Method and system for determining charging positions of peripheral holes of tunnel face

Abstract

The invention relates to a method and system for determining charging positions of peripheral holes of a tunnel face, and the method comprises the steps: completing blasting drilling on the tunnel face, recording the drilling parameters of the drilling, and building a relation model between the drilling specific energy of blasting circulation and the actual blasting unit consumption; determining the total explosive amount of the target blasting cycle by using the relation model; calculating the total explosive amount of the peripheral holes, the explosive amount of each peripheral hole and the charge number according to the type of the drilled holes of the target blasting cycle; and determining the longitudinal charging position of each peripheral hole. According to the method, the relation model of the drilling specific energy of the blasting cycle and the actual blasting unit consumption is constructed through the drilling parameters of the drilled holes during blasting drilling, then the total explosive dosage of the target blasting cycle is accurately determined, and then the longitudinal explosive charging position of each peripheral hole is determined based on the total explosive dosage of the peripheral holes and the drilling parameters; rock mass characteristics are represented by blasting drilling measurement-while-drilling parameters, and fine charging of peripheral holes is rapidly guided according to the three-dimensional distribution characteristics of rock mass in front of a tunnel face.

Description

Technical Field

[0001] The invention relates to the technical field of tunnel blasting construction, and in particular to a method and system for determining charging positions of holes around a tunnel face. Background Art

[0002] Tunnel blasting design is usually based on the properties of the rock mass, including the strength characteristics and structural characteristics of the rock mass. Tunnels are generally long and buried deep, which leads to the staff's overly extensive characterization of the rock mass and ignores the understanding of the strength and structural characteristics of the rock mass in a small area. In addition, only a few parameters (such as rock hardness) are selected to represent the resistance of the rock mass to blasting and fragmentation, which ignores the structural characteristics of the rock mass, further reducing the possibility of fine blasting design. The blasting effect of the tunnel peripheral holes directly determines the contour shape of the tunnel. A good blasting effect can avoid the additional workload caused by over-excavation and under-excavation, so it is necessary to perform fine blasting on the peripheral holes to improve the blasting effect. In the prior art, for tunnel blasting, blasting design and determination of blasting unit consumption (the amount of explosives required to blast a unit volume of rock mass) are usually based on manual experience. This method not only has poor blasting effect, but also has low explosive utilization rate, which is easy to cause waste. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a method and system for determining the charging position of the peripheral holes of a tunnel face in view of the deficiencies of the above-mentioned prior art.

[0004] The technical solution of the present invention to solve the above technical problem is as follows: A method for determining the charging position of the peripheral holes of a tunnel face comprises the following steps:

[0005] Complete blasting drilling on the tunnel face according to the designed hole layout, record the drilling parameters of the drilling, and use the drilling parameters and historical data of the blasting cycle to establish a relationship model between the drilling specific energy of the blasting cycle and the actual blasting unit consumption;

[0006] Determining the total explosive usage of a target blasting cycle using the relationship model;

[0007] Calculate the total explosive usage of the peripheral holes, the explosive usage of each peripheral hole and the number of charges according to the type of drilling holes in the target blasting cycle;

[0008] The longitudinal charging position of each peripheral hole is determined according to the drilling parameters of each peripheral hole, the amount of explosives used in each peripheral hole and the number of charges.

[0009] The beneficial effects of the present invention are as follows: the method for charging peripheral holes of a tunnel face based on the drilling specific energy of blasting holes of the present invention constructs a relationship model between the drilling specific energy of a blasting cycle and the actual blasting unit consumption through the drilling parameters of the drilling holes during blasting drilling, thereby accurately determining the total explosive consumption of a target blasting cycle, and then determining the longitudinal charging position of each peripheral hole based on the total explosive consumption and drilling parameters of the peripheral holes, characterizing the rock mass characteristics by using the measurement parameters of the blasting drilling while drilling, and quickly guiding the fine charging of the peripheral holes according to the three-dimensional distribution characteristics of the rock mass in front of the tunnel face, thereby reducing over-excavation and under-excavation, controlling the tunnel blasting profile, and improving the blasting effect.

[0010] On the basis of the above technical solution, the present invention can also be improved as follows:

[0011] Further: the use of the drilling parameters and the historical data of the blasting cycle to establish a relationship model between the drilling specific energy of the blasting cycle and the actual blasting unit consumption specifically includes the following steps:

[0012] The drilling specific energy of each drilling is calculated according to the drilling parameters, and the calculation formula is:

[0013]

[0014] Where D is the borehole diameter, V is the drilling rate, F is the drilling pressure, N is the drill speed and T is the torque;

[0015] According to the drilling depth L of the i-th borehole i , determine the average drilling specific energy E of the ith borehole vi ;

[0016] According to the weighted average of the drilling depth of each borehole in the nth blasting cycle and the corresponding average drilling specific energy, the average drilling specific energy E of the nth blasting cycle is determined. vn , the calculation formula is:

[0017]

[0018] Among them, L i is the drilling depth of the ith borehole, E vi is the average drilling specific energy of the ith borehole, i is the number of boreholes in the nth blasting cycle;

[0019] Based on the historical data of all blasting cycles, a regression analysis was conducted to establish a regression relationship model between the average drilling specific energy of the blasting cycle and the unit consumption of explosives. The formula is as follows:

[0020] E=kf

[0021] Among them, k is the proportionality coefficient, E is the average drilling specific energy of the blasting cycle, and f is the unit consumption of explosives.

