Information processing apparatus, information processing method, and program

Abstract

To increase the efficiency of drilling work while reducing the amount of explosive.SOLUTION: The drilling pattern designing unit determines a drilling line that defines a region separated by one pitch from an outer edge of a core removal range set on a face surface, allocates drilling positions at intervals of one pitch on the drilling line, calculates a minimum resistance line that is a distance affected by blasting under a certain amount of explosive based on a strength distribution of the ground on the face surface, and calculates a pitch based on the minimum resistance line. The embodiments of the present application can be realized in any form such as an information processing apparatus, an information processing method, and a program.SELECTED DRAWING: Figure 1

Description

[Technical Field]

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

[0002] Tunnel excavation work involves the processes of drilling and blasting, and is typically carried out using a drilling machine (see Patent Document 1). A tunnel drilling machine is also called a drill jumbo. A drill jumbo has a boom and a platform, and the platform performs tasks such as adjusting the position of the boom and loading explosives into the drilled hole. The boom is also called an excavation arm. The excavator performs drilling work according to a predetermined blasting pattern. The blasting pattern corresponds to position control information including the drilling position on the face when drilling a hole in the face.

[0003] Furthermore, as tunnels become larger in cross section and longer in distance, shorter construction periods are expected. However, coupled with a worsening labor shortage, there is a tendency for work delays to occur frequently. Optimizing blasting patterns is expected to streamline construction work. Blasting pattern optimization is considered one of the problems for which no set solution has been proposed, and attempts have been made to use randomized selection algorithms and machine learning models. Randomized selection algorithms are expected to derive better patterns as the calculation time increases, but they are not necessarily suitable for the procedure of blasting in order from the core removal range in clearing.

[0004] Attempts have been made to apply machine learning models to problems such as overbreak prediction and optimization of explosive amounts based on drilling energy values. Models used include genetic algorithms (GA) and improved support vector regression (ISVR). [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Publication No. 2020-183647 Summary of the Invention [Problem to be solved by the invention]

[0006] However, methods using machine learning models require prior training of the model. However, because they are required to handle a wide variety of construction sites, it is sometimes difficult or impossible to obtain enough training data to obtain sufficient estimation accuracy. Furthermore, optimizing the amount of explosives does not necessarily lead to optimizing the drilling pattern. Even if a drilling pattern requires a small amount of explosives, it may contain unnecessary holes.

[0007] The present application has been made in consideration of the above circumstances, and one of its objectives is to improve the efficiency of drilling work while reducing the amount of explosives used. [Means for solving the problem]

[0008] (1) One aspect of the present application is an information processing device that includes a drilling pattern design unit that determines a drilling line that defines an area spaced at intervals of one pitch from the outer edge of a core-removal range set on a working face, and assigns drilling positions at intervals of one pitch on the drilling line, and that calculates a minimum resistance line, which is the distance at which blasting affects a given amount of explosives based on the strength distribution of the ground at the working face, and calculates the pitch based on the minimum resistance line.

[0009] (2) One aspect of the present application is an information processing method in which an information processing device determines a drilling line that defines an area spaced at one pitch from the outer edge of a core-removal range set on a working face, assigns drilling positions at intervals of one pitch on the drilling line, calculates a minimum resistance line, which is the distance at which blasting affects a certain amount of explosives based on the strength distribution of the ground on the working face, and calculates the pitch based on the minimum resistance line. [Effects of the Invention]

[0010] According to the embodiment of the present application, it is possible to make drilling work more efficient while reducing the amount of explosives used. [Brief explanation of the drawings]

[0011] [Figure 1] 1 is a schematic block diagram illustrating an example of a functional configuration of an information processing device according to an embodiment of the present invention. [Figure 2] 10 is a flowchart illustrating a hole-drilling pattern design process according to the present embodiment. [Figure 3] 10 is a flowchart illustrating a method for determining a pitch in the height direction according to the present embodiment. [Figure 4] FIG. 10 is a diagram illustrating an example of setting a pitch in the height direction. [Figure 5] 10 is a flowchart illustrating a method for determining a core removal pattern according to the present embodiment. [Figure 6] FIG. 10 is a diagram showing an example of setting a core removal pattern. [Figure 7] 10 is a flowchart illustrating a method for determining horizontal pitch according to the present embodiment. [Figure 8] FIG. 10 is a diagram illustrating an example of setting a horizontal pitch. [Figure 9] 10 is a flowchart illustrating a method for determining a core hole pattern according to the present embodiment. [Figure 10] FIG. 10 is a diagram showing an example of setting a core removal pattern. [Figure 11] 10 is a flowchart illustrating a method for calculating multi-directional pitch according to the present embodiment. [Figure 12] FIG. 10 is a diagram illustrating an example of multi-directional pitch settings. [Figure 13] 1 is a flowchart illustrating a method for determining a drilling line according to an embodiment of the present invention. [Figure 14] An explanatory diagram showing a method for determining a drilling line. [Figure 15] 10 is a flowchart illustrating a method for setting a payment pattern according to the present embodiment. [Figure 16]FIG. 10 is a diagram showing an example of setting a hole drilling position. DETAILED DESCRIPTION OF THE INVENTION

[0012] This embodiment will be described below with reference to the drawings. Tunnel excavation work according to this embodiment involves blasting work. Blasting work includes the processes of drilling, charging, and blasting. Drilling is the process of forming a hole at a predetermined drilling position for filling with explosives. Charge charging is the process of filling the formed hole with a certain amount of explosives. Blasting is the process of detonating the charged explosives.

