjacent in the excavation direction. The stratum specifying unit 122c can specify, as a layer, a space sandwiched between the boundary surface specified by the boundary surface specifying unit 122b and a newly specified boundary surface adjacent to the excavation direction.

[0031] In the example of Figure 5, the boundary surface identification unit 122b identifies as the first boundary surface BS01 a surface passing through all of the change points TP11, TP12, and TP13 where the decrease in drilling time is greater than a predetermined threshold value as a change trend in the drilling time for each drilling point in the excavation direction.The boundary surface identification unit 122b identifies as the second boundary surface BS02 a surface passing through all of the change points TP22, TP22, and TP23 that appear next in the excavation direction of the change points TP12, TP12, and TP13 where the increase in drilling time is greater than a predetermined threshold value as a change trend in the drilling time for each drilling point in the excavation direction.The stratum identification unit 122c can then identify the layer WL sandwiched between the first boundary surface BS01 and the second boundary surface BS02.The layer WL is inferred to be a layer softer than its surroundings.

[0032] Furthermore, the boundary surface identification unit 122b may identify a third boundary surface (not shown) that passes through all of the change points where the increase in drilling time is greater than a predetermined increase threshold after the second boundary surface. In this case, the stratum identification unit 122c can identify the layer sandwiched between the second boundary surface and the third boundary surface.

[0033] The tendency of change in drilling time relative to the excavation direction may differ depending on the hardness and softness of the ground and the state of the geology. For example, contrary to the example in Figure 5, the boundary surface identification unit 122b may identify a first boundary surface that passes through all change points where the increase in drilling time is greater than a predetermined threshold value, and then a second boundary surface that passes through all change points where the decrease in drilling time is greater than a predetermined threshold value. The identified layer is inferred to be harder than its surroundings.

[0034] The stratum identification unit 122c may determine the properties of the identified stratum based on the drilling time of the rod for the drilling section included in the stratum. For example, the stratum identification unit 122c may determine a stratum including a drilling section with an average drilling time of 300 seconds or more as a hard stratum. For example, the stratum identification unit 122c may determine a stratum including a drilling section with an average drilling time of less than 120 seconds as a soft stratum.

[0035] The display processing unit 124 may construct a display screen that shows the three-dimensional shape of the surface or layer identified by the model processing unit 122, and cause the constructed display screen to be displayed on the display unit 18. Furthermore, the display processing unit 124 may construct the display screen by further superimposing the three-dimensional shape of part or all of the drilled hole.

[0036] Thus, the display processing unit 124 and the display unit 18 visualize the three-dimensional shapes of the layers and excavation route sandwiched between the plane passing through the change point or adjacent planes. The positional relationship between these planes or layers and the hole is easily conveyed to the user viewing the display screen. For example, a partial hard layer in a weak rock mass is displayed. The user can intuitively grasp the positions of the boundary surface between a hard layer and a soft layer, the boundary surface between a soft layer and another hard layer, the strike, dip, thickness, and orientation relationship (e.g., flow grain, index grain) of the soft layer. Because soft layers are at high risk of collapse, information such as their position and orientation is useful for considering the need for reinforcement work or the expansion of safety measures, and the methods for implementing such work. The display processing unit 124 may display each layer and excavation route using different display patterns (e.g., color tones, patterns, etc.).

[0037] If the drilling data includes information on the properties of the discharged material, the display processing unit 124 may associate the information with the drilling section for each rod and display the information on the display screen on the display unit 18. Depending on the rock facies, the strength may not be determined based on the drilling time alone, so referring to the properties of the discharged material facilitates more accurate evaluation. For example, although natural ground consisting mainly of clay layers is soft, the drilling time may be extended due to the collapse of the hole wall, so the strength of the layer may not be determined based on the drilling time alone. The stratum identification unit 122c may also be configured with correspondence data indicating the correspondence between the pair of the discharged material properties, the drilling time, and the layer properties. The stratum identification unit 122c may refer to the correspondence data and determine the properties of the layer based on the properties of the drilling section included in the identified stratum and the drilling time.