[0022] The beneficial effect of the above further scheme is: the drilling energy ratio of each drilling is accurately calculated according to the drilling parameters, and then the corresponding average drilling energy ratio can be calculated based on the drilling energy ratio of each borehole, and finally the average drilling energy ratio of a single blasting cycle is obtained based on the average drilling energy ratio of all boreholes. Combined with the corresponding historical blasting unit consumption, a regression relationship model of the average drilling energy ratio of the blasting cycle and the explosive unit consumption is obtained, so as to subsequently accurately calculate the average drilling energy ratio of the target blasting cycle.

[0023] Further: the method of using the relationship model to determine the total explosive usage of the target blasting cycle specifically includes the following steps:

[0024] Calculate the average drilling specific energy of the target blasting cycle according to the drilling parameters of the target blasting cycle;

[0025] The explosive consumption per target blasting cycle can be calculated according to the regression relationship model and the average penetration ratio of the target blasting cycle;

[0026] The total amount of explosives for the target blasting cycle is calculated based on the face area, average drilling depth and unit consumption of explosives for the target blasting cycle.

[0027] The beneficial effect of the above further scheme is that the average drilling specific energy of the target blasting cycle can be calculated through the drilling parameters of the target blasting cycle, so that the unit consumption of explosives in the target blasting cycle can be calculated using the relationship model, and then the total amount of explosives in the target blasting cycle can be accurately obtained according to parameters such as the face area and average drilling depth of the target blasting cycle, thereby facilitating the subsequent determination of the total explosive consumption of the peripheral holes, the explosive consumption of each peripheral hole and the number of charges.

[0028] Further: the method of calculating the total explosive usage of the peripheral holes, the explosive usage of each peripheral hole and the number of charges according to the blasting drilling type on the tunnel support surface of the target blasting cycle specifically includes the following steps:

[0029] Determine the total explosive consumption Q of the peripheral holes according to the preset distribution ratio of the peripheral holes and the total amount of explosives in the target blasting cycle. c ;

[0030] According to the depth of each peripheral hole and the corresponding average drilling ratio, the single hole charge Q of the mth peripheral hole can be determined. cm , the calculation formula is:

[0031]

[0032] Among them, L m is the drilling depth of the mth borehole, E vm is the average drilling specific energy of the mth borehole, j is the number of peripheral holes in the target blasting cycle;

[0033] Determine the number b of explosives charged per hole in the mth peripheral hole according to the weight of a single stick of explosive on site.

[0034] The beneficial effect of the above further scheme is that the total explosive amount Q of the peripheral holes can be accurately determined according to the total explosive amount of the target blasting cycle by presetting the distribution ratio of the peripheral holes. c , so that the total explosive consumption Q of the surrounding holes can be c The depth of the surrounding holes and the corresponding average drilling ratio can determine the charge Q of the surrounding holes. cm , and then determine the number of single-hole charges in the surrounding holes to achieve accurate distribution of explosives.

[0035] Further: the step of determining the longitudinal charge position of each peripheral hole according to the drilling parameters of each peripheral hole, the amount of explosives used in each peripheral hole and the number of charges specifically comprises the following steps:

[0036] Draw a drilling depth-drilling specific energy curve based on the drilling depth of each peripheral hole in the target blasting cycle and the corresponding drilling specific energy;

[0037] The shaded area formed between the drilling depth-drilling specific energy curve and its longitudinal projection on the coordinate axis is evenly divided into areas having the same number of charges per hole as the corresponding peripheral holes;

[0038] The placement of a single explosive is determined based on the midpoint of the horizontal coordinate of each area.

[0039] The beneficial effect of the above further scheme is: by drawing the drilling depth-drilling specific energy curve, the shadow area formed between the drilling depth-drilling specific energy curve and its longitudinal projection on the coordinate axis can be evenly divided into multiple regions, thereby ensuring that a single explosive is placed in each region one by one, and the placement position of the single explosive is determined according to the midpoint of the horizontal coordinate of each region, which is conducive to achieving a better blasting effect.