[0013] The information processing device 10 according to this embodiment executes a procedure for determining the distribution of multiple drilling positions on a tunnel face at a construction site. The information processing device 10 determines a drilling line that defines an area spaced at a predetermined pitch from the outer edge of a core-removal range set on the face. The information processing device 10 allocates drilling positions at predetermined intervals on the determined drilling line. The pitch is determined based on the line of least resistance. The line of least resistance is the distance affected by blasting with a certain amount of explosives based on the ground strength distribution at the face.

[0014] Next, an example of the functional configuration of the information processing device 10 according to this embodiment will be described. Fig. 1 is a schematic 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 realized 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.

[0015] The control unit 12 performs processing and control to realize various functions of the information processing device 10. The control unit 12 includes a data acquisition unit 122, a hole drilling pattern design unit 124, and an output processing unit 126. The hole drilling pattern design unit 124 includes a core drilling pattern design unit 124a, a core drilling surrounding pattern design unit 124b, and a clearing pattern design unit 124c.

[0016] The data acquisition unit 122 acquires data relating to various processes and sets the acquired data in the hole drilling pattern design unit 124 . The data acquisition unit 122 acquires, for example, arrangement data indicating the arrangement of the face and strength distribution data indicating the strength distribution of the ground at the construction site including the face. The data acquisition unit 122 outputs the acquired arrangement data and strength distribution data to the drilling pattern design unit 124. Dynamic tensile strength, for example, is used as an index indicating ground strength. In general, the higher the dynamic tensile strength of ground, the more difficult it is to fracture, and the lower the dynamic tensile strength of ground, the more easily it tends to fracture.

[0017] The data acquisition unit 122 acquires other parameters required for designing drilling patterns. The data acquisition unit 122 acquires, for example, a blasting pattern, an excavation length, etc. A blasting pattern refers to an indication of the ground properties, and is also called an excavation pattern. Ground properties include, for example, typical values ​​such as geology and ground hardness as elements. A blasting pattern may be associated with a ground classification, and further with a construction policy according to that ground classification and various parameters related to the ground properties. An excavation length is the length excavated by one blasting.

[0018] The data acquisition unit 122 receives various types of data from other devices using, for example, the communication unit 14. The data acquisition unit 122 may generate some of the data based on an operation signal input from the input unit 16. The data acquisition unit 122 may read data that is generated in advance and saved by executing a separate program (for example, a design support tool) in its own device.

[0019] The drilling pattern design unit 124 designs a drilling pattern based on the data acquired by the data acquisition unit 122. The drilling pattern indicates the distribution of drilling positions on the working face. The drilling pattern may include either or both of the insertion angle and drilling sequence for each drilling position. The insertion angle corresponds to the angle between the drilling direction and the working face. The excavation process can be broadly divided into coring and clearing. Coring is the first blasting performed on the working face. Clearing is the blasting performed after coring to collapse the ground to the outer edge of the working face. Depending on the coring method, clearing may be performed in different modes around the core and the surrounding area. For example, when a V-cut is used for coring, the insertion angle, which is set at an angle to the working face in the area around the core, approaches an angle perpendicular to the working face as it moves away from the core area. The following explanation mainly focuses on the case where a V-cut is used for coring.

[0020] The hole drilling pattern design unit 124 includes a core drilling pattern design unit 124a, a core drilling surrounding pattern design unit 124b, and a clearance pattern design unit 124c. The core drilling pattern design unit 124a determines the vertical pitch of the drilling positions based on the line of minimum resistance and the height of the face. This determines the height distribution of candidate drilling positions. Here, the vertical direction is parallel to the face and perpendicular to the horizontal direction. The vertical direction corresponds to or approximates the up-down or vertical direction. The core drilling pattern design unit 124a sets candidate drilling positions at a fixed interval on both sides of the center of the face in the excavation direction for each determined height. The line of minimum resistance at each height is the distance at which the ground is expected to be destroyed by the blasting effect with a certain amount of explosives. The core drilling pattern design unit 124a can calculate the line of minimum resistance based on the ground strength distribution shown in the strength distribution data using known methods.

