A simulation device for deep-buried roadway slotting blasting and a loading method thereof

Abstract

The application discloses a kind of simulation device and loading method for deep buried roadway slotting blasting in the technical field of experimental equipment, including double-shaft loading unit and the rock mass simulation test piece being arranged in the double-shaft loading equipment;First, make roadway experimental model, use electric blasting comprehensive experimental system to carry out blasting on the model, study the rock breaking mechanism of slotting hole blasting under different stress levels, the movement characteristics of post-blasting rock mass, dynamic strain evolution process and post-blasting effect analysis.This application mainly studies deep high-stress roadway, independently selects stress similarity constant and geometric similarity constant according to similarity experiment law, arranges blasting borehole and network according to on-site blasting live, which can realize comprehensive and real simulation of on-site slotting blasting process.Provides reliable experimental method and result for mine roadway slotting blasting mechanism research, which can provide guidance for on-site slotting blasting optimization.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of experimental equipment, and particularly relates to a simulation device for deep-buried roadway slotting blasting and a loading method thereof. BACKGROUND

[0002] The drill-and-blast method is the main construction method for deep-buried hard rock well and roadway excavation in China at present, and is widely used in tunnel and large chamber excavation in the mining, water conservancy, railway and other industries, but has poor controllability and also brings many negative effects. In recent years, domestic and foreign researchers have carried out a large number of studies on blasting problems by using model test methods. Many cases show that how to improve the blasting efficiency, improve the blasting effect, and reduce the explosive consumption is still the main problem to be solved in rock and roadway excavation blasting. In view of the problems of poor slotting effect and low utilization rate of blast holes, the physical model test method can be used to carry out model test research on different slotting methods. The physical model test method has the advantages of being intuitive, high reliability, relatively low cost and not affecting the production site. The roadway slotting blasting model test is to determine the parameters necessary for slotting blasting, such as the control mode, blast hole spacing and delay time, according to the similarity law of blasting simulation, including the similarity of material, rock mechanics, geometry, dynamics and boundary conditions, to evaluate the blasting effect such as the volume of the formed cavity, the throwing amount and the fragmentation rate; so that the full-size blasting of the production site can be simulated through a series of small-size physical model slotting blasting tests, and the qualitative and quantitative analysis close to the results of the roadway excavation blasting on site is obtained, achieving the goal of achieving more with less. SUMMARY

[0003] The purpose of the present application is to solve the defects in the prior art of experimental equipment technology, and to provide a simulation device for deep-buried roadway slotting blasting and a loading method thereof. The simulation device can simulate the slotting blasting process of high-stress roadway by using a small-size physical model, and can observe the crack propagation and strain field evolution during the blasting process. The block size distribution and cavity formation effect after blasting can also be evaluated and analyzed. Real and accurate test data can be obtained through corresponding measuring instruments and monitoring equipment, which provides a basis for the design and optimization of blast hole position and parameters on site. The problems of lack of entity for high-stress slotting blasting test in the laboratory, inability to simulate the real situation on site, large required model, long test period and poor entity homogeneity are solved. The method has the characteristics of small test piece size, good homogeneity, simple operation, short test period, no detonation difficulty and strong applicability, and has wide engineering practical significance and application prospect.

[0004] In order to achieve the above purpose, the technical scheme adopted by the present application is as follows:

[0005] A simulation device for deep roadway slotting blasting, comprising a biaxial loading unit and a rock mass simulation test piece arranged in the biaxial loading device;

[0006] The rock mass simulation test piece comprises a forming base, a mold, a first electrode, a second electrode, a connecting part and a fixed crossbeam, the mold is arranged in a half-frame shape with one side open, the fixed crossbeam is installed on the open side of the mold, the forming base is arranged in the interior of the mold, the first electrode and the second motor are respectively installed at different positions on the forming base, the middle part of the first electrode and the middle part of the second electrode are connected through the connecting part, and the first electrode and the second electrode respectively extend outward through the fixed crossbeam;

[0007] The biaxial loading unit comprises a biaxial loader and a controller, the rock mass simulation test piece is connected to the inner side wall of the biaxial loader, a cushion block is arranged between the rock mass simulation test piece and the biaxial loader, and the controller is arranged outside the rock mass simulation test piece and electrically connected to the inner side wall of the biaxial loader.