[0040] The present invention also provides a system for determining the charging position of holes around a tunnel face, comprising a relationship model module, a calculation module and a position determination module;

[0041] The relationship model module is used to complete blasting drilling on the tunnel face according to the designed hole layout, record the drilling parameters of the drilling, and use the drilling parameters to establish a relationship model between the drilling specific energy of the blasting cycle and the actual blasting unit consumption;

[0042] The calculation module is used to determine the total explosive consumption of the target blasting cycle using the relationship model;

[0043] The calculation module is also used to calculate the total explosive usage of the peripheral holes, the explosive usage of each peripheral hole and the number of charges according to the type of drilling holes in the target blasting cycle;

[0044] The position determination module is used to determine the longitudinal charge position of each peripheral hole according to the drilling parameters of each peripheral hole, the amount of explosives used in each peripheral hole and the number of charges.

[0045] The system for determining the charging position of the peripheral holes of the tunnel face of the present invention constructs a relationship model between the drilling specific energy of the blasting cycle and the actual blasting unit consumption through the drilling parameters of the drilling holes during blasting drilling, thereby accurately determining the total explosive consumption of the target blasting cycle, and then determining the longitudinal charging position of each peripheral hole based on the total explosive consumption and drilling parameters of the peripheral holes, using the measurement-while-drilling parameters of the blasting drilling holes to characterize the rock mass characteristics, and quickly guiding the fine charging of the peripheral holes according to the three-dimensional distribution characteristics of the rock mass in front of the tunnel face, thereby reducing over-excavation and under-excavation, controlling the tunnel blasting profile, and improving the blasting effect.

[0046] On the basis of the above technical solution, the present invention can also be improved as follows:

[0047] Further: The specific implementation of the relationship model module using the historical data of the drilling parameters and blasting cycles to establish the relationship model between the drilling specific energy of the blasting cycle and the actual blasting unit consumption is:

[0048] The drilling specific energy of each drilling is calculated according to the drilling parameters, and the calculation formula is:

[0049]

[0050] Where D is the borehole diameter, V is the drilling rate, F is the drilling pressure, N is the drill speed and T is the torque;

[0051] According to the drilling depth L of the i-th borehole i , determine the average drilling specific energy E of the ith borehole vi ;

[0052] According to the weighted average of the drilling depth of each borehole in the nth blasting cycle and the corresponding average drilling specific energy, the average drilling specific energy E of the nth blasting cycle is determined. vn , the calculation formula is:

[0053]

[0054] Among them, L i is the drilling depth of the ith borehole, E vi is the average drilling specific energy of the ith borehole, i is the number of boreholes in the nth blasting cycle;

[0055] Based on the historical data of all blasting cycles, a regression analysis was conducted to establish a regression relationship model between the average drilling specific energy of the blasting cycle and the unit consumption of explosives. The formula is as follows:

[0056] E=kf

[0057] Among them, k is the proportionality coefficient, E is the average drilling specific energy of the blasting cycle, and f is the unit consumption of explosives.

[0058] The beneficial effect of the above further scheme is: the drilling energy ratio of each drilling is accurately calculated according to the drilling parameters, and then the corresponding average drilling energy ratio can be calculated based on the drilling energy ratio of each borehole, and finally the average drilling energy ratio of a single blasting cycle is obtained based on the average drilling energy ratio of all boreholes. Combined with the corresponding historical blasting unit consumption, a regression relationship model of the average drilling energy ratio of the blasting cycle and the explosive unit consumption is obtained, so as to subsequently accurately calculate the average drilling energy ratio of the target blasting cycle.

[0059] Further: the calculation module calculates the total explosive usage of the peripheral holes, the explosive usage of each peripheral hole and the number of charges according to the blasting drilling type on the tunnel support surface of the target blasting cycle as follows:

[0060] Determine the total explosive consumption Q of the peripheral holes according to the preset distribution ratio of the peripheral holes and the total amount of explosives in the target blasting cycle. c ;

[0061] According to the depth of each peripheral hole and the corresponding average drilling ratio, the single hole charge Q of the mth peripheral hole can be determined. cm , the calculation formula is:

[0062]

[0063] Among them, L m is the drilling depth of the mth borehole, E vm is the average drilling specific energy of the mth borehole, j is the number of peripheral holes in the target blasting cycle;

[0064] Determine the number b of explosives charged per hole in the mth peripheral hole according to the weight of a single stick of explosive on site.

[0065] The beneficial effect of the above further scheme is that the total explosive amount Q of the peripheral holes can be accurately determined according to the total explosive amount of the target blasting cycle by presetting the distribution ratio of the peripheral holes. c , so that the total explosive consumption Q of the surrounding holes can be c The depth of the surrounding holes and the corresponding average drilling ratio can determine the charge Q of the surrounding holes. cm , and then determine the number of single-hole charges in the surrounding holes to achieve accurate distribution of explosives.

[0066] The present invention also provides a computer-readable storage medium storing a computer program, characterized in that when the computer program is executed by a processor, the method for determining the charging position of the peripheral holes of the tunnel face is implemented.

