Rockburst pre-burying device applied to underground mine roadway engineering

Abstract

The utility model discloses a rockburst pre-burying device applied to underground mine roadway engineering. The rockburst pre-burying device comprises a pre-burying base, a pre-burying groove and a stress assembly. The pre-buried groove and the pre-buried base are integrally formed, and the stress assembly is installed on the pre-buried groove; through drilling of the conical block, active prevention can be conducted before rock burst occurs, the conical block is pushed by the anchor rod to be embedded into the roadway wall, and accumulated stress is released in advance; therefore, the occurrence probability of rock burst and the potential damage degree are reduced.

Description

Technical Field

[0001] The utility model relates to a rock burst pre-embedded device applied to underground mine tunnel engineering, belonging to the field. Background Art

[0002] Rockbursts are a common geological hazard in underground mine tunnels, posing a serious threat to tunnel safety and stability. Rockbursts are typically caused by the sudden release of stress in the rock surrounding the tunnel, which exceeds its bearing capacity. This release can be accompanied by the ejection of rock fragments, causing damage to equipment and personnel within the tunnel.

[0003] Traditional rockburst prevention and control measures mainly include tunnel reinforcement, excavation of stress relief holes and use of other support structures.

[0004] However, these methods often have problems such as complex construction, high costs, and limited effectiveness. Especially when the tunnel is under high stress, traditional support structures may be unable to withstand the sudden release of stress, resulting in support failure.

[0005] Therefore, a more effective, economical and easy-to-implement rockburst prevention measure is needed to deal with the rockburst risk in underground mine tunnel engineering. Utility Model Content

[0006] In view of the deficiencies in the prior art, the present invention aims to provide a rockburst pre-embedded device for use in underground mine tunnel engineering to solve the problem.

[0007] In order to achieve the above-mentioned object, the present invention is implemented through the following technical solutions: a rock burst pre-embedded device applied to underground mine tunnel engineering, comprising a pre-embedded seat, a pre-embedded groove, and a stress component; the pre-embedded groove and the pre-embedded seat are integrally formed, and the stress component is installed on the pre-embedded groove;

[0008] The stress assembly includes a limiting cylinder, a conical block, and an anchor rod arranged on the embedded groove; the conical block is located in the limiting cylinder, and the puncturing end of the conical block faces the tunnel wall; the conical block is fixedly connected to the anchor rod, so that the anchor rod pushes the conical block to move toward the tunnel wall in the limiting cylinder.

[0009] Preferably, the embedded seat is disc-shaped.

[0010] Preferably, the embedded groove includes a first embedded groove and a second embedded groove; the first embedded groove is arranged in the middle of the embedded seat; the second embedded groove is strip-shaped, and a plurality of the second embedded grooves are distributed in an annular shape on the embedded seat.

[0011] Preferably, the embedded seat is provided with a plurality of bolts, and the bolts are used to fix the embedded seat to the tunnel wall.

[0012] Preferably, the anchor rod is connected to an existing hydraulic component so that the anchor rod pushes the conical block.

[0013] Preferably, the tapered block is conical.

[0014] Preferably, the length of the second embedded groove is greater than the diameter of the limiting cylinder, and the limiting cylinder is located in the middle of the second embedded groove, so that the second embedded groove reserves slag discharge ports on both sides of the limiting cylinder.

[0015] Preferably, a plurality of slag discharge grooves are provided in an annular distribution at the end of the limiting cylinder; the slag discharge grooves are communicated with the slag discharge port.

[0016] Beneficial effects

[0017] The utility model can take active measures to prevent rock bursts before they occur by drilling the conical blocks, and push the conical blocks into the tunnel wall through the anchor rods to release the accumulated stress in advance, thereby reducing the probability of rock bursts and the potential degree of damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Other features, objects and advantages of the present invention will become more apparent from the detailed description of the non-limiting embodiments with reference to the following drawings:

[0019] Figure 1 This is a structural schematic diagram of a rock burst pre-embedded device used in underground mine tunnel engineering according to the present utility model;

[0020] Figure 2 This is a side structural diagram of the stress component of the present invention;

[0021] Figure 3 It is a structural diagram of the limiting cylinder of the utility model. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0023] See also Figure 1-Figure 3 The present invention provides a rock burst pre-embedded device for underground mine tunnel engineering, which is used for installation on the tunnel wall. The technical solution includes a pre-embedded seat 1, a pre-embedded groove, and a stress component; the pre-embedded groove and the pre-embedded seat 1 are integrally formed, and the stress component is installed on the pre-embedded groove;

[0024] The stress assembly includes a limiting cylinder 41, a conical block 42, and an anchor rod 43 arranged on the embedded groove; the conical block 42 is located in the limiting cylinder 41, and the piercing end 421 of the conical block 42 is facing the tunnel wall; the conical block 42 is fixedly connected to the anchor rod 43, so that the anchor rod 43 pushes the conical block 42 to move toward the tunnel wall in the limiting cylinder 41.

[0025] Furthermore, the anchor rod 43 is connected to an existing hydraulic component (not shown in the figure), so that the anchor rod 43 pushes the conical block 42 .