[0021] The core pattern design unit 124a determines the number of drilling positions so that the core charge exceeds the reference value. The core charge is the amount of explosive required for core removal. The core pattern design unit 124a calculates the reference core charge based on, for example, a predetermined excavation length and a conversion distance. The reference core charge corresponds to the reference value of the core charge. The conversion distance refers to the distance affected by the blasting of explosives per mm of powder diameter. The core pattern design unit 124a can calculate the conversion distance based on the predetermined explosive detonation pressure and the dynamic tensile strength indicated in the strength distribution data. The core pattern design unit 124a can calculate the core charge by multiplying the number of drilling positions by the predetermined charge amount for each drilling position. Note that if the coring method is V-cut, the number of drilling positions will be an even number. The coring pattern design unit 124a identifies the minimum number of drilling positions that provide a coring dose that exceeds the reference value of the coring dose as the number of drilling positions.The coring pattern design unit 124a can determine a group of adjacent drilling position candidates that cover the center of the face from the height distribution of the candidate drilling positions as a coring pattern that indicates the drilling positions related to coring.The coring pattern design unit 124a saves coring pattern data that indicates the determined coring pattern.

[0022] The core drilling pattern design unit 124b determines the drilling positions located within a predetermined range to the left and right of the core drilling range in the excavation direction as the core drilling pattern. The core drilling pattern design unit 124b selects the height of the highest drilling position from the distribution of drilling positions that make up the core drilling pattern as the reference height. The core drilling pattern design unit 124b determines the horizontal pitch of the drilling positions based on the minimum resistance line and the width of the face at the reference height. Here, the horizontal direction corresponds to the direction parallel to the face and the horizontal plane. The horizontal direction is left or right in the excavation direction. The core drilling pattern design unit 124b determines the horizontal pitch of the drilling positions by using the width of the face instead of the height of the face in the method of determining the height pitch. The core removal pattern design unit 124b specifies the positions one pitch away from the center of the face on both the left and right sides as the left and right ends of the core removal range, and determines the maximum and minimum values ​​of the height of the drilling position as the upper and lower ends of the core removal range, respectively. In this example, the shape of the core removal range is rectangular.

[0023] The core hole surrounding pattern design unit 124b determines the positions shifted horizontally by one pitch to the left and right from the hole drilling position for core hole removal within a predetermined width range (sometimes referred to as the "core hole periphery" in this application) as the hole drilling positions for the core hole surrounding. The core hole surrounding pattern design unit 124b determines the insertion angle for the hole drilling position so that the farther away from the core hole range the angle is, the closer to a right angle it is to the insertion angle for the hole drilling position for core hole removal. For each hole drilling position set around the core hole, the core hole surrounding pattern design unit 124b can determine the set of hole drilling position and insertion angle as a core hole surrounding pattern. The core hole surrounding pattern design unit 124b saves core hole surrounding pattern data indicating the determined core hole surrounding pattern.

[0024] The sweeping pattern design unit 124c determines a drilling line that defines an area spaced one pitch from the outer edge of the core removal area. When the core removal area is rectangular as described above, the sweeping pattern design unit 124c creates a drilling line consisting of curves spaced one pitch from each vertex of the core removal area and curves spaced one pitch from each edge. More specifically, based on the ground strength distribution indicated in the strength distribution data, the sweeping pattern design unit 124c calculates a minimum resistance line from each point on the drilling line to be processed in the normal direction, defines the distance obtained by multiplying the calculated minimum resistance line by a preset correction coefficient, and determines the identified position as a pitch. The correction coefficient is a type of parameter corresponding to the blasting pattern. For example, the harder the ground, the smaller the correction coefficient, and the softer the correction coefficient. This adjusts the pitch density according to the ground hardness. The sweeping pattern design unit 124c determines a line passing through the newly determined reference points as a new drilling line. However, in the process of determining a new drilling line, the removal pattern design unit 124c uses the outer edge of the core removal range as the initial value of the drilling line to be processed.

[0025] The clearance pattern design unit 124c assigns drilling positions along each drilling line. The clearance pattern design unit 124c assigns one drilling position at each drilling point at one pitch intervals. Based on the ground strength distribution indicated in the strength distribution data, the clearance pattern design unit 124c calculates the line of least resistance along the drilling line from the drilling position to be processed on the drilling line, and calculates the pitch by multiplying the line of least resistance by a predetermined correction coefficient corresponding to the blasting pattern. The clearance pattern design unit 124c sequentially determines new drilling positions for each position separated by the calculated pitch on the drilling line. The clearance pattern design unit 124c determines the insertion angle for the newly determined drilling position, for example, in a direction perpendicular to the face. Note that the clearance pattern design unit 124c may use the drilling positions set around the core and omit the process of determining new drilling positions around the core based on the drilling line. The clearance pattern design unit 124c stores clearance pattern data indicating the drilling position and the insertion angle for each determined drilling position.

[0026] The output processing unit 126 performs processing to output various types of data. For example, the output processing unit 126 combines newly saved core removal pattern data and cleanup pattern data to form drilling pattern data. The output processing unit 126 outputs the formed drilling pattern data to the drilling machine using the communication unit 14. The drilling machine performs drilling work in accordance with the drilling pattern indicated in the drilling pattern data input from the information processing device 10.