[0008] Preferably, the first electrode comprises a fixed insulating rod and a first connecting rod, one end of the fixed insulating rod is connected to the forming base and extends to the bottom side of the forming base, the other end of the fixed insulating rod is provided with a copper rod fixing hole, one end of the first connecting rod is connected to the copper rod fixing hole of the fixed insulating rod, and the other end of the first connecting rod extends to the outside of the mold through the fixed crossbeam.

[0009] Preferably, the second electrode comprises a hollow forming metal rod and a second connecting rod, one end of the hollow forming metal rod is connected to the forming base and is not at the same position as the fixed insulating rod, the other end of the hollow forming rod is provided with a fixing hole, one end of the second connecting rod is fixedly connected to the fixing hole of the hollow forming rod, and the other end of the second connecting rod extends to the outside of the mold through the fixed crossbeam.

[0010] Preferably, a plurality of hollow forming metal rods are arranged, and the number of the second connecting rods corresponds to the number of the hollow forming rods.

[0011] Preferably, the connecting part comprises a connecting copper rod and a metal wire, one end of the connecting copper rod is connected to the positive copper rod, the other end of the connecting copper rod is connected to the middle part of the hollow forming rod, the connecting copper rod is connected to one end of the metal wire at the middle part of the hollow forming rod, and the other end of the metal wire is connected to the second connecting rod.

[0012] As preferably, the fixed crossbeam is provided with a first fixing hole, a second fixing hole and a threaded hole, the first electrode extends to the outside of the mold through the first fixing hole, the second electrode extends to the outside of the mold through the second fixing hole, the mold is provided with a corresponding connecting hole at the connecting position with the fixed crossbeam, and the fixed crossbeam and the mold are detachably connected through the fixed bolts in the threaded hole and the connecting hole.

[0013] As preferably, the middle part of the shaped base is provided with a boss protruding outward, the first motor is connected to the boss of the shaped base, the second electrode is connected to a position outside the boss of the shaped base, and the shaped base is provided with a blowing hole arranged on the boss of the shaped base.

[0014] As preferably, the first electrode is a positive electrode, one first electrode is provided, the second electrode is a negative electrode, two or more second electrodes are provided, the number of the second electrodes corresponds to the number of the metal wires, one first electrode is connected to one second electrode and one metal wire through one connecting copper bar, and a plurality of second electrodes are connected to one first motor through one connecting copper bar and a plurality of metal wires to form a plurality of metal wire initiation networks, the diameter of the metal wire can be changed to simulate different borehole diameters, and the wiring mode can be changed to simulate single-hole initiation, multi-hole initiation and millisecond initiation.

[0015] As preferably, the dual-shaft loader is electrically connected to a high-voltage pulse energy accumulator, the high-voltage pulse energy accumulator is electrically connected to a pulse trigger, the outer side of the dual-shaft loader is further provided with a high-speed camera for observation, the voltage of the high-voltage pulse energy accumulator can be changed to simulate the explosion of different explosives, and the initiation time of the pulse trigger can be adjusted to realize multi-hole millisecond initiation.

[0016] A loading method of a simulation device for deep-buried roadway slotting blasting, comprising the following steps:

[0017] S1: The size of the excavated roadway and the real surrounding rock stress are determined through field reconnaissance, the size of the rock mass simulation test piece is designed according to the size of the excavated roadway, and the size of the rock mass simulation test piece is determined.