[0026] Furthermore, the embedded seat 1 is disc-shaped, and a plurality of bolts are provided on the embedded seat 1, and the bolts are used to fix the embedded seat 1 to the tunnel wall.

[0027] Furthermore, the embedded groove includes a first embedded groove 21 and a second embedded groove 22; the first embedded groove 21 is disposed in the middle of the embedded seat 1. In one embodiment, a hole is drilled in the tunnel wall corresponding to the first embedded groove 21 for installing existing monitoring equipment such as stress sensors, which are connected to an existing central control system via a data cable to achieve monitoring purposes.

[0028] Preferably, the second pre-buried groove 22 is strip-shaped, with several of them distributed in a ring around the pre-buried seat 1. The length of the second pre-buried groove 22 is greater than the diameter of the limiting cylinder 41, and the limiting cylinder 41 is located in the middle of the second pre-buried groove 22, allowing the second pre-buried groove 22 to reserve slag discharge openings A on both sides of the limiting cylinder 41. Several slag discharge grooves B are distributed in a ring around the end of the limiting cylinder 41, and the slag discharge grooves B communicate with the slag discharge openings A. In this way, when the anchor rod 43 pushes the conical block 42, the conical block 42 gradually embeds into the roadway wall, and the rock and soil on the roadway wall are discharged through the slag discharge grooves B and the slag discharge openings A, reducing the pressure of the conical block 42 drilling into the roadway.

[0029] Preferably, the conical block 42 is conical in shape. The conical block 42 reduces the pressure during drilling and ensures the effective dispersion of stress energy in the tunnel wall, thereby reducing the risk of excessive stress concentration at a single point. During the movement of the conical block 42 toward the front of the tunnel wall, its gradually increasing contact area effectively disperses and releases the stress energy accumulated in the tunnel wall. Through this orderly and controllable energy release method, the conical block 42 can significantly reduce the probability of rock burst and the potential degree of damage.

[0030] The conical block 42 is made of hard alloy, so that it can be effectively embedded in rock and soil under high pressure, thereby releasing or dispersing stress.

[0031] Working principle: First, fix the embedded seat 1 to the tunnel wall with bolts. The embedded groove and embedded seat 1 are integrally formed to ensure the stability and reliability of the device.

[0032] When the rock stress around the tunnel reaches a certain level, the anchor rod 43 is pushed by hydraulic components or other driving mechanisms, causing the anchor rod 43 to drive the conical block 42 to move toward the tunnel wall in the limiting cylinder 41; the piercing end 421 of the conical block 42 faces the tunnel wall, and as the anchor rod 43 pushes, the conical block 42 gradually embeds into the tunnel wall.

[0033] During the process of the conical block 42 being embedded in the tunnel wall, its shape and material ensure effective stress dispersion; the conical design of the conical block 42 gradually increases its contact area, thereby dispersing the stress energy accumulated in the tunnel wall.

[0034] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, from all points of view, the embodiments should be regarded as illustrative and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes that fall within the meaning and range of equivalents of the claims are included in the present invention. Any reference signs in the claims should not be construed as limiting the claim to which they relate.

[0035] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A rockburst pre-embedded device used in underground mine tunnel engineering, characterized by: It includes an embedded seat, an embedded groove, and a stress component; the embedded groove and the embedded seat are integrally formed, and the stress component is installed on the embedded groove; The stress assembly includes a limiting cylinder, a conical block, and an anchor rod arranged on the embedded groove; the conical block is located in the limiting cylinder, and the puncturing end of the conical block faces the tunnel wall; the conical block is fixedly connected to the anchor rod, so that the anchor rod pushes the conical block to move toward the tunnel wall in the limiting cylinder.

2. The rockburst pre-embedded device for underground mine tunnel engineering according to claim 1, characterized in that: The embedded seat is disc-shaped.

3. The rockburst pre-embedded device for underground mine tunnel engineering according to claim 2, characterized in that: The embedded groove includes a first embedded groove and a second embedded groove; the first embedded groove is arranged in the middle of the embedded seat; the second embedded groove is strip-shaped, and a plurality of the second embedded grooves are distributed in an annular manner on the embedded seat.

4. The rockburst pre-embedded device for underground mine tunnel engineering according to claim 2, characterized in that: The embedded seat is provided with a plurality of bolts, and the bolts are used to fix the embedded seat to the tunnel wall.

5. The rockburst pre-embedded device for underground mine tunnel engineering according to claim 1, characterized in that: The anchor rod is connected to the existing hydraulic component so that the anchor rod pushes the conical block.

6. The rockburst pre-embedded device for underground mine tunnel engineering according to claim 1, characterized in that: The tapered block is in a cone shape.

7. The rockburst pre-embedded device for underground mine tunnel engineering according to claim 3, characterized in that: The length of the second embedded groove is greater than the diameter of the limiting cylinder, and the limiting cylinder is located in the middle of the second embedded groove, so that the second embedded groove reserves slag discharge ports on both sides of the limiting cylinder.

8. The rockburst pre-embedded device for underground mine tunnel engineering according to claim 7, characterized in that: The end of the limiting cylinder is provided with a plurality of slag discharge grooves distributed in an annular manner; the slag discharge grooves are communicated with the slag discharge port.

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