A deep rock excavation water inrush disaster testing device

Abstract

The present invention discloses a deep rock excavation water inrush disaster testing device, comprising a test box, a pressurizing device arranged on the upper side of the test box, a simulated surrounding rock arranged in the test box, an excavation channel arranged at the lower part of the simulated surrounding rock, a rigid protective pipe arranged inside the simulated surrounding rock, through grooves arranged at intervals on the arc surface of the rigid protective pipe, a test water pipe arranged inside the rigid protective pipe, at least two partitions buried in the simulated surrounding rock, and a crushing device arranged between the two partitions. The present invention can perform water inrush tests in different areas by filling simulated surrounding rock in the test box, setting an excavation channel, and setting partitions at corresponding positions of the excavation channel to delimit the test area; after the test is completed, the simulated surrounding rock at the water inrush position is crushed and removed, and then refilled and poured to fill, so that the test scene can be quickly restored, which is convenient for retesting after changing the test parameters, thereby improving the test efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of rock mass excavation water inrush testing, and in particular to a deep rock mass excavation water inrush disaster testing device. Background Art

[0002] When tunnel construction encounters loose and broken rock masses, the stability is reduced, the surrounding rock deforms and cracks, forming a large number of fissures, which can induce geological disasters such as water gushing and landslides.

[0003] The existing technology uses indoor model test research, and the model required to be built is time-consuming and labor-intensive. On the one hand, the sudden water causes large-scale flooding and damage to the model, affecting the comparative test. On the other hand, the amount of engineering required to replace the rock mass is large, resulting in a long delay in subsequent tests. Summary of the invention

[0004] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a deep rock excavation water inrush disaster testing device, which solves the technical problem of the long repeated test cycle of the existing simulation test device.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A deep rock excavation water inrush disaster testing device comprises a test box, a pressurizing device is arranged on the upper side of the test box, a simulated surrounding rock is arranged inside the test box, an excavation channel is arranged below the simulated surrounding rock, a rigid protective pipe is arranged inside the simulated surrounding rock, through grooves are arranged at intervals on the arc surface of the rigid protective pipe, a test water pipe is arranged inside the rigid protective pipe, at least two partitions are buried in the simulated surrounding rock, and a crushing device is arranged between the two partitions.

[0007] Preferably, the crushing device comprises two clamping plates, a slider is arranged on one side of each clamping plate, and a slide groove is arranged on the opposite side of the two partitions, the lower end of the slide groove is an open structure, and the slider is adapted to the slide groove;

[0008] The bottom of the clamping plate is fixedly connected to the traction column.

[0009] Preferably, it also includes a traction device, which includes a mobile car, the upper side of the mobile car is rotatably connected to the telescopic arm, the telescopic end of the telescopic arm is fixedly connected to the arc guide rail, the arc guide rail is slidably connected to two sliding sleeves, and the two sides of the arc guide rail are respectively hingedly connected to a hydraulic rod, and the hydraulic rod is hingedly connected to the sliding sleeve in a one-to-one correspondence;

[0010] The sliding sleeve is threadedly connected to the traction column.

[0011] Preferably, the sliding sleeve is slidably connected to the support rod, the upper end of the support rod is threadedly connected to the traction column, an avoidance groove is arranged inside the sliding hole of the sliding sleeve, the support rod extends into the avoidance groove and is fixedly connected to the arc-shaped boss, a support spring is fixedly connected between the arc-shaped boss and the inner wall of the avoidance groove, the arc-shaped guide rail is fixedly connected to the arc-shaped convex block at intervals, the arc-shaped convex block is arranged correspondingly to the arc-shaped boss, and the two sliding sleeves are staggered relative to the arc-shaped convex block;

[0012] The clamping plate is provided with a through hole, and the diameter of the through hole is larger than the diameter of the rigid protective tube.

[0013] Preferably, the upper ends of the two clamping plates on one side opposite to each other are fixedly connected to the crushing teeth.

[0014] Preferably, the upper side of the partition is fixedly connected with an anchor rod.