[0018] S2: A first electrode and two or more second electrodes are provided, and a plurality of metal wire initiation networks are provided, each metal wire initiation network is connected to one first electrode and one second electrode through an independent connecting part;

[0019] S3: fixing the first electrode and the second electrode at corresponding positions inside the mold, and installing a fixed crossbeam at the opening side of the mold and pulling the upper ends of the first electrode and the second electrode outwards from the inside of the mold through the fixed crossbeam;

[0020] S4: configuring a forming base material by using coarse quartz stone, fine quartz stone, cement and water, and pouring the configured material into the assembled mold to form a forming base, embedding a gas blowing hole on the forming base before pouring, and vibrating during pouring until no air bubbles are generated;

[0021] S5: demolding when the internal pouring material of the poured rock body simulation test piece reaches a certain strength, blowing gas from the gas blowing hole to the forming base by using a gas pump to form a blasting test piece;

[0022] S6: treating the surface of the blasting test piece, observing the surface stress change process, placing the rock body simulation test piece in a biaxial loader, applying corresponding stress according to the measured stress, connecting a high-speed camera, and making observation preparation;

[0023] S7: connecting the first electrode and the second electrode of the rock body simulation test piece to the positive and negative output ends of the high-voltage pulse energy storage device respectively, adjusting the voltage of the high-voltage pulse energy storage device according to the needs of the experiment, and using the pulse energy storage device for detonation.

[0024] Compared with the prior art, the beneficial effects of the present application are:

[0025] 1. The method is the same as the actual situation of on-site roadway excavation, and the excavated roadway can truly simulate the stress condition of the working face in the field.

[0026] 2. The experimental method sends a pulse trigger signal through a pulse trigger, triggers the switch inside the high-voltage pulse energy storage device to conduct and discharge, forms a loop with the multi-metal wire electrode, and under the action of instantaneous large current, the metal wire explodes, the shock wave generated by the metal wire explosion is used to simulate the explosion shock wave of explosives, and then the rock and other materials are broken. The photoelectric converter control module of the pulse trigger can realize microsecond-level control accuracy, and can simulate the millisecond initiation between different blast holes; the voltage of the high-voltage pulse energy storage device can make the metal wire produce different initiation pressures to simulate the initiation of explosives with different blasting pressures.

[0027] 3. The test method realizes that a small-size test piece can complete the indoor slotting blasting simulation test, and solves the problem that the explosives will not be transmitted due to the too small diameter of the blast hole by using metal wire explosion. The strain field analysis is realized by using a high-speed camera combined with image correlation technology, and the stress field observation problem of deep-buried roadway slotting blasting is solved; through the analysis of block size and cavity forming effect, different blast hole arrangement modes can be determined.

[0028] 4. The metal wire and small diameter conductive copper rod are used in cooperation, so that the influence of the internal electrode on the structure of the rock mass model test piece itself can be reduced under high confining pressure.

[0029] 5. The initiation pre-embedded electrode adopts a positive copper rod and multiple negative copper rods, and the simultaneous initiation and micro-difference initiation simulation are realized by changing the wiring mode. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 It is a structural schematic view of the simulation device for the deep-buried roadway slotting blasting;

[0031] Figure 2 It is an A-A sectional structural schematic view of the simulation device for the deep-buried roadway slotting blasting;

[0032] Figure 3 It is a structural schematic view of the formed base assembled of the simulation device for the deep-buried roadway slotting blasting;

[0033] Figure 4 It is a structural schematic view of the fixed insulating rod of the first electrode of the simulation device for the deep-buried roadway slotting blasting;

[0034] Figure 5 It is a structural schematic view of the fixed cross beam of the simulation device for the deep-buried roadway slotting blasting;

[0035] Figure 6 It is a structural schematic view of the multiple metal wire initiation network of the simulation device for the deep-buried roadway slotting blasting;

[0036] Figure 7 It is a simulation structural schematic view of the simulation device for the deep-buried roadway slotting blasting.

