Roadway multidirectional shaped charge blasting joint-cutting presplitting pressure relief device

Abstract

The utility model discloses a roadway multidirectional shaped charge blasting joint-cutting presplitting pressure relief device which comprises a connecting base, notches are formed in the two sides of the lower side of the connecting base, connecting pieces are rotationally connected to the notches, limiting pieces are connected to the lower sides of the connecting pieces, limiting blocks are arranged on the lower side of the connecting base, and the limiting blocks are connected with the connecting pieces. An energy gathering pipe is inserted into the lower side of the limiting block, and limiting assemblies are evenly arranged on the inner side of the connecting piece. The utility model relates to the technical field of roadway construction, through the cooperation of the connecting seat, the connecting piece and the limiting piece, the energy-gathering pipe can be clamped and fixed, the energy-gathering grooves on the two sides of the energy-gathering pipe are exposed, the overall blasting performance of the energy-gathering pipe cannot be influenced, and meanwhile, a plurality of groups of arched rubber elastic blocks are arranged on the outer side of the connecting piece. And the plugging tightness of the device and the blast hole is improved, and the device is prevented from sliding down.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel construction, in particular to a tunnel multi-directional concentrated energy blasting cutting seam pre-splitting pressure relief device. Background Art

[0002] The tunnel blasting and pre-cracking pressure relief technology mainly uses the method of blasting with a focused tube to pre-cracking and destroy the roof pressure layer. Through carefully designed blasting parameters and the structure of the focused tube, precise cracks can be formed on the tunnel rock wall. These cracks help to cut off or reduce the force transmitted by the rock beam to the adjacent coal body, thereby achieving the purpose of pressure relief.

[0003] However, after the blasting device for blasting pre-splitting and pressure relief is inserted into the blasting hole, the diameter of the blasting hole and the blasting device may not match, causing the blasting device to slide down, which may easily affect the blasting structure; at the same time, due to the difference in rock properties, the blasting hole is prone to collapse, and the operator may easily encounter problems such as pipe jamming or difficulty in pulling the pipe back after jamming when inserting the blasting device into the blasting hole. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a tunnel multi-directional concentrated energy blasting cutting seam pre-splitting pressure relief device, which has the characteristics of easy operation and fixation and good blasting effect.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a tunnel multi-directional energy-gathering blasting seam pre-splitting pressure relief device, comprising a connecting seat, notches are provided on both sides of the lower side of the connecting seat, a connecting piece is rotatably connected to the notch, a limit piece is connected to the lower side of the connecting piece, a limit block is provided on the lower side of the connecting seat, an energy-gathering tube is plugged into the lower side of the limit block, and limit components are evenly provided on the inner side of the connecting piece;

[0006] A filling port is provided in the middle of the limiting piece, connecting blocks are provided on both sides of the lower side of the limiting piece, a through hole is provided in the middle of the connecting block, bolts and nuts are connected to the through hole, and a row of rubber elastic blocks are evenly provided on the outside of the connecting piece.

[0007] In the above solution, the limiting assembly includes a fixing seat arranged on the inner side of the connecting piece, a rubber clamping block is inserted on the upper side of the fixing seat, springs are arranged on both sides of the fixing seat, and one side of the spring is connected to the lower side of the rubber clamping block.

[0008] In the above solution, the upper side of the connecting seat is configured to be conical.

[0009] In the above solution, a handle is provided on the lower side of the limiting piece.

[0010] In the above solution, V-shaped grooves corresponding to the front and rear sides of the energy-gathering tube are provided on both the front and rear sides of the limiting block.

[0011] In the above solution, the rubber elastic block is configured as an arch as a whole, and an arc-shaped notch is provided on the upper side of the rubber clamping block.

[0012] Beneficial effects of the utility model:

[0013] 1. The energy-gathering tube can be clamped and fixed by the cooperation of the connecting seat, connecting piece and limiting piece, and the energy-gathering grooves on both sides of the energy-gathering tube are exposed, which will not affect the overall blasting performance of the energy-gathering tube. At the same time, multiple groups of arched rubber elastic blocks are arranged on the outside of the connecting piece to increase the tightness of the connection between the device and the blasting hole and prevent the device from sliding down.

[0014] 2. Multiple groups of limit components are set on the inner side of the connecting piece, and limit blocks are set on the lower side of the connecting seat, which can increase the fixing effect of the energy-gathering tube and prevent the position of the energy-gathering tube from shifting. At the same time, a handle is added to facilitate the operator to move the position of the device without affecting the blasting effect of the energy-gathering tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model in the expanded state.

[0016] Figure 2 This is a schematic diagram of the main structure of the utility model in the expanded state.

[0017] Figure 3 It is a schematic diagram of the three-dimensional structure of the utility model in the contracted state.

[0018] Figure 4 It is a schematic diagram of the structure of the utility model in the unfolded state when viewed from above.

[0019] Figure 5 This is a schematic cross-sectional structural diagram of the fixing seat of the present invention.

[0020] In the figure: 1. Connecting seat, 2. Connecting piece, 3. Limiting piece, 4. Limiting block, 5. Energy-gathering tube, 6. Filling port, 7. Connecting block, 8. Rubber elastic block, 9. Fixing seat, 10. Rubber clamping block, 11. Spring, 12. Handle. DETAILED DESCRIPTION

[0021] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative work shall fall within the scope of protection of the present invention.