[0067] The present invention also provides a device for determining the charging position of a hole around a tunnel face, comprising a communication interface, a memory, a communication bus and a processor, wherein the processor, the communication interface and the memory communicate with each other through the communication bus;

[0068] The memory is used to store computer programs;

[0069] The processor is used to implement the steps of the method for determining the charging position of the holes around the tunnel face when executing the program stored in the memory. BRIEF DESCRIPTION OF THE DRAWINGS

[0070] Figure 1 It is a schematic flow chart of a method for determining charging positions of holes around a tunnel face according to an embodiment of the present invention;

[0071] Figure 2 A thermal diagram of the specific energy distribution of drilling at a tunnel face according to an embodiment of the present invention;

[0072] Figure 3 A schematic diagram of a relationship model between drilling specific energy and explosive unit consumption according to an embodiment of the present invention;

[0073] Figure 4 A schematic diagram of the distribution of blasting holes in a tunnel face according to an embodiment of the present invention;

[0074] Figure 5 The present invention is a schematic structural diagram of a system for determining charge positions in holes surrounding a tunnel face according to an embodiment of the present invention. DETAILED DESCRIPTION

[0075] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0076] like Figure 1 As shown, a method for determining the charging position of the peripheral holes of a tunnel face comprises the following steps:

[0077] S1: completing blasting drilling on the tunnel face according to the designed hole layout, recording the drilling parameters of the drilling, and using the drilling parameters and historical data of the blasting cycle to establish a relationship model between the drilling specific energy of the blasting cycle and the actual blasting unit consumption;

[0078] S2: Determine the total explosive consumption of the target blasting cycle using the relationship model;

[0079] S3: Calculate the total explosive usage of the peripheral holes, the explosive usage of each peripheral hole and the number of charges according to the type of drilling holes in the target blasting cycle;

[0080] S4: Determine the longitudinal charging position of each peripheral hole according to the drilling parameters of each peripheral hole, the amount of explosives used in each peripheral hole and the number of charges.

[0081] The method for charging peripheral holes of a tunnel face based on the drilling specific energy of blasting holes of the present invention constructs a relationship model between the drilling specific energy of a blasting cycle and the actual blasting unit consumption through the drilling parameters of the drilling holes during blasting drilling, thereby accurately determining the total explosive usage of a target blasting cycle, and then determining the longitudinal charging position of each peripheral hole based on the total explosive usage and drilling parameters of the peripheral holes, characterizing the rock mass characteristics by using the while-drilling measurement parameters of the blasting drilling holes, and quickly guiding the fine charging of the peripheral holes according to the three-dimensional distribution characteristics of the rock mass in front of the tunnel face, thereby reducing over-excavation and under-excavation, controlling the tunnel blasting profile, and improving the blasting effect.

[0082] In one or more embodiments of the present invention, the use of the drilling parameters and historical data of the blasting cycle to establish a relationship model between the drilling specific energy of the blasting cycle and the actual blasting unit consumption specifically includes the following steps:

[0083] S11: Calculate the drilling specific energy of each drilling according to the drilling parameters, and the calculation formula is:

[0084]

[0085] Where D is the borehole diameter, V is the drilling rate, F is the drilling pressure, N is the drill speed and T is the torque;

[0086] S12: According to the drilling depth L of the i-th borehole i , determine the average drilling specific energy E of the ith borehole vi ;

[0087] In practice, the drilling parameters are recorded every 2 cm of drilling, and then the corresponding drilling specific energy is calculated based on the recorded drilling parameters. Then, for each borehole, according to its drilling depth, all the calculated drilling specific energies can be averaged to calculate the corresponding average drilling specific energy.

[0088] In order to facilitate intuitive understanding, after calculating the average drilling specific energy of each borehole, the thermal distribution map on the tunnel face is also drawn according to the average drilling specific energy of each borehole, such as Figure 2 shown.

[0089] S13: Determine the average drilling specific energy E of the nth blasting cycle by taking a weighted average based on the drilling depth of each borehole in the nth blasting cycle and the corresponding average drilling specific energy vn , the calculation formula is:

[0090]

[0091] Among them, L iis the drilling depth of the ith borehole, E vi is the average drilling specific energy of the ith borehole, i is the number of boreholes in the nth blasting cycle;

[0092] S14: Based on the historical data of all blasting cycles, a regression analysis is performed to establish a regression relationship model between the average drilling specific energy of the blasting cycle and the unit consumption of explosives. The formula is as follows:

[0093] E=kf

[0094] Among them, k is the proportionality coefficient, E is the average drilling specific energy of the blasting cycle, and f is the unit consumption of explosives.