[0037] In the drawings, 1 is a formed base, 2 is a fixed insulating rod, 3 is a hole formed rod, 4 is a mold, 5 is a fixed bolt, 6 is a fixed cross beam, 7 is a first connecting rod, 8 is a second connecting rod, 9 is a connecting copper rod, 10 is a metal wire, 11 is a blowing hole, 12 is a copper rod fixed hole, 13 is a first fixed hole, 14 is a second fixed hole, 15 is a threaded hole, 16 is a height camera, 17 is a rock mass simulation test piece, 18 is a pulse trigger, 19 is a high-voltage pulse energy storage device, 20 is a double-axis loader, 21 is a cushion block, and 22 is a controller. DETAILED DESCRIPTION

[0038] The technical solutions in the embodiments of the present application will be clearly and completely described with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application.

[0039] As Figures 1-7 The simulation device for deep-buried roadway slotting blasting comprises a biaxial loading unit and a rock mass simulation test piece arranged in the biaxial loading device.

[0040] The rock mass simulation test piece comprises a forming base, a mold, a first electrode, a second electrode, a connecting part and a fixed crossbeam, the mold is arranged in a half-frame shape with one side open, the fixed crossbeam is installed on the open side of the mold, the forming base is arranged in the interior of the mold, the first electrode and the second motor are respectively installed at different positions on the forming base, the middle part of the first electrode and the middle part of the second electrode are connected through the connecting part, and the first electrode and the second electrode respectively extend outward through the fixed crossbeam; the middle part of the forming base is provided with a boss protruding outward, the first motor is connected to the boss of the forming base, the second electrode is connected to a position outside the boss of the forming base, and a blowing hole is formed in the forming base and arranged on the boss of the forming base.

[0041] The first electrode comprises a fixed insulating rod and a first connecting rod, one end of the fixed insulating rod is connected to the forming base and extends to the bottom side of the forming base, the other end of the fixed insulating rod is provided with a copper rod fixing hole, one end of the first connecting rod is connected to the copper rod fixing hole of the fixed insulating rod, and the other end of the first connecting rod extends to the outside of the mold through the fixed crossbeam. The second electrode comprises a hollow forming metal rod and a second connecting rod, one end of the hollow forming metal rod is connected to the forming base and is not at the same position as the fixed insulating rod, the other end of the hollow forming rod is provided with a fixing hole, one end of the second connecting rod is fixedly connected to the fixing hole of the hollow forming rod, and the other end of the second connecting rod extends to the outside of the mold through the fixed crossbeam; as a preferred, a plurality of hollow forming metal rods are arranged, and the number of the second connecting rods corresponds to the number of the hollow forming rods.

[0042] The connecting part comprises a connecting copper rod and a metal wire, one end of the connecting copper rod is connected with the positive copper rod, the other end of the connecting copper rod is connected to the middle part of the hole forming rod, the connecting copper rod is connected with one end of the metal wire at the middle part of the hole forming rod, and the other end of the metal wire is connected with a second connecting rod. The first electrode is arranged as a positive electrode, one first electrode is arranged, the second electrode is arranged as a negative electrode, two or more second electrodes are arranged, the number of second electrodes corresponds to the number of metal wires, one first electrode is connected with one second electrode through one connecting copper rod and one metal wire, and multiple second electrodes are connected with one first motor through one connecting copper rod and multiple metal wires to form multiple groups of metal wire initiation networks.

[0043] The first electrode extends to the outside of the mold through the first fixing hole, the second electrode extends to the outside of the mold through the second fixing hole, the mold is provided with a corresponding connecting hole at the connection position with the fixed cross beam, and the fixed cross beam and the mold are detachably connected in the threaded hole and the connecting hole through the fixing bolt.