[0027] The output processing unit 126 may configure various display screens and generate display data showing the configured display screens. The output processing unit 126 outputs the generated display data to the display unit 18. By outputting this display data, the output processing unit 126 displays the display screen. The output processing unit 126 may configure a display screen showing, for example, the core-punching range and drilling positions determined on the face, and display it on the display unit 18.

[0028] The communication unit 14 inputs and outputs various data to and from other devices via wired or wireless communication. The communication unit 14 outputs, for example, drilling pattern data input from the output processing unit 126 to the drilling machine. The communication unit 14 may input vibration data showing the vibration waveform caused by blasting from a vibrometer installed at the construction site and output the vibration data to the data acquisition unit 122. The data acquisition unit 122 may analyze the input vibration data and estimate the distribution of dynamic tensile strength at the face. The estimated distribution of dynamic tensile strength serves as an index of the strength distribution of the ground.

[0029] 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.

[0030] 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. 1, one or both of the input unit 16 and the display unit 18 may be configured integrally as 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 integrally as a touch panel.

[0031] Next, an example of the drilling pattern design process according to this embodiment will be described below. Fig. 2 is a flowchart illustrating the drilling pattern design process according to this embodiment. (Step S102) The data acquisition unit 122 of the information processing device 10 acquires strength distribution data indicating the distribution of dynamic tensile strength on the working face. (Step S104) The data acquisition unit 122 refers to the strength distribution data and calculates the converted core distance based on the dynamic tensile strength at the center of the face and the detonation pressure of the explosive. The data acquisition unit 122 determines the converted payout distance by multiplying the converted core distance by a predetermined conversion coefficient.

[0032] (Step S106) The coring pattern design unit 124a determines the pitch in the height direction by referring to the strength distribution data and the layout data indicating the layout of the face. The method for determining the pitch in the height direction will be described later. (Step S108) The coring pattern design unit 124a determines a coring pattern based on the arrangement of the face and the pitch in the height direction. The method for determining the coring pattern will be described later.

[0033] (Step S110) The core-cutting area pattern design unit 124b determines the horizontal pitch by referring to the intensity distribution data and the layout data indicating the layout of the face. The method for determining the horizontal pitch will be described later. As described above, the core-cutting area is determined in this process. (Step S112) The core hole surrounding pattern design unit 124b determines a pattern around the core hole based on the arrangement of the face and the horizontal pitch. A method for determining a pattern around the core hole will be described later.

[0034] (Step S114) The sweep pattern design unit 124c refers to the intensity distribution data, calculates pitches in multiple directions starting from each point in the core removal range, and determines auxiliary points at intervals of one pitch. A method for calculating pitches in multiple directions will be described later. (Step S116) The removal pattern design unit 124c determines a drilling line that passes through auxiliary points that have a common pitch number from the core removal range. The method for determining the drilling line will be described later. (Step S118) The sweeping pattern design unit 124c sets drilling positions at one pitch intervals on each drilling line. The sweeping pattern design unit 124c prioritizes drilling positions closer to the core removal range, and determines the drilling order for each drilling position in the order of arrangement on the drilling line as a sweeping pattern. The method for setting the sweeping pattern will be described later.

[0035] (Step S120) The output processing unit 126 outputs the blasting pattern including the core removal pattern, the pattern around the core removal, and the clearing pattern to an external device, for example, a drilling machine. After that, the process of FIG. 2 ends.

[0036] Next, a method for determining the pitch in the height direction will be described with reference to Fig. 3, which is a flowchart illustrating an example of the method for determining the pitch in the height direction. (Step S202) The core drilling pattern design unit 124a determines the number of lines in the height direction based on the minimum resistance line, the height of the face, and the blasting pattern at the construction site. More specifically, the core drilling pattern design unit 124a refers to the strength distribution data and calculates the minimum resistance line based on the dynamic tensile strength at each point on the center line oriented in the height direction at the center of the face. The core drilling pattern design unit 124a calculates the pitch by multiplying the minimum resistance line by a correction coefficient corresponding to the blasting pattern. The core drilling pattern design unit 124a accumulates pitches one by one from the bottom of the face, sequentially calculating the cumulative height and counting the number of accumulated pitches. The core drilling pattern design unit 124a determines the number of pitches that gives the first cumulative height that exceeds the height of the face as the number of lines. For the face TF illustrated in Figure 4(a), the number of lines is determined to be seven.

[0037] (Step S204) The core drilling pattern design unit 124a adjusts the pitch so that the product of the minimum resistance line and the converted distance for core drilling on each line is evenly distributed in the height direction of the face. In the example of Figure 4(b), the pitch is adjusted so that it is approximately equal between lines. The height of the base of each line becomes a candidate for the height of the hole drilling position for core drilling. Then, the processing of Figure 3 is terminated.