[0095] Here, the explosive consumption can be calculated based on the drilling parameters of the borehole. For example, for a single blasting cycle, the average drilling depth is L v , the area of ​​the tunnel face is S, the total amount of blasting explosives is Q, calculate the actual blasting unit consumption f of the nth blasting cycle n , the formula is as follows:

[0096]

[0097] The drilling specific energy of each drilling is accurately calculated according to the drilling parameters, and then the corresponding average drilling specific energy can be calculated based on the drilling specific energy of each borehole. Finally, the average drilling specific energy of a single blasting cycle is obtained based on the average drilling specific energy of all boreholes. Combined with the corresponding historical blasting unit consumption, the regression relationship model between the average drilling specific energy of the blasting cycle and the unit consumption of explosives is obtained, such as Figure 3 As shown, the average drilling specific energy of the target blasting cycle can be accurately calculated later.

[0098] In one or more embodiments of the present invention, the determining the total explosive usage of the target blasting cycle by using the relationship model specifically comprises the following steps:

[0099] S21: calculating the average drilling specific energy of the target blasting cycle according to the drilling parameters of the target blasting cycle;

[0100] Here, the drilling specific energy of each drilling is calculated based on the aforementioned formula, and then the average drilling specific energy of each borehole is calculated. Finally, the average drilling specific energy of all boreholes in the target blasting cycle can be obtained, which will not be repeated here.

[0101] S22: calculating the explosive consumption per target blasting cycle according to the regression relationship model and the average drilling ratio of the target blasting cycle;

[0102] Similarly, after calculating the average drilling specific energy of the target blasting cycle, the corresponding total amount of blasting explosives can be calculated according to the aforementioned regression model, and then the blasting unit consumption of the target blasting cycle can be calculated by combining the average drilling depth and face area of ​​the target blasting cycle.

[0103] S23: Calculating the total amount of explosives for the target blasting cycle according to the face area, average drilling depth and unit consumption of explosives for the target blasting cycle.

[0104] Here, the total amount of explosives for the target blasting cycle can be obtained by multiplying the face area, the average drilling depth and the unit consumption of explosives.

[0105] The average drilling specific energy of the target blasting cycle can be calculated through the drilling parameters of the target blasting cycle. In this way, the unit consumption of explosives in the target blasting cycle can be calculated using the relationship model, and then the total amount of explosives in the target blasting cycle can be accurately obtained according to parameters such as the face area and average drilling depth of the target blasting cycle, thereby facilitating the subsequent determination of the total explosive consumption of the peripheral holes, the explosive consumption of each peripheral hole and the number of charges.

[0106] In one or more embodiments of the present invention, the calculation of the total explosive usage of the peripheral holes, the explosive usage of each peripheral hole and the number of charges according to the blasting drilling type on the tunnel support surface of the target blasting cycle specifically includes the following steps:

[0107] S31: Determine the total explosive amount Q of the peripheral holes according to the preset distribution ratio of the peripheral holes and the total amount Q of explosives in the target blasting cycle c ;

[0108] In the embodiment of the present invention, the preset allocation ratio of the peripheral holes is 0.2, that is, Q c = 0.2Q, in the present invention, the drilled holes on the tunnel face can be divided into four categories: (1) slot holes, (3) collapse holes, (4) floor holes and (2) peripheral holes. Figure 4 shown.

[0109] S32: According to the depth of each peripheral hole and the corresponding average drilling ratio, the charge amount Q of the mth peripheral hole can be determined. cm , the calculation formula is:

[0110]

[0111] Among them, L m is the drilling depth of the mth borehole, E vm is the average drilling specific energy of the mth borehole, j is the number of peripheral holes in the target blasting cycle;

[0112] S33: Determine the number b of explosives charged per hole in the mth peripheral hole according to the weight of a single explosive at the site.

[0113] By presetting the distribution ratio of the peripheral holes, the total explosive consumption Q of the peripheral holes can be accurately determined according to the total explosive consumption of the target blasting cycle. c , so that the total explosive consumption Q of the surrounding holes can be c The depth of the surrounding holes and the corresponding average drilling ratio can determine the charge Q of the surrounding holes. cm , and then determine the number of single-hole charges in the surrounding holes to achieve accurate distribution of explosives.

[0114] In one or more embodiments of the present invention, the step of determining the longitudinal charge position of each peripheral hole according to the drilling parameters of each peripheral hole, the amount of explosives used in each peripheral hole, and the number of charges comprises the following steps:

[0115] S41: drawing a drilling depth-drilling specific energy curve according to the drilling depth of each peripheral hole in the target blasting cycle and the corresponding drilling specific energy;

[0116] Here, in the coordinate system of the drilling depth-drilling specific energy curve, the abscissa is the peripheral hole length, and the ordinate corresponds to the drilling specific energy, where the starting point of the abscissa is a and the end point is c;

[0117] S42: Divide the shaded area formed between the drilling depth-drilling specific energy curve and its longitudinal projection on the coordinate axis into regions having the same number of charges per hole as the corresponding peripheral holes;

[0118] In practice, Python or MATLAB software can be used to automatically divide the shaded area of ​​the curve into b areas, and the corresponding horizontal coordinates of the dividing points are b1, b2, ..., b b-1 ;

[0119] S43: Determine the placement position of a single explosive according to the midpoint of the horizontal coordinate of each area.