[0044] The double-axis loading unit comprises a double-axis loader and a controller, the rock mass simulation test piece is connected to the inner side wall of the double-axis loader, a cushion block is arranged between the rock mass simulation test piece and the double-axis loader, and the controller is arranged outside the rock mass simulation test piece and electrically connected with the inner side wall of the double-axis loader. The double-axis loader is electrically connected with a high-voltage pulse energy accumulator, the high-voltage pulse energy accumulator is electrically connected with a pulse trigger, and a high-speed camera for observation is further arranged on the outer side of the double-axis loader. Different explosives can be simulated by changing the voltage of the high-voltage pulse energy accumulator, and multi-hole micro-difference initiation can be realized by adjusting the initiation time of the pulse trigger.

[0045] The above embodiments are only used to illustrate the technical solutions of the present application, but not limit the same; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

[0046] A loading method of a simulation device for deep-buried roadway slotting blasting, comprising the following steps:

[0047] S1: Determine the size of the excavated roadway and the actual surrounding rock stress through on-site reconnaissance, design the rock mass simulation test specimen ratio according to the size of the excavated roadway, and determine the size of the rock mass simulation test specimen;

[0048] S2: Set a first electrode and two or more second electrodes, set multiple groups of metal wire initiation networks, and each group of metal wire initiation networks is connected to a first electrode and a second electrode through independent connecting parts;

[0049] S3: Fix the first electrode and the second electrode at the corresponding positions inside the mold, install the fixed crossbeam on the opening side of the mold, and pull the upper ends of the first electrode and the second electrode outwards from the inside of the mold through the fixed crossbeam;

[0050] S4: Use coarse quartz stone, fine quartz stone, cement, and water to configure the forming base material, pour the configured material into the assembled mold to form the forming base, and pre-bury the air blowing hole on the forming base before pouring, and vibrate during pouring until no bubbles are generated;

[0051] S5: When the internal pouring material of the poured rock mass simulation test specimen reaches a certain strength, demold, blow air from the air blowing hole to the forming base with an air pump when demolding, and form a blasting test specimen;

[0052] S6: Treat the surface of the blasting test specimen, observe the surface stress change process, place the rock mass simulation test specimen in the biaxial loader, apply the corresponding stress according to the measured stress, connect the high-speed camera, and make observation preparations;

[0053] S7: Connect the first electrode and the second electrode of the rock mass simulation test specimen to the positive and negative output terminals of the high-voltage pulse energy storage device respectively, adjust the voltage of the high-voltage pulse energy storage device according to the experimental needs, and use the pulse energy storage device for initiation.

[0054] In one embodiment, a small-size model experiment method for deep-buried roadway slotting blasting includes the following steps:

[0055] Step 1: On-site reconnaissance: Determine the size of the excavated roadway as 3.8m*4.2m and the actual surrounding rock stress as horizontal 14MPa and vertical 24MPa through on-site reconnaissance, scale the roadway model according to a ratio of 1:50, determine the size of the model roadway as 78mm*84mm, and select the test specimen size of the poured rock mass simulation body as 300mm*300mm*220mm to ensure uniform distribution of boundary load.

[0056] Step 2: Make multiple groups of metal wire initiation networks, select positive copper rods 7 with a diameter specification of 4mm, negative copper rods 8 with a diameter specification of 3mm, multi-metal wire connecting copper rods 9 with a diameter specification of 2mm, and metal wires 10 with a diameter specification of 0.4mm, and configure the metal wire initiation networks according to the size of the model roadwayFigure 7 The welding is carried out by using an electric iron, and a network mode of one positive electrode and multiple negative electrodes is followed; wherein a 0.4 mm metal wire is used to simulate the explosive in the blast hole.

[0057] Step 3: Assemble the forming base 1, the positive electrode fixed insulating rod 2, the hollow forming metal rod 3, the mold 4, the multiple groups of metal wire initiation networks, and the electrode fixed beam 6: first, place the forming base 1 into the mold 4; then fix the multiple groups of metal wire initiation networks on the electrode fixed beam 6, and then install the whole on the mold 4, and fix the electrode fixed beam 6 by using the M8 fixed bolt 5; during the fixing, the bottom of the positive copper rod 7 is inserted into the positive copper rod fixed hole 12.