[0015] Preferably, the test water pipe is a hose, one side of the test water pipe is fixedly connected to a rubber plug, the rubber plug is provided with a tapered hole, the side of the tapered hole facing the inside of the test water pipe is the large end, an annular groove is provided on the outer wall of the test water pipe, and the annular groove is provided corresponding to the partition.

[0016] The advantages of the present invention are as follows: a deep rock excavation water inrush disaster testing device provided by the present invention can carry out water inrush tests in different areas by filling simulated surrounding rock in a test box, setting an excavation channel, and setting partitions at corresponding positions of the excavation channel to demarcate the test area; after the test is completed, the simulated surrounding rock at the water inrush position is crushed and removed, and then refilled and poured, so that the test scene can be quickly restored, which is convenient for retesting after changing the test parameters, thereby improving the test efficiency.

[0017] The present invention uses two sliding sleeves to bring the clamping plates closer to each other, and the arc-shaped boss moves to the position of the arc-shaped convex block to enable the support rod and the corresponding clamping plate to slide upward. The two clamping plates are in a state of one high and one low and can alternate, so that the fragments between them are crushed and filed, the crushing effect is improved, and the cleaning effect is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a basic structural schematic diagram of the present invention;

[0019] Figure 2 It is a schematic diagram of the structure of the crushing device;

[0020] Figure 3 yes Figure 2 A local enlarged view of point F in FIG.

[0021] Figure 4 It is a cross-sectional view of the test water pipe. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. Example 1

[0023] like Figures 1 to 4 As shown, a deep rock excavation water inrush disaster test device provided by the present invention comprises a test box 1, a pressurizing device 2 is arranged on the upper side of the test box 1, the pressurizing device 2 is a hydraulic cylinder or a counterweight, so that the surrounding rock maintains high pressure, which is used to simulate the pressure environment of the surrounding rock at depth, a simulated surrounding rock 3 is arranged in the test box 1, the simulated surrounding rock 3 is prepared by using the existing technology ratio, and is selected according to the surrounding rock strength required for the specific test, an excavation channel 4 is arranged at the lower part of the simulated surrounding rock 3, and the excavation and support are carried out by using the mining method, a rigid protective pipe 5 is arranged inside the simulated surrounding rock 3, through grooves 51 are arranged at intervals on the arc surface of the rigid protective pipe 5, and a test water Tube 6, at least two partitions 7 are buried in the simulated surrounding rock 3, multiple groups of partitions 7 can be set according to needs, cracks are preset in the simulated surrounding rock 3 between the partitions 7, the partitions 7 are set in a normal direction to the excavation channel 4, and the impact on the loading force above is small, a crushing device 8 is set between the two partitions 7, the test water pipe 6 is a hose, one side of the test water pipe 6 is fixedly connected to a rubber plug 61, the rubber plug 61 is provided with a tapered hole 62, the side of the tapered hole 62 facing the inside of the test water pipe 6 is the large end, and the small end of the tapered hole 62 is closed due to the elasticity of the rubber plug 61, and an annular groove 63 is set on the outer wall of the test water pipe 6, and the annular groove 63 is set corresponding to the partition 7.

[0024] The test water pipe 6 does not expand before being filled with water, and its position can be adjusted in the rigid protective pipe 5. The rubber plug 61 is aligned with the through groove 51 on the top or the through groove 51 on the side wall, so as to form water gushing leakage on the top wall or the side wall of the excavated channel 4 in a targeted manner, so as to facilitate the testing of leak plugging or leakage risk elimination at different positions. After the test water pipe 6 is adjusted into place, it is filled with water and expanded so that the annular groove 63 wraps the through hole of the partition 7, forming a pressure water source in the simulated surrounding rock 3 of the partition 7. During the test, the water is further pressurized and injected, so that the high-pressure water flow pushes open the small end of the tapered hole 62 of the rubber plug 61, and is injected into the surrounding rock, gushing out from the pre-set cracks 10, simulating the occurrence of a sudden water disaster.