[0038] Next, the procedure from the drilling survey to the acquisition of drilling data will be described. Fig. 6 is a flowchart illustrating the drilling data acquisition procedure according to this embodiment. (Step S102) Set three or more drilling start points for the drilling survey. Survey the coordinates and drilling direction of the set drilling start points. Surveying the drilling start points may be done before or after the drilling survey. If surveying is done before the drilling survey, mark that location as the drilling start point. The drilling direction is surveyed after drilling begins (for example, when drilling with the first rod). The azimuth and inclination of the hole formed by drilling is obtained as the drilling direction. The data setting unit 126 of the information processing device 10 sets the coordinates and drilling direction for each drilling start point, and then proceeds to the processing of loop L104.

[0039] (Loop L104) The processing of loop L104 is processing related to drilling survey. The processing of loop L104 includes the processing of loop L106. The processing of loop L104 is repeated until the processing of loop L106 is completed for all set drilling start points. After that, the processing proceeds to step S114. (Loop L106) The processing of loop L106 is processing to acquire data on the drilling status at each drilling start point. The processing of loop L106 includes the processing of steps S110 and S112. The processing of loop L106 is repeated until the drilling surface reaches a predetermined excavation length from the drilling start point.

[0040] (Step S110) An unused rod is placed at the tip of the arm of the drill jumbo, and the drill jumbo inserts the rod into the hole. (Step S112) The drill jumbo rotates the rod while contacting the drilling surface to perform drilling, and then the process returns to step S110.

[0041] During this time, the drilling time is recorded for each rod and the amount and properties of the discharged material are observed. The drill jumbo also records the distance traveled by the drilling face for each rod as the length of the drilling section. A timer is used to measure the drilling time. A flow meter and a color meter, for example, may be used to observe the discharged material. These measuring instruments may be built into the drill jumbo or may be separate from the drill jumbo. The amount and color of the discharged material may be evaluated visually by an operator. Note that drilling may be interrupted due to obstacles, such as the collapse of the hole wall or the accumulation of waste material. The time during which drilling is interrupted and the time required for inserting and withdrawing the rod are deducted from the measured drilling time.

[0042] (Step S114) The data setting unit 126 generates drilling data including information on the coordinates of the drilling start point, the excavation direction, the drilling time for each rod, the drilling section, and the properties of the discharged material. The data setting unit 126 saves the generated drilling data. Then, the processing of FIG. 6 ends.

[0043] Next, an example of a series of information processing procedures from visualization of drilling data to visualization of boundary surfaces and layers will be described. Fig. 7 is a flowchart illustrating the information processing procedures according to this embodiment. (Step S202) The display processing unit 124 of the information processing device 10 creates a display image that three-dimensionally shows the arrangement of holes formed by drilling at three or more drilling positions based on the drilling data, and displays (visualizes) it on the display unit 18. The area representing the holes may also show depth divisions for each rod.

[0044] (Step S204) The change point identification unit 122a refers to the drilling data and identifies as a change point the boundary between rods whose drilling sections change by more than a predetermined change threshold value for each of the three or more drilling points. (Step S206) The boundary surface specifying unit 122b specifies, for each of the three or more drilling points, a surface passing through a change point having a common change trend in the drilling time as a boundary surface. (Step S208) The boundary surface specifying unit 122b specifies a layer sandwiched between two boundary surfaces adjacent in the drilling direction. (Step S210) The display processing unit 124 constructs a display screen that three-dimensionally shows the shape of the identified boundary surface or layer, and displays the constructed display screen on the display unit 18. Thereafter, the processing of FIG. 7 ends.

[0045] In the above description, the information processing device 10 is mainly applied to forward exploration related to the construction of mountain tunnels, but this is not a limitation. The information processing device 10 may be applied not only to tunnel construction but also to the construction or planning of other types of construction, and may also be applied to the creation or editing of new geological models. Furthermore, these applications can be performed regardless of whether construction is being carried out.