[0058] Step 4: Prepare the rock mass simulation test piece 17 material: according to the concrete design specification, the preparation ratio of coarse quartz sand (20-30 mesh): fine quartz sand (70-80 mesh): cement: water is 1.7:1.7:1:0.7 to prepare the simulation rock mass simulation test piece 17.

[0059] Step 5: Pour the rock mass simulation test piece 17: pour the prepared simulation rock mass simulation test piece 17 material into the assembled mold, and continuously vibrate with a concrete vibrator during pouring until no bubbles are generated.

[0060] Step 6: Demolding and curing: demold after the poured rock mass simulation test piece 17 reaches 3 days, and blow air from the forming base blowhole 11 to the space between the forming base 11 and the rock mass simulation test piece 17 by using an air pump for automatic demolding by air pressure, and then cure for 28 days according to the conventional method to become a blasting test piece.

[0061] Step 7: Blasting test: in order to observe the surface strain change process, spray a layer of white primer on the front surface of the rock mass simulation test piece 17 with a matte white self-spraying paint, and then spray black spots with a black self-spraying paint. Place the rock mass simulation test piece 17 under the biaxial loading device 20, and calculate it according to the stress measured in Step 1:

[0062] F 水 = 14 MPa * 0.22 m * 0.3 m = 924 kN

[0063] F 垂 = 24 MPa * 0.22 m * 0.3 m = 1584 kN

[0064] Horizontal direction load 924kN, vertical direction load 1584kN; high-speed camera 16 is arranged, and observation is prepared; the positive copper rod 7 and the two negative copper rods 8 of the rock mass simulation test piece 17 are respectively connected to the positive and negative output ends of the high-voltage pulse energy storage device 18. The voltage of the high-voltage pulse energy storage device 18 is adjusted to 40kv according to the test requirement; then the multi-wire simultaneous initiation is carried out by using the pulse trigger 19.

[0065] Step 8: after the blasting is completed, the load and the cushion block 21 of the biaxial loading device 20 are removed;

[0066] Step 9: the high-speed camera 16 is closed, and the camera shooting data is exported; the blasting fragments are collected.

[0067] In the embodiment, the three middle holes of the electrode fixing cross beam 6 correspond to one positive copper rod 7 and two negative copper rods 8 of the multi-purpose multi-wire initiation network respectively, the hole diameters are all less than 0.1mm of the electrode copper rod diameter, and the material is pine.

[0068] In the embodiment, referring to Figure 4 , the positive electrode fixed insulating rod 2 is made of polyethylene material, the positive fixed hole 13 has the same diameter of 4mm as the diameter of the positive copper rod 7, and the hole depth is appropriately lengthened to 20mm, so that the positive copper rod 7 is completely inserted into the positive electrode fixed insulating rod 2.

[0069] In the embodiment, referring to Figure 5 The multi-wire initiation network is a simulation design of simulating the initiation of double-borehole slotting blasting, one positive copper rod 7 and two negative copper rods 8 are designed, and the needs of simultaneous initiation or millisecond initiation simulation can be met by sharing the negative electrode or using the negative electrode alone.