[0025] The present invention demarcates the test area by filling simulated surrounding rock 3 in the test box 1, setting an excavation channel 4, and setting partitions 7 at corresponding positions of the excavation channel 4, so as to be able to carry out water inrush tests in different areas; after the test is completed, the simulated surrounding rock 3 at the water inrush position is crushed and removed, and then refilled with pouring, so that the test scene can be quickly restored, which is convenient for retesting after changing the test parameters, thereby improving the test efficiency. Example 2

[0026] This embodiment also provides a crushing device 8, such as Figures 1 to 4 As shown, the crushing device 8 includes two clamping plates 81, a slider 82 is provided on one side of each clamping plate 81, and a slide groove 83 is provided on the opposite side of the two partitions 7. The lower end of the slide groove 83 is an open structure, and the slider 82 is adapted to the slide groove 83. The clamping plate 81 and the partition 7 are buried in the simulated surrounding rock 3 together. After the clamping plate 81 is pulled downward, the slider 82 is separated from the slide groove 83, and the two clamping plates 81 can be close to each other for crushing;

[0027] The bottom of the clamping plate 81 is fixedly connected to a traction column 84, which extends out of the simulated surrounding rock 3. The local area after the water inrush test is peeled off by traction. When the reinforcement strength of the area exceeds the direct traction crushing, it is crushed together with the impact drill and the breaker hammer.

[0028] The crushing device 8 also includes a traction device, which includes a mobile vehicle, the upper side of which is rotatably connected to a telescopic arm 85, the telescopic arm 85 is hydraulic, the telescopic end of the telescopic arm 85 is fixedly connected to an arc guide rail 86, two sliding sleeves 87 are slidably connected to the arc guide rail 86, and a hydraulic rod 88 is respectively hingedly connected to both sides of the arc guide rail 86, and the hydraulic rod 88 is hingedly connected to the sliding sleeve 87 in a one-to-one correspondence;

[0029] In this embodiment, the sleeve 87 is threadedly connected to the traction column 84. After the water inrush test, the sleeve 87 is fixedly connected to the traction column 84 one by one by moving to the position of the traction column 84. The two hydraulic rods 88 are extended to push the two sleeves 87 toward each other, so as to push the two clamping plates 81 that are separated from the partition 7 to approach each other and crush the simulated surrounding rock 3 between them, so as to facilitate and quickly clear the simulated surrounding rock 3 affected by flooding after the water inrush, and facilitate subsequent rapid repair for subsequent tests. Example 3

[0030] This embodiment also provides a further structure of a crushing device 8, such as Figures 1 to 4 As shown, the sliding sleeve 87 is slidably connected to the support rod 871, the upper end of the support rod 871 is threadedly connected to the traction column 84, the sliding hole of the sliding sleeve 87 is provided with an avoidance groove 872, the support rod 871 extends into the avoidance groove 872 and is fixedly connected to the arc-shaped boss 873, the arc-shaped boss 873 and the inner wall of the avoidance groove 872 are fixedly connected to the support spring 874, the arc-shaped guide rail 86 is fixedly connected to the arc-shaped protrusion 875 at intervals, the arc-shaped protrusion 875 is correspondingly arranged with the arc-shaped boss 873, and the two sliding sleeves 87 are staggered relative to the arc-shaped protrusion 875;

[0031] The clamping plate 81 is provided with a through hole 811 . The diameter of the through hole 811 is larger than the diameter of the rigid protective tube 5 . The clamping plate 81 reciprocates within the gap between the through hole 811 and the rigid protective tube 5 .

[0032] The upper ends of the two clamping plates 81 on the opposite sides are fixedly connected with crushing teeth, which are on the side and top surfaces. The crushing teeth on the top surface can chisel the remaining simulated surrounding rock 3 into a rough surface through collision, which is convenient for the combination of subsequent filling materials.

[0033] An anchor rod 71 is fixedly connected to the upper side of the partition 7 to reinforce the partition 7 and keep the partition 7 stable during the process of separating the clamping plate 81.