[0120] Here, the placement positions of the individual explosives are (a+b1) / 2, (b1+b2) / 2, (b2+b3) / 2, ..., (b b-1 +c) / 2.

[0121] By drawing the drilling depth-drilling specific energy curve, the shadow area formed between the drilling depth-drilling specific energy curve and its longitudinal projection on the coordinate axis can be evenly divided into multiple regions, thereby ensuring that a single explosive is placed in each region one by one, and the placement position of the single explosive is determined according to the midpoint of the horizontal coordinate of each region, which is conducive to achieving a better blasting effect.

[0122] like Figure 5As shown, the present invention also provides a system for determining the charging position of the peripheral holes of a tunnel face, comprising a relationship model module, a calculation module and a position determination module;

[0123] The relationship model module is used to complete blasting drilling on the tunnel face according to the designed hole layout, record the drilling parameters of the drilling, and use the drilling parameters to establish a relationship model between the drilling specific energy of the blasting cycle and the actual blasting unit consumption;

[0124] The calculation module is used to determine the total explosive consumption of the target blasting cycle using the relationship model;

[0125] The calculation module is also used to calculate the total explosive usage of the peripheral holes, the explosive usage of each peripheral hole and the number of charges according to the type of drilling holes in the target blasting cycle;

[0126] The position determination module is used to determine the longitudinal charge position of each peripheral hole according to the drilling parameters of each peripheral hole, the amount of explosives used in each peripheral hole and the number of charges.

[0127] The system for determining the charging position of the peripheral holes of the tunnel face of the present invention constructs a relationship model between the drilling specific energy of the blasting cycle and the actual blasting unit consumption through the drilling parameters of the drilling holes during blasting drilling, thereby accurately determining the total explosive consumption of the target blasting cycle, and then determining the longitudinal charging position of each peripheral hole based on the total explosive consumption and drilling parameters of the peripheral holes, using the measurement-while-drilling parameters of the blasting drilling holes to characterize the rock mass characteristics, and quickly guiding the fine charging of the peripheral holes according to the three-dimensional distribution characteristics of the rock mass in front of the tunnel face, thereby reducing over-excavation and under-excavation, controlling the tunnel blasting profile, and improving the blasting effect.

[0128] In one or more embodiments of the present invention, the relationship model module uses the drilling parameters and historical data of the blasting cycle to establish a relationship model between the drilling specific energy of the blasting cycle and the actual blasting unit consumption as follows:

[0129] The drilling specific energy of each drilling is calculated according to the drilling parameters, and the calculation formula is:

[0130]

[0131] Where D is the borehole diameter, V is the drilling rate, F is the drilling pressure, N is the drill speed and T is the torque;

[0132] According to the drilling depth L of the i-th borehole i , determine the average drilling specific energy E of the ith borehole vi ;

[0133] According to the weighted average of the drilling depth of each borehole in the nth blasting cycle and the corresponding average drilling specific energy, the average drilling specific energy E of the nth blasting cycle is determined. vn, the calculation formula is:

[0134]

[0135] Among them, L i is the drilling depth of the ith borehole, E vi is the average drilling specific energy of the ith borehole, i is the number of boreholes in the nth blasting cycle;

[0136] Based on the historical data of all blasting cycles, a regression analysis was conducted to establish a regression relationship model between the average drilling specific energy of the blasting cycle and the unit consumption of explosives. The formula is as follows:

[0137] E=kf

[0138] Among them, k is the proportionality coefficient, E is the average drilling specific energy of the blasting cycle, and f is the unit consumption of explosives.

[0139] The drilling specific energy of each drilling is accurately calculated according to the drilling parameters, and then the corresponding average drilling specific energy can be calculated based on the drilling specific energy of each borehole. Finally, the average drilling specific energy of a single blasting cycle is obtained based on the average drilling specific energy of all boreholes. Combined with the corresponding historical blasting unit consumption, a regression relationship model between the average drilling specific energy of the blasting cycle and the unit consumption of explosives is obtained, so as to subsequently accurately calculate the average drilling specific energy of the target blasting cycle.

[0140] In one or more embodiments of the present invention, the calculation module calculates the total explosive usage of the peripheral holes, the explosive usage of each peripheral hole, and the number of charges according to the blasting drilling type on the tunnel support surface of the target blasting cycle as follows:

[0141] Determine the total explosive consumption Q of the peripheral holes according to the preset distribution ratio of the peripheral holes and the total amount of explosives in the target blasting cycle. c ;

[0142] According to the depth of each peripheral hole and the corresponding average drilling ratio, the single hole charge Q of the mth peripheral hole can be determined. cm , the calculation formula is:

[0143]

[0144] Among them, L m is the drilling depth of the mth borehole, E vm is the average drilling specific energy of the mth borehole, j is the number of peripheral holes in the target blasting cycle;

[0145] Determine the number b of explosives charged per hole in the mth peripheral hole according to the weight of a single stick of explosive on site.