[0022] like Figure 1-5As shown, a tunnel multi-directional focused blasting seam pre-splitting and pressure relief device includes a connecting base 1 with notches on both sides of its underside. Connecting pieces 2 are rotatably connected to the notches. A limit piece 3 is connected to the underside of the connecting piece 2. A limit block 4 is provided on the underside of the connecting base 1. A focused energy tube 5 is inserted under the limit block 4. Limiting components are evenly distributed on the inside of the connecting piece 2.

[0023] A filling port 6 is provided in the middle of the limiting piece 3, and connecting blocks 7 are provided on both sides of the lower side of the limiting piece 3. A through hole is provided in the middle of the connecting block 7, and bolts and nuts are connected to the through hole. A row of rubber elastic blocks 8 are evenly arranged on the outside of the connecting piece 2.

[0024] The limiting assembly includes a fixing seat 9 arranged on the inner side of the connecting piece 2, a rubber clamping block 10 is inserted on the upper side of the fixing seat 9, and springs 11 are provided on both sides of the fixing seat 9, one side of the spring 11 is connected to the lower side of the rubber clamping block 10.

[0025] The upper side of the connecting seat 1 is set to be conical, which makes it easier for the operator to insert the device into the blasting hole.

[0026] A handle 12 is provided on the lower side of the limiting piece 3 to facilitate movement and adjustment of the position of the device after the device is inserted into the blasting hole.

[0027] The front and rear sides of the limiting block 4 are both provided with V-shaped grooves corresponding to the front and rear sides of the energy-gathering tube 5, so as to facilitate limiting the position of the energy-gathering tube 5.

[0028] The rubber elastic block 8 is designed as a whole to be arched, which is used to increase the fixing effect of the device when inserted into the blasting hole. An arc-shaped notch is provided on the upper side of the rubber clamping block 10 to increase the contact area between the rubber clamping block 10 and the energy-gathering tube 5, thereby increasing the fixing effect of the energy-gathering tube 5.

[0029] It should be noted that when performing the tunnel blasting and pre-cracking pressure relief operation, it is necessary to use the energy-gathering tube 5 blasting method to pre-cracking and destroy the top plate pressure layer in advance. At this time, the operator plugs the upper side of the energy-gathering tube 5 with the limit block 4, wherein the overall length of the limit block 4 is very short and will not affect the overall blasting performance of the energy-gathering tube 5. Then the operator rotates the two connecting pieces 2 located on the lower side of the connecting seat 1 so that the two connecting pieces 2 clamp the energy-gathering tube 5. At the same time, the fixing seat 9, spring 11 and rubber clamping block 10 located on the inner side of the connecting piece 2 cooperate to increase the clamping effect of the energy-gathering tube 5 and prevent the energy-gathering tube 5 from loosening and causing position displacement.

[0030] After the energy-gathering tube 5 is clamped, the lower sides of the two limiting plates 3 can be connected by means of bolts and nuts, thereby completing the connection between the connecting plates 2. At this time, the operator can fill the energy-gathering tube 5 with explosives through the filling port 6 in the middle part of the limiting plate 3. At this time, the operator can insert the device into the blasting hole, thereby achieving the purpose of pre-cracking and pressure relief of the tunnel blasting seam. After the device is inserted into the blasting hole, the rubber elastic block 8 is squeezed by the hole wall and elastically deformed, thereby increasing the contact area between the device and the hole wall, thereby preventing the device from sliding down inside the blasting hole and increasing the blasting effect of the device.

[0031] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A tunnel multi-directional concentrated energy blasting seam pre-splitting pressure relief device, comprising a connecting seat (1), characterized in that: Notches are provided on both sides of the lower side of the connecting seat (1), a connecting piece (2) is rotatably connected to the notch, a limiting piece (3) is connected to the lower side of the connecting piece (2), a limiting block (4) is provided on the lower side of the connecting seat (1), an energy-gathering tube (5) is plugged into the lower side of the limiting block (4), and limiting components are evenly provided on the inner side of the connecting piece (2); A filling port (6) is provided in the middle of the limiting piece (3), connecting blocks (7) are provided on both sides of the lower side of the limiting piece (3), a through hole is provided in the middle of the connecting block (7), bolts and nuts are connected to the through hole, and a row of rubber elastic blocks (8) are evenly provided on the outside of the connecting piece (2).

2. A tunnel multi-directional concentrated energy blasting crack pre-splitting pressure relief device according to claim 1, characterized in that: The limiting assembly comprises a fixing seat (9) arranged on the inner side of the connecting piece (2), a rubber clamping block (10) is inserted on the upper side of the fixing seat (9), and springs (11) are arranged on both sides of the interior of the fixing seat (9), and one side of the spring (11) is connected to the lower side of the rubber clamping block (10).

3. The tunnel multi-directional concentrated energy blasting pre-splitting pressure relief device according to claim 1 is characterized in that: The upper side of the connecting seat (1) is configured to be conical.

4. The tunnel multi-directional concentrated energy blasting pre-splitting pressure relief device according to claim 1 is characterized in that: A handle (12) is provided on the lower side of the limiting piece (3).

5. The tunnel multi-directional concentrated energy blasting pre-splitting pressure relief device according to claim 1 is characterized in that: The front and rear sides of the limit block (4) are both provided with V-shaped grooves corresponding to the front and rear sides of the energy-gathering tube (5).

6. The tunnel multi-directional concentrated energy blasting pre-splitting pressure relief device according to claim 2, characterized in that: The rubber elastic block (8) is configured as an arch as a whole, and an arc-shaped notch is provided on the upper side of the rubber clamping block (10).

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