[0046] In the above explanation, the boundary surface is determined based on the drilling conditions at three or more drilling points by referring to the drilling data, but the present invention is not limited to this. The model processing unit 122 according to this embodiment may also determine the boundary surface based on the drilling conditions at two or more drilling points and the classification of the stratum at one or more drilling points by referring to the drilling data and the boring data.

[0047] More specifically, the change point identification unit 122a refers to the drilling data and identifies as a change point the boundary between rods where the change in drilling time between adjacent rods in the drilling section for each of two or more drilling points is greater than a predetermined change amount threshold. The boundary surface identification unit 122b determines, for each of two or more drilling points, a first-type change point, which is a change point with a common change trend in drilling time, and identifies, by referring to the boring data, a second-type change point at which a change in rock facies corresponding to that change trend occurs. Here, for example, setting data indicating a reference value for drilling time for each rock facies is set in advance in the boundary surface identification unit 122b. By referring to the setting data, the boundary surface identification unit 122b identifies reference values ​​for drilling time that match or are close to the drilling time before and after the change at the identified first-type change point, and identifies the rock facies corresponding to each identified reference value. The boundary surface identification unit 122b can then compare the boundaries of the identified rock facies with the boring data to identify second-type change points corresponding to the first-type change points.

[0048] The boundary surface specifying unit 122b can determine a boundary surface that passes through two or more first type change points and one or more second type change points. The boundary surface specifying unit 122b may specify a layer sandwiched between two boundary surfaces adjacent in the drilling direction. The display processing unit 124 may construct a display screen that shows the identified boundary surface or layer shape in three dimensions, and cause the display unit 18 to display the constructed display screen.

[0049] As described above, the information processing device 10 of this embodiment is equipped with a model processing unit 122 that refers to drilling data indicating the drilling time and drilling section for each rod for each drilling point, identifies change points where the change in drilling time between rods is greater than a predetermined change threshold, and determines a boundary surface passing through change points where the change trend in drilling time is common between three or more drilling points. This configuration identifies the points where the drilling time for each rod changes significantly, and determines the boundary surface that passes through the common change point of the drilling time change trend between drilling points. Since the determined boundary surface is estimated to be the boundary surface of different strata, the ground structure can be easily and economically derived using drilling data obtained by drilling work using a general rock drill.

[0050] The information processing device 10 of this embodiment is equipped with a model processing unit 122 that refers to drilling data indicating the drilling time and drilling section for each rod for each drilling point, identifies change points where the change in drilling time between rods is greater than a predetermined change threshold, and refers to drilling data indicating the classification of stratum or hardness at one or more drilling points to determine a boundary surface that passes through a first type change point where the change trend in drilling time is common between two or more drilling points and a second type change point where a change in stratum or hardness occurs corresponding to the change trend. This configuration identifies change points where the amount of change in drilling time for each rod is significant, and determines a boundary surface that passes through a first-class change point where the change trend in drilling time is common between drilling points and a second-class change point where a change in lithology corresponding to that change trend occurs. Because the determined boundary surface is estimated to be the boundary surface of different strata, the ground structure can be derived simply and economically using drilling data obtained by drilling work with a general rock drill and existing boring data.

[0051] The information processing device 10 may also include a display processing unit 124 that causes the display unit 18 to display the shape of the layer sandwiched between the identified boundary surface or adjacent boundary surfaces in the excavation direction. This configuration allows visualization of the ground structure in the direction of excavation, which is easily derived. The derived ground structure is provided intuitively at the construction site in a timely manner, which contributes to the assessment of possible risks and the formulation of safety improvements.