[0146] By presetting the distribution ratio of the peripheral holes, the total explosive consumption Q of the peripheral holes can be accurately determined according to the total explosive consumption of the target blasting cycle. c , so that the total explosive consumption Q of the surrounding holes can be c The depth of the surrounding holes and the corresponding average drilling ratio can determine the charge Q of the surrounding holes. cm , and then determine the number of single-hole charges in the surrounding holes to achieve accurate distribution of explosives.

[0147] The present invention also provides a computer-readable storage medium storing a computer program, characterized in that when the computer program is executed by a processor, the method for determining the charging position of the peripheral holes of the tunnel face is implemented.

[0148] The present invention also provides a device for determining the charging position of a hole around a tunnel face, comprising a communication interface, a memory, a communication bus and a processor, wherein the processor, the communication interface and the memory communicate with each other through the communication bus;

[0149] The memory is used to store computer programs;

[0150] The processor is used to implement the steps of the method for determining the charging position of the holes around the tunnel face when executing the program stored in the memory.

[0151] The method and system for determining the charging position of the peripheral holes of the tunnel face of the present invention make full use of the drilling parameters in the blasting drilling process, form the drilling parameters that reflect the difficulty of the drilling process into drilling specific energy, and establish the relationship between the blasting unit consumption and the drilling specific energy based on the blasting historical data accumulated in the previous blasting cycle. For the next (target) blasting cycle, the precise blasting unit consumption and the total amount of explosives and the charge amount of the peripheral holes can be determined based on the drilling specific energy, and then the axial charging position and quantity of the peripheral holes are determined through the distribution of the drilling specific energy of the peripheral holes, avoiding relying solely on manual experience for blasting design and determining the blasting unit consumption, thereby improving the blasting effect of the peripheral holes.

[0152] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for determining the charging position of holes around a tunnel face, characterized in that: The steps include: Complete blasting drilling on the tunnel face according to the designed hole layout, record the drilling parameters of the drilling, and use the drilling parameters and historical data of the blasting cycle to establish a relationship model between the drilling specific energy of the blasting cycle and the actual blasting unit consumption; Determining the total explosive usage of a target blasting cycle using the relationship model; Calculate the total explosive usage of the peripheral holes, the explosive usage of each peripheral hole and the number of charges according to the type of drilling holes in the target blasting cycle; The longitudinal charging position of each peripheral hole is determined according to the drilling parameters of each peripheral hole, the amount of explosives used in each peripheral hole and the number of charges.

2. The method for determining the charging position of the peripheral holes of the tunnel face according to claim 1 is characterized in that: The method of establishing a relationship model between the drilling specific energy of a blasting cycle and the actual blasting unit consumption by using the drilling parameters and the historical data of the blasting cycle specifically comprises the following steps: The drilling specific energy of each drilling is calculated according to the drilling parameters, and the calculation formula is: Where D is the borehole diameter, V is the drilling rate, F is the drilling pressure, N is the drill speed and T is the torque; According to the drilling depth L of the i-th borehole i , determine the average drilling specific energy E of the ith borehole vi ; According to the weighted average of the drilling depth of each borehole in the nth blasting cycle and the corresponding average drilling specific energy, the average drilling specific energy E of the nth blasting cycle is determined. vn , the calculation formula is: Among them, L i is the drilling depth of the ith borehole, E vi is the average drilling specific energy of the ith borehole, i is the number of boreholes in the nth blasting cycle; Based on the historical data of all blasting cycles, a regression analysis was conducted to establish a regression relationship model between the average drilling specific energy of the blasting cycle and the unit consumption of explosives. The formula is as follows: E=kf Among them, k is the proportionality coefficient, E is the average drilling specific energy of the blasting cycle, and f is the unit consumption of explosives.

3. The method for determining the charging position of the peripheral holes of the tunnel face according to claim 2 is characterized in that: Determining the total explosive usage of the target blasting cycle by using the relationship model specifically comprises the following steps: Calculate the average drilling specific energy of the target blasting cycle according to the drilling parameters of the target blasting cycle; The explosive consumption per target blasting cycle can be calculated based on the regression relationship model and the average penetration ratio of the target blasting cycle; The total amount of explosives for the target blasting cycle is calculated based on the face area, average drilling depth and unit consumption of explosives for the target blasting cycle.