[0038] Next, a method for determining a core removal pattern will be described with reference to Fig. 5, which is a flowchart illustrating a method for determining a core removal pattern. (Step S222) The coring pattern design unit 124a determines the coring position based on the pitch in the height direction. More specifically, the coring pattern design unit 124a determines the midpoint of the base of the highest line among the bases of lines lower than the center of the face as the center point of the coring.

[0039] (Step S224) The core drilling pattern design unit 124a determines the drilling positions as positions a predetermined distance to the left and right of the center point of the core drilling position. In the example of Figure 6(a), two drilling positions are set horizontally, 10 cm apart from the center point, to achieve a V-cut. The core drilling pattern design unit 124a then sets the insertion angle for each drilling position to 60 degrees. However, the drilling direction for drilling positions located to the left of the center point of the core drilling is tilted 30 degrees to the left with respect to the normal direction of the face. The drilling direction for drilling positions located to the right of the center point is tilted 30 degrees to the right with respect to the normal direction of the face. The insertion angle is set so that the holes open symmetrically on the left and right of the center point relative to the free surface. Setting this insertion angle promotes the collapse of the ground in front of the drilling surface by blasting.

[0040] (Step S226) The coring pattern design unit 124a calculates the reference core amount of explosive using a predetermined formula based on the predetermined excavation length and the converted distance of the explosive. Here, the coring pattern design unit 124a calculates the converted distance based on the predetermined detonation pressure of the explosive and the dynamic tensile strength indicated in the strength distribution data.

[0041] (Step S228) The coring pattern design unit 124a determines the number of holes to be drilled so as to exceed the reference coring dose. Here, the coring pattern design unit 124a calculates the coring dose as the product of the predetermined charge amount for each drilling position and the number of drilling positions, and identifies the smallest even number of drilling positions that provides a coring dose exceeding the reference coring dose as the number of drilling positions. The coring pattern design unit 124a determines half the value of the identified number of drilling positions as the number of lines related to coring. Then, the coring pattern design unit 124a determines a group of a predetermined number of lines adjacent to each other with the coring position at the center as the lines related to coring. However, if the number of lines is an even number, the core drilling pattern design unit 124a determines the core drilling lines so that the number of lines above the center is one less than the number of lines below the center.For each determined line, the core drilling pattern design unit 124a determines a new drilling position at a predetermined distance to the left and right from the center of the face.

[0042] In the example of Figure 6(b), there are three lines, and a total of six drilling positions are determined symmetrically above, below, left and right from the core drilling position. The core hole pattern design unit 124a also sets the insertion angle to 60 degrees for the newly determined drilling positions. In this step, the insertion angle is also set so that the holes are symmetrically opened to the left and right of the center of the face relative to the free surface. This set of drilling positions and insertion angles is determined as the core hole pattern. After that, the processing of Figure 5 is terminated.

[0043] Next, a method for determining the horizontal pitch will be described. Figure 7 is a flowchart illustrating a method for determining the horizontal pitch. (Step S302) The core drilling pattern design unit 124b determines a reference height based on the core drilling pattern. More specifically, the highest value among the heights of the drilling positions that make up the core drilling pattern is determined as the reference height. In the example of Figure 8(a), the height from the bottom of the face to the bottom of the fifth line is the reference height.

[0044] (Step S304) The core-excavation-surrounding-pattern design unit 124b determines the number of horizontal lines based on the minimum resistance line, the height of the face, and the blasting pattern for the construction site. More specifically, the core hole surrounding pattern design unit 124b refers to the strength distribution data and calculates the minimum resistance line based on the dynamic tensile strength at each point on the horizontal line at the reference height. The core hole surrounding pattern design unit 124b calculates the pitch by multiplying the minimum resistance line by a correction coefficient corresponding to the blasting pattern. The core hole surrounding pattern design unit 124b sequentially calculates the cumulative width by accumulating one pitch at a time from the left end of the face on the horizontal line and counts the number of accumulated pitches. The core hole surrounding pattern design unit 124b determines the number of pitches that gives the cumulative width that first exceeds the right end of the face on the horizontal line as the number of lines. For the face TF illustrated in Figure 8(b), the number of lines is determined to be 12.

[0045] (Step S306) The core drilling pattern design unit 124b adjusts the pitch so that the product of the minimum resistance line and the converted distance for core drilling on each line is evenly distributed on the horizontal line of the face. In the example of Figure 8(c), the pitch is adjusted so that it is approximately equal between lines. At the boundary between each line, a position that is equal in height to one of the drilling positions for core drilling becomes a candidate for the drilling position around the core drilling. Then, the processing of Figure 7 is terminated.