[0070] The above embodiments are only preferred technical solutions of the present application, and should not be regarded as limitations of the present application. The embodiments in the application and the features in the embodiments can be combined with each other without conflict. The protection scope of the present application should be based on the technical solutions recorded in the claims, including the equivalent replacement solutions of the technical features recorded in the claims. That is, the equivalent replacement and improvement within the scope should be within the protection scope of the present application. The above is only the preferred specific implementation manner of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can make equivalent replacement or change according to the technical solutions and the inventive concept of the present application within the technical scope disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A simulation device for deep in-mine cut blasting, characterized in that, The rock mass simulation test piece is arranged in the biaxial loading unit and comprises a forming base, a mold, a first electrode, a second electrode, a connecting part and a fixing beam. The rock mass simulation test piece comprises a forming base, a mold, a first electrode, a second electrode, a connecting part and a fixing beam. The biaxial loading unit comprises a biaxial loader and a controller. The first electrode comprises a fixed insulating rod and a first connecting rod. The second electrode comprises a hollow forming metal rod and a second connecting rod. The connecting part comprises a connecting copper rod and a metal wire. The first electrode is arranged as a positive electrode, and one first electrode is arranged.

2. A simulation device for deep gallery cut blasting according to claim 1, characterized in that, The second electrode is arranged as a negative electrode, and two or more second electrodes are arranged. The hollow forming metal rod is arranged in multiple. The number of the second connecting rods corresponds to the number of the hollow forming metal rods.

3. A simulation device for deep tunnel cut blasting according to any one of claims 1-2, characterized in that, The fixed crossbeam is provided with a first fixing hole, a second fixing hole and a threaded hole, the first electrode extends to the outside of the mold through the first fixing hole, the second electrode extends to the outside of the mold through the second fixing hole, the mold is provided with a corresponding connecting hole at the connecting position with the fixed crossbeam, and the fixed crossbeam and the mold are detachably connected through the fixed bolt in the threaded hole and the connecting hole.

4. A simulation device for deep gallery cut blasting according to claim 3, characterized in that, The middle part of the shaped base is provided with an outwardly protruding boss, the first electrode is connected to the boss of the shaped base, the second electrode is connected to a position outside the boss of the shaped base, and the shaped base is provided with a blowing hole, which is arranged on the boss of the shaped base.

5. A simulation device for deep gallery cut blasting according to claim 4, wherein, The double-axis loader is electrically connected with a high-voltage pulse energy storage device, the high-voltage pulse energy storage device is electrically connected with a pulse trigger, and a high-speed camera for observation is further arranged on the outer side of the double-axis loader.

6. A loading method for a simulation device for deep gallery cut blasting, by installing the loading method for a simulation device for deep gallery cut blasting according to any one of claims 1 to 5, characterized in that The method comprises the following steps: S1: determining the size of the excavation roadway and the real surrounding rock stress on site through on-site investigation, designing the size of the rock mass simulation test piece according to the size of the excavation roadway, and determining the size of the rock mass simulation test piece; S2: setting a first electrode and two or more second electrodes, setting multiple groups of metal wire initiation networks, and connecting each group of metal wire initiation networks to a first electrode and a second electrode through independent connecting parts; S3: fixing the first electrode and the second electrode at corresponding positions in the mold, installing the fixed crossbeam on the opening side of the mold, and pulling the upper ends of the first electrode and the second electrode out of the mold from the inside to the outside through the fixed crossbeam; S4: configuring the shaped base material by using coarse quartz stone, fine quartz stone, cement and water, pouring the configured material into the assembled mold to form the shaped base, pre-burying the blowing hole on the shaped base before pouring, and vibrating during pouring until no bubbles are generated; S5: demolding when the internal pouring material of the poured rock mass simulation test piece reaches a certain strength, blowing air from the blowing hole to the shaped base by using an air pump during demolding to form a blasting test piece; S6: treating the surface of the blasting test piece, observing the surface stress change process, placing the rock mass simulation test piece in the double-axis loader, applying corresponding stress to the rock mass simulation test piece according to the measured stress, connecting the high-speed camera, and making observation preparation; S7: connecting the first electrode and the second electrode of the rock mass simulation test piece to the positive and negative output ends of the high-voltage pulse energy storage device, adjusting the voltage of the high-voltage pulse energy storage device according to the experimental requirements, and using the pulse energy storage device for initiation.

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