[0052] The model processing unit 122 may also identify a first boundary surface passing through three or more change points and a second boundary surface passing through the change points related to the first boundary surface and adjacent change points in the excavation direction, and identify a layer sandwiched between the first boundary surface and the second boundary surface. Also, the model processing unit 122 may identify a first boundary surface passing through two or more first-type change points and one or more second-type change points, and a second boundary surface passing through the change points related to the first boundary surface and adjacent change points in the excavation direction, and identify a layer sandwiched between the first boundary surface and the second boundary surface. This configuration allows specific layers sandwiched between adjacent boundary surfaces to be derived simply and economically.

[0053] The model processing unit 122 may also determine the properties of a layer sandwiched between adjacent boundary surfaces based on the drilling time of the rod for that layer. According to this configuration, the properties of the identified layer are estimated based on drilling data obtained by drilling work using a typical rock drill.

[0054] The information processing device 10 may include a data setting unit 126 that sets a threshold value for the amount of change in excavation time for each rod in response to an operation. This configuration allows users, such as field engineers, to set the threshold value for the change in drilling input energy used to determine the change point. Furthermore, users present at the construction site can set the threshold value for the change in drilling input energy depending on the situation at the construction site. Therefore, even when a geological engineer is not present, adjustments to construction plans or design changes can be made smoothly. This reduces labor and improves productivity.

[0055] Although the embodiments of the present application have been described in detail above with reference to the drawings, the specific configuration is not limited to this embodiment, and includes designs within the scope of the gist of the present invention. For example, the information processing device 10 according to the present embodiment may be configured to include dedicated hardware or a computer system. The computer system may include hardware such as a processor and a storage medium, and software including various programs. The processor may read a predetermined program stored in advance in a storage medium and execute the read program to realize the functions of each unit in cooperation with the storage medium and other hardware. In other words, the term "unit" used herein refers to a unit that processes at least one function or operation. Here, "executing a program" refers to executing a process instructed by an instruction written in a program. The processor may include, for example, a central processing unit (CPU). The processor may also include a different type of arithmetic circuit than a CPU, such as an application-specific integrated circuit (ASIC) or a field programmable gate array (FPGA). [Explanation of symbols]

[0056] 10...information processing device, 12...control unit, 14...communication unit, 16...input unit, 18...display unit, 122...model processing unit, 122a...change point identification unit, 122b...boundary surface identification unit, 122c...stratum identification unit, 124...display processing unit, 126...data setting unit

Claims

1. For each drilling point, refer to the drilling data indicating the drilling time and drilling section for each rod, and identify change points where the change in drilling time between rods is greater than a predetermined change threshold; A model processing unit that determines a boundary surface passing through a change point where the change trend of the drilling time is common among three or more drilling points An information processing device comprising:

2. For each drilling point, refer to the drilling data indicating the drilling time and drilling section for each rod, and identify change points where the change in drilling time between rods is greater than a predetermined change threshold; Refer to drilling data indicating the formation or hardness classification at one or more drilling locations; A model processing unit that determines a boundary surface that passes through a first type change point where the change trend of the drilling time is common between two or more drilling points and a second type change point where a change in the stratum or hardness corresponding to the change trend occurs. An information processing device comprising:

3. a display processing unit that displays on a display unit the shape of the layer sandwiched between the boundary surfaces or adjacent boundary surfaces in the drilling direction; 3. The information processing device according to claim 1.

4. The model processing unit a first boundary surface passing through the change point; Identifying a second boundary surface passing through the change point related to the first boundary surface and the change point adjacent to the change point in the drilling direction; Identifying a layer sandwiched between the first boundary surface and the second boundary surface The information processing device according to claim 3 .

5. The model processing unit The properties of the layer are determined based on the drilling time of the rod related to the layer. The information processing device according to claim 4 .

6. A data setting unit is provided to set the threshold value of the amount of change in response to an operation.

3. The information processing device according to claim 1.

7. The information processing device A step of referring to drilling data indicating the drilling time and drilling section for each rod for each drilling point, and identifying a change point where the change in drilling time between rods is greater than a predetermined change threshold; A step of determining a boundary surface passing through a change point where the change trend of the drilling time is common among three or more drilling points. Information processing methods.

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