[0046] Next, a method for determining the core removal area pattern will be described. Fig. 9 is a flowchart illustrating a method for determining the core removal area pattern. In the example of Fig. 9, it is assumed that an area two pitches away from the core removal area on both the left and right sides is set as the core removal area, and that the insertion angle is set to increase by 10 degrees for every pitch away from the core removal area. (Step S322) The coring pattern design unit 124b sets the height around the coreing to match the height of the hole drilling positions related to the coreing. That is, the coring pattern design unit 124b adopts the height of the hole drilling positions related to the coreing as the height of the hole drilling positions around the coreing. Then, as illustrated in FIG. 10(a), the coring pattern design unit 124b specifies a rectangular area as the coring range, with the positions one pitch away from the center of the face on both the left and right sides as the left and right ends, and the highest and lowest hole drilling positions related to the coreing as the top and bottom ends, respectively. It is expected that the ground will be fractured by the coring in the specified range, and a new free surface will appear.

[0047] (Step S324) The core removal pattern design unit 124b sets positions one pitch away from the core removal range on both the left and right as hole drilling positions, as illustrated in Fig. 10(b). The core removal pattern design unit 124b sets the insertion angle for the set hole drilling positions to be larger (for example, 70 degrees) than the insertion angle for the hole drilling positions related to core removal. (Step S326) The core removal pattern design unit 124b sets positions two pitches away from the core removal range on both the left and right as hole drilling positions, as illustrated in Fig. 10(c). The core removal pattern design unit 124b sets the insertion angle for the set hole drilling positions to be even larger (for example, 80 degrees) than the insertion angle for the hole drilling positions related to core removal.

[0048] In steps S324 and S326, the insertion angles are set so that the openings are symmetrical with respect to the free surface on the left and right sides of the center of the face. The core hole peripheral pattern design unit 124b saves the set of drilling positions and insertion angles set in steps S324 and S326 as a core hole peripheral pattern. Then, the processing of Fig. 9 is terminated. According to the example of Fig. 9, the area of ​​two pitches on the left and right of the core hole range is set as the core hole peripheral pattern, and the distribution of drilling positions within that area and the insertion angles for each drilling position are set as the core hole peripheral pattern.

[0049] Next, a method for calculating the multi-directional pitch will be described. Figure 11 is a flowchart illustrating a method for calculating the multi-directional pitch. (Step S402) The sweeping pattern design unit 124c calculates the minimum resistance line based on the dynamic tensile strength of each point on a line radiating in each direction at a predetermined angular interval, starting from each vertex of the core removal range and referring to the intensity distribution data. In the example of Fig. 12(a), the line radiating in each direction is set at 10-degree intervals. The clearing pattern design unit 124c calculates the pitch by multiplying the calculated minimum resistance line for each direction by a predetermined correction coefficient corresponding to the blasting pattern. The clearing pattern design unit 124c sets auxiliary points at positions one pitch away from each starting point. In the example of Figure 12(b), auxiliary points are set at positions one pitch and two pitches away in each direction from the upper right vertex of the core removal range.

[0050] (Step S404) The clearing pattern design unit 124c uses both ends and the midpoint of each side of the core removal range as starting points, refers to the strength distribution data, calculates the minimum resistance line based on the dynamic tensile strength at each point on the normal line of that side, and calculates the pitch by multiplying the minimum resistance line by a correction coefficient corresponding to the blasting pattern. The clearing pattern design unit 124c sets auxiliary points at positions one pitch away from each starting point on the normal line. Figure 12(c) shows an example of normal lines starting from both ends and the midpoint of each of the top, left, bottom, and right sides of the core removal range. In the example of Figure 12(d), auxiliary points are set at positions one pitch away from the starting point for each normal line. The processing of Figure 11 then ends.

[0051] Next, a method for determining a drilling line will be described. Figure 13 is a flowchart illustrating a method for determining a drilling line. The processing in Fig. 13 includes a loop L422. The loop L422 includes the processing of steps S424, S426, and S428, and is executed for adjacent auxiliary points, i.e., for each pair of the closest auxiliary points. In the example in Fig. 14(a), two adjacent auxiliary points from the auxiliary points connected in a downward rightward direction in the rightmost column and the auxiliary points connected in a downward rightward direction in the second column from the rightmost column are processed. The processing in loop L422 is repeated until there are no unprocessed auxiliary points.

[0052] (Step S424) The clearing pattern design unit 124c determines whether the number of lines counted from the core removal range for each auxiliary point that constitutes the auxiliary point group to be processed is equal. If it is determined that they are equal (step S424 YES), the process proceeds to step S426. If it is determined that they are not equal (step S424 NO), the process proceeds to step S428. (Step S426) The sweep pattern design unit 124c sets a line segment connecting the auxiliary points to be processed. (Step S428) The sweep pattern design unit 124c sets a line segment connecting an auxiliary point with a small number of lines to an auxiliary point with a large number of lines.

[0053] In the example of Fig. 14(a), the numbers of lines at the rightmost lower-right auxiliary point in the rightmost column and the next lower-right auxiliary point are 3 and 2, respectively. By the processing of step S428, a line segment connecting the next lower-right auxiliary point to the rightmost lower-right auxiliary point is set. In the example of Fig. 14(b), the pitch numbers of the upper left auxiliary point on the rightmost column and the next upper left auxiliary point are 2 and 2, respectively. A line segment connecting the two is set by the processing in step S426. By repeating the processing of loop L422, a drilling line is formed by connecting line segments connecting adjacent auxiliary points, as illustrated in Figure 14(c).