4. The method for determining the charging position of the peripheral holes of the tunnel face according to claim 2 is characterized in that: The method of calculating the total explosive consumption of the peripheral holes, the explosive consumption of each peripheral hole and the number of charges according to the blasting drilling type on the tunnel support surface of the target blasting cycle specifically includes the following steps: Determine the total explosive consumption Q of the peripheral holes according to the preset distribution ratio of the peripheral holes and the total amount of explosives in the target blasting cycle. c ; According to the depth of each peripheral hole and the corresponding average drilling ratio, the single hole charge Q of the mth peripheral hole can be determined. cm , the calculation formula is: Among them, L m is the drilling depth of the mth borehole, E vm is the average drilling specific energy of the mth borehole, j is the number of peripheral holes in the target blasting cycle; Determine the number b of explosives charged per hole in the mth peripheral hole according to the weight of a single stick of explosive on site.

5. The method for determining the charging position of the peripheral holes of the tunnel face according to any one of claims 1 to 4, characterized in that: Determining the longitudinal charge position of each peripheral hole according to the drilling parameters of each peripheral hole, the amount of explosives used in each peripheral hole and the number of charges specifically comprises the following steps: Draw a drilling depth-drilling specific energy curve based on the drilling depth of each peripheral hole in the target blasting cycle and the corresponding drilling specific energy; The shaded area formed between the drilling depth-drilling specific energy curve and its longitudinal projection on the coordinate axis is evenly divided into areas having the same number of charges per hole as the corresponding peripheral holes; The placement of a single explosive is determined based on the midpoint of the horizontal coordinate of each area.

6. A system for determining the charging position of holes around the tunnel face, characterized in that: It includes a relationship model module, a calculation module and a location determination module; The relationship model module is used to complete blasting drilling on the tunnel face according to the designed hole layout, record the drilling parameters of the drilling, and use the drilling parameters and historical data of the blasting cycle to establish a relationship model between the drilling specific energy of the blasting cycle and the actual blasting unit consumption; The calculation module is used to determine the total explosive consumption of the target blasting cycle using the relationship model; The calculation module is also used to calculate the total explosive usage of the peripheral holes, the explosive usage of each peripheral hole and the number of charges according to the type of drilling holes in the target blasting cycle; The position determination module is used to determine the longitudinal charge position of each peripheral hole according to the drilling parameters of each peripheral hole, the amount of explosives used in each peripheral hole and the number of charges.

7. The system for determining the charging position of holes around the tunnel face according to claim 6, characterized in that: The specific implementation of the relationship model module using the drilling parameters and historical data of the blasting cycle to establish the relationship model between the drilling specific energy of the blasting cycle and the actual blasting unit consumption is: The drilling specific energy of each drilling is calculated according to the drilling parameters, and the calculation formula is: Where D is the borehole diameter, V is the drilling rate, F is the drilling pressure, N is the drill speed and T is the torque; According to the drilling depth L of the i-th borehole i , determine the average drilling specific energy E of the ith borehole vi ; According to the weighted average of the drilling depth of each borehole in the nth blasting cycle and the corresponding average drilling specific energy, the average drilling specific energy E of the nth blasting cycle is determined. vn , the calculation formula is: Among them, L i is the drilling depth of the ith borehole, E vi is the average drilling specific energy of the ith borehole, i is the number of boreholes in the nth blasting cycle; Based on the historical data of all blasting cycles, a regression analysis was conducted to establish a regression relationship model between the average drilling specific energy of the blasting cycle and the unit consumption of explosives. The formula is as follows: E=kf Among them, k is the proportionality coefficient, E is the average drilling specific energy of the blasting cycle, and f is the unit consumption of explosives.

8. The system for determining the charging position of holes around the tunnel face according to claim 6, characterized in that: The calculation module calculates the total explosive usage of the peripheral holes, the explosive usage of each peripheral hole and the number of charges according to the blasting drilling type on the tunnel support surface of the target blasting cycle as follows: Determine the total explosive consumption Q of the peripheral holes according to the preset distribution ratio of the peripheral holes and the total amount of explosives in the target blasting cycle. c ; According to the depth of each peripheral hole and the corresponding average drilling ratio, the single hole charge Q of the mth peripheral hole can be determined. cm , the calculation formula is: Among them, L m is the drilling depth of the mth borehole, E vm is the average drilling specific energy of the mth borehole, j is the number of peripheral holes in the target blasting cycle; Determine the number b of explosives charged per hole in the mth peripheral hole according to the weight of a single stick of explosive on site.

9. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the method for determining the charging position of the peripheral holes of the tunnel face as described in any one of claims 1 to 5 is implemented.

10. A device for determining the charging position of holes around the tunnel face, characterized in that: It includes a communication interface, a memory, a communication bus and a processor, wherein the processor, the communication interface and the memory communicate with each other through the communication bus; The memory is used to store computer programs; The processor is used to implement the steps of the method for determining the charging position of the peripheral holes of the tunnel face as described in any one of claims 1 to 5 when executing the program stored in the memory.

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