[0034] In this embodiment, when the two sliding sleeves 87 bring the clamping plates 81 closer to each other, the arc-shaped boss 873 moves to the position of the arc-shaped protrusion 875, allowing the support rod 871 and the corresponding clamping plate 81 to slide upward. The two clamping plates 81 are in a high and low state and can alternate, thereby crushing and filing the fragments between them, improving the crushing effect, and facilitating improving the cleaning effect.

[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A deep rock excavation water inrush disaster testing device, comprising a test box (1), a pressurizing device (2) arranged on the upper side of the test box (1), a simulated surrounding rock (3) arranged inside the test box (1), an excavation channel (4) arranged below the simulated surrounding rock (3), a rigid protective pipe (5) arranged inside the simulated surrounding rock (3), through grooves (51) arranged at intervals on the inner arc surface of the rigid protective pipe (5), and a test water pipe (6) arranged inside the rigid protective pipe (5), characterized in that: At least two partitions (7) are buried in the simulated surrounding rock (3), and a crushing device (8) is arranged between the two partitions (7); The crushing device (8) comprises two clamping plates (81), a slider (82) is arranged on one side of each clamping plate (81), and a slide groove (83) is arranged on the opposite side of the two partition plates (7), the lower end of the slide groove (83) is an open structure, and the slider (82) is adapted to the slide groove (83); The bottom of the clamping plate (81) is fixedly connected to a traction column (84); The test water pipe (6) is provided with a rubber plug (61) for causing water seepage on the wall of the excavated channel (4).

2. A deep rock excavation water inrush disaster testing device according to claim 1, characterized in that: The device also includes a traction device, which includes a mobile vehicle, the upper side of which is rotatably connected to a telescopic arm (85), the telescopic end of the telescopic arm (85) is fixedly connected to an arc-shaped guide rail (86), two sliding sleeves (87) are slidably connected to the arc-shaped guide rail (86), and two sides of the arc-shaped guide rail (86) are respectively hingedly connected to a hydraulic rod (88), and the hydraulic rod (88) is hingedly connected to the sliding sleeve (87) in a one-to-one correspondence; The sliding sleeve (87) is threadedly connected to the traction column (84).

3. A deep rock excavation water inrush disaster testing device according to claim 2, characterized in that: The sliding sleeve (87) is slidably connected to the support rod (871), the upper end of the support rod (871) is threadedly connected to the traction column (84), an avoidance groove (872) is arranged inside the sliding hole of the sliding sleeve (87), the support rod (871) extends into the avoidance groove (872) and is fixedly connected to the arc-shaped boss (873), a support spring (874) is fixedly connected between the arc-shaped boss (873) and the inner wall of the avoidance groove (872), the arc-shaped guide rail (86) is fixedly connected to the arc-shaped protrusion (875) at intervals, the arc-shaped protrusion (875) and the arc-shaped boss (873) are arranged correspondingly, and the two sliding sleeves (87) are arranged offset relative to the arc-shaped protrusion (875); The clamping plate (81) is provided with a through hole (811), and the diameter of the through hole (811) is greater than the diameter of the rigid protective tube (5).

4. A deep rock excavation water inrush disaster testing device according to claim 1, characterized in that: The upper ends of the two clamping plates (81) on one side opposite to each other are fixedly connected to the crushing teeth.

5. The deep rock excavation water inrush disaster testing device according to claim 1, characterized in that: The upper side of the partition plate (7) is fixedly connected to an anchor rod (71).

6. The deep rock excavation water inrush disaster testing device according to claim 1, characterized in that: The test water pipe (6) is a hose. One side of the test water pipe (6) is fixedly connected to a rubber plug (61). The rubber plug (61) is provided with a tapered hole (62). The side of the tapered hole (62) facing the inside of the test water pipe (6) is a large end. An annular groove (63) is provided on the outer wall of the test water pipe (6), and the annular groove (63) is provided corresponding to the partition plate (7).

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