[0054] In step S424, the clearance pattern design unit 124c may count the number of pitches from the core removal range for each of the auxiliary points that make up the group of auxiliary points to be processed, and identify the nearest auxiliary point with the same number of pitches. In this case, in step S426, the clearance pattern design unit 124c sets a line segment that connects auxiliary points with the same number of pitches. Also, the processing of step S428 is omitted. This method also allows the formation of a drilling line that is made up of a series of line segments that connect auxiliary points.

[0055] Next, a method for setting a payout pattern will be described with reference to a flowchart shown in FIG. The process in Figure 15 includes a loop L442. The loop L442 includes the processes of steps S444, S446, and S448, and is executed for each drilling line. The process in loop L442 is repeated until there are no more unprocessed drilling lines.

[0056] (Step S444) The clearing pattern design unit 124c refers to the strength distribution data and calculates the line of minimum resistance based on the dynamic tensile strength at each point on the drilling line, and calculates the pitch by multiplying the line of minimum resistance by a correction coefficient corresponding to the blasting pattern. The clearing pattern design unit 124c sets the first position at a position one pitch away from one end of the drilling line. In the example of Figure 16(a), the first position is set every time it is one pitch away from the lower right end of the outermost drilling line on the face TF.

[0057] (Step S446) The clearance pattern design unit 124c sets the second position to a position that is one pitch away from the other end along the drilling line. In the example of Figure 16(b), the second position is set every one pitch away from the lower left end of the outermost drilling line of the face TF. (Step S448) The clearance pattern design unit 124c determines the midpoint on the drilling line between the first position and the second position as the drilling position, as exemplified in Fig. 16(c), and then ends the processing of Fig. 15.

[0058] In the above explanation, the V-cut is mainly used for core removal, but this is not limited to this. Other methods such as a wedge cut or a fan cut may also be used. The core removal pattern design unit 124a may determine the drilling position and insertion angle according to the procedure appropriate for each method. In addition, in a method other than the V-cut, the insertion angle for each drilling position is determined in a fixed manner or by a fixed procedure regardless of whether it is a core cutting or a clearance cutting. In that case, the core cutting surrounding pattern design unit 124b may be omitted from the information processing device 10.

[0059] The drilling pattern design unit 124 may determine the drilling order for each drilling position. For example, the drilling pattern design unit 124 determines the drilling order so that, among the drilling positions related to core removal, the higher the drilling position set, the higher the priority. The drilling pattern design unit 124 determines the drilling order so that the drilling line closest to the core removal range is given priority, and determines the order of each drilling position based on the arrangement order of each drilling line. As described above, multiple drilling lines are obtained on the face, but the drilling pattern design unit 124 may adjust the drilling order between the drilling lines so that the sum of the distances between the drilling position at the end of one drilling line and the drilling position at the beginning of another drilling line is as small as possible.

[0060] The drilling pattern design unit 124 may also determine the order of drilling positions based on other methods so that the path length of a path that passes through each of the drilling positions once is as short as possible. In this case, the drilling pattern design unit 124 may use a known path search algorithm. The drilling pattern design unit stores information on the drilling sequence determined for each drilling position in the drilling pattern data. The output processing unit 126 may output drilling pattern data, which further includes information on the drilling sequence, to the drilling machine.

[0061] In the above explanation, the pitch is determined by correcting the line of minimum resistance based on the blasting pattern, but this is not limited to this. The drilling pattern design unit 124 may calculate the pitch by multiplying the line of minimum resistance by a certain correction coefficient, assuming that the blasting pattern is predetermined. The drilling pattern design unit 124 may also calculate the pitch by multiplying the line of minimum resistance by a correction coefficient that is pre-adjusted so that the pitch becomes relatively larger the higher the height within the face. This adjusts the pitch so that it becomes sparser the higher up on the face. This is because the ground above tends to be more easily crushed by weight than the ground below.

[0062] As described above, the information processing device 10 according to this embodiment is equipped with a drilling pattern design unit 124 that determines a drilling line (i.e., a drilling line) that defines an area spaced at intervals of one pitch from the outer edge of the core-removal range set on the working face, and allocates drilling positions at intervals of one pitch on the drilling line. The drilling pattern design unit 124 calculates a minimum resistance line, which is the distance affected by blasting with a certain amount of explosives, based on the strength distribution of the ground at the working face (for example, dynamic tensile strength), and calculates the pitch based on the calculated minimum resistance line. This configuration allows the drilling positions to be distributed so that the area of ​​the face that may be crushed by blasting based on the strength of the ground is covered, and overlap of these areas is suppressed. Therefore, the drilling work is made more efficient by reducing the number of holes drilled while avoiding missed crushing by taking into account the difference in ground strength depending on the position. The amount of explosives required for the entire face can be reduced by using a predetermined amount of explosives for each hole.

[0063] Furthermore, the drilling pattern design unit 124 may prioritize drilling lines closer to the core removal range and determine the order of drilling positions based on the arrangement order on the drilling lines. According to this configuration, blasting proceeds in the order in which new free surfaces are exposed through crushing, thereby making excavation work more efficient.

[0064] In addition, the hole drilling pattern design unit 124 may set auxiliary points spaced apart from the core drilling range in different directions by one pitch, and connect auxiliary points that are the same number of pitches from the core drilling range to determine the hole drilling line. According to this configuration, the area to be crushed by blasting is searched sequentially from the core removal area.

[0065] The drilling pattern design unit 124 may determine the drilling position as the midpoint between a first position, which is a position spaced one pitch apart from one end of the drilling line, and a second position, which is a position spaced one pitch apart from the other end of the drilling line. With this configuration, the midpoint between the first position and the second position is determined as the drilling position, so that the crushing unevenness that may occur due to the first position and the crushing unevenness that may occur due to the second position can be leveled out, thereby reducing the crushing unevenness of the entire drilling line.

[0066] The drilling pattern design unit 124 may determine the vertical pitch of the drilling positions for core drilling based on the minimum resistance line and the height of the face, calculate a standard value for the core drilling amount based on a predetermined excavation length and conversion distance, and determine the number of drilling positions so that the core drilling amount, which is the total amount of agent at each drilling position for core drilling, exceeds the standard value. This configuration determines the number of drilling positions corresponding to the core-extraction amount so that it exceeds the standard value of the core-extraction amount, which is determined based on the excavation length and the converted distance. As a result, a wider range of cores is excavated than the standard core-extraction range, exposing more free surface. By reducing the number of drilling holes required for clearing, the efficiency of drilling work is improved across the entire face.

[0067] The drilling pattern design unit 124 may further refer to the blasting pattern of the ground to determine the pitch. With this configuration, the drilling positions can be determined at a pitch that corresponds to the properties of the ground at the construction site, so as to reduce the number of holes to be drilled while avoiding missing holes.

[0068] The drilling pattern design unit 124 may adjust the pitch so that the higher the position, the sparser the holes. This configuration makes it possible to reduce the number of holes that need to be drilled by taking advantage of the tendency for stones to be crushed more easily at higher positions.

[0069] 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]

[0070] 10...information processing device, 12...control unit, 14...communication unit, 16...input unit, 18...display unit, 122...data acquisition unit, 124...hole drilling pattern design unit, 124a...core removal pattern design unit, 124b...core removal surrounding pattern design unit, 124c...cleaning pattern design unit, 126...output processing unit

Claims

1. A drilling line is defined that defines an area spaced apart by one pitch from the outer edge of the core-removal range set on the face of the workpiece; a drilling pattern design unit that allocates drilling positions at intervals of one pitch on the drilling line; The hole drilling pattern design unit A minimum resistance line, which is the distance affected by blasting with a certain amount of explosives, is calculated based on the strength distribution of the ground at the face, and the pitch is calculated based on the minimum resistance line. Information processing device.

2. The hole drilling pattern design unit The order of the drilling positions is determined by the order of the drilling lines, with the drilling lines closer to the core removal range being given priority. The information processing device according to claim 1 .

3. The hole drilling pattern design unit Auxiliary points are set at intervals of one pitch in different directions from the core removal range, The drilling line is determined by connecting auxiliary points with equal pitches from the core-removing range. The information processing device according to claim 1 .

4. The hole drilling pattern design unit The midpoint between a first position, which is a position spaced apart by one pitch from one end of the drilling line, and a second position, which is a position spaced apart by one pitch from the other end of the drilling line, is determined as the drilling position. The information processing device according to claim 2 .

5. The hole drilling pattern design unit A pitch in the height direction of the drilling position for core removal is determined based on the minimum resistance line and the height of the face; Calculate the standard value of the core-extraction charge based on the predetermined excavation length and conversion distance, The number of drilling positions is determined so that the total amount of the drug per core drilled at each drilling position for the core drilling exceeds the reference value. The information processing device according to claim 1 .

6. The hole drilling pattern design unit The pitch is determined by further referring to the blasting pattern of the ground. The information processing device according to claim 1 .

7. The hole drilling pattern design unit Adjust the pitch so that it becomes sparser at higher positions The information processing device according to claim 1 .

8. To the computer A program for causing the information processing device according to claim 1 to function.

9. The information processing device A drilling line is defined that defines an area spaced apart by one pitch from the outer edge of the core-removal range set on the face of the workpiece; Allocating drilling positions at intervals of one pitch on the drilling line; A minimum resistance line, which is the distance affected by blasting with a certain amount of explosives, is calculated based on the strength distribution of the ground at the face, and the pitch is calculated based on the minimum resistance line. Information processing methods.

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