Coal mine rock burst prevention and control supporting structure

Abstract

The utility model discloses a coal mine rock burst prevention supporting structure which comprises two supporting rods and a top plate, the top plate is mounted at the upper ends of the two supporting rods, an anchoring mechanism is mounted on the side wall of each supporting rod and comprises an anchor hole, a sliding groove, an anchor rod, a jacking plate and a locking nut, and the anchor hole and the sliding groove are formed in the side wall of each supporting rod. The sliding grooves are formed in the upper ends of the anchor holes, anchor rods are inserted into the anchor holes and the sliding grooves, the anchor rods can be inserted into the side wall of an external coal mine tunnel, the outer side walls of the anchor rods are sleeved with jacking plates, the jacking plates can be attached to the side walls of the supporting rods, and locking nuts are rotationally installed on the outer sides of the anchor rods through threads. According to the device, the anchor rods are arranged on the supporting rods, so that the anchor rods are inserted into the external coal mine underground tunnel, on one hand, a coal rock mass is anchored, on the other hand, the supporting rods can be fixed, the stability of the supporting rods is improved, and it is guaranteed that the device can effectively support the coal mine underground tunnel.

Description

TECHNICAL FIELD

[0001] The patent relates to the technical field of rock burst prevention, in particular to a coal mine rock burst prevention supporting structure. BACKGROUND

[0002] Rock burst generally refers to rock burst, which is a sudden and violent burst of strain energy in a free rock mass in a deep or high tectonic stress area, resulting in brittle fracture of the rock mass like an explosion.

[0003] In the coal mine rock burst prevention supporting structure disclosed in the patent with the publication number CN221779450U, two support frames and a top plate are provided, and after they are spliced together, they serve to support the mine tunnel.

[0004] However, in the above-mentioned document, no connecting structure is provided between the two support frames, the top plate and the external mine tunnel, resulting in poor fixing effect of the device. Meanwhile, the support frames are installed on the mounting plates, and if rock burst occurs, the support frames are prone to bending due to impact force, causing the device to tip over and fail to effectively support. CONTENT OF THE UTILITY MODEL

[0005] The purpose of the patent is to provide a coal mine rock burst prevention supporting structure to solve the problems raised in the background.

[0006] To achieve the above-mentioned purpose, the patent provides the following technical solution: a coal mine rock burst prevention supporting structure, comprising a support rod and a top plate, the support rod is provided with two, the top plate is installed at the upper end of the two support rods, and the side wall of the support rod is provided with an anchoring mechanism.

[0007] The anchoring mechanism comprises an anchor hole, a sliding groove, an anchor rod, a top holding plate and a locking nut, the side wall of the support rod is provided with an anchor hole and a sliding groove, the sliding groove is arranged at the upper end of the anchor hole, the anchor rod is inserted and installed in the anchor hole and the sliding groove, the anchor rod can be inserted into the side wall of the external coal mine tunnel, the outer side wall of the anchor rod is sleeved with the top holding plate, the top holding plate can be attached to the side wall of the support rod, and the outer side of the anchor rod is rotatably installed with the locking nut through threads, and the locking nut can be attached to the side wall of the top holding plate.

[0008] Preferably, the inner side wall of the sliding groove is provided with a connecting groove, a positioning ring is slidingly installed in the sliding groove, a strip-shaped block is installed on the side wall of the positioning ring, the strip-shaped block is inserted and installed in the connecting groove, and the anchor rod can be inserted and installed in the positioning ring.

[0009] Preferably, the positioning ring comprises a main ring body, a secondary ring body, a limiting ring and a plug, the main ring body is slidingly installed in a sliding groove, the inner side of the main ring body slidingly installs the secondary ring body, one end of the secondary ring body is installed with the limiting ring, the other end of the secondary ring body is installed with the plug, and the plug can be inserted into the side wall of the external coal mine tunnel.

[0010] Preferably, the left and right sides of the lower wall of the top plate are both installed with reinforcing blocks, the cross section of the reinforcing block is triangular, and the reinforcing block is welded to the side wall of the support rod.

[0011] Preferably, the lower wall of the support rod is welded with a bottom plate, the upper wall of the bottom plate is welded with a reinforcing rib, the side wall of the reinforcing rib is welded with the side wall of the support rod, and the positioning nails are inserted and installed at the four corners of the upper wall of the bottom plate, and the positioning nails can be inserted into the lower wall of the external coal mine tunnel.

[0012] Preferably, the upper wall of the top plate is provided with a giving slot, the top holding steel plate is inserted and installed in the giving slot, and the top holding steel plate is attached to the upper wall of the external coal mine tunnel.

[0013] Compared with the prior art, the patent has the beneficial effects that:

[0014] The device sets anchor rods on the support rod, inserts the anchor rods into the external coal mine tunnel, anchors the coal rock mass on one hand, and fixes the support rod on the other hand, improves the stability of the support rod, ensures that the device can effectively support the coal mine tunnel, and sets a sliding groove on the support rod, adjusts the position of the anchor rod according to the rock-soil conditions, engineering standards and design requirements, and improves the applicability of the device. BRIEF DESCRIPTION OF DRAWINGS

[0015] Fig. 1 It is a structural schematic diagram of the patent.

[0016] Fig. 2 It is a sectional structural schematic diagram of the patent.

[0017] Fig. 3 It is a positioning ring structural schematic diagram of the patent.

[0018] In the figure: 1 support rod, 2 top plate, 3 anchoring mechanism, 31 anchor hole, 32 sliding groove, 33 anchor rod, 34 top holding plate, 35 locking nut, 4 connecting groove, 5 positioning ring, 6 strip block, 7 reinforcing block, 8 bottom plate, 9 reinforcing rib, 10 positioning nail, 11 giving slot, 12 top holding steel plate, 51 main ring body, 52 secondary ring body, 53 limiting ring, 54 plug. DETAILED DESCRIPTION

[0019] With reference to the drawings of the embodiments of the present patent, the technical solutions in the embodiments of the present patent will be described clearly and completely. Obviously, the described embodiments are only part of the embodiments of the present patent, rather than all the embodiments. Based on the embodiments of the present patent, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of the present patent.

[0020] Please refer to Figs. 1-3 The present patent provides a technical solution: a coal mine rock burst prevention and control supporting structure, comprising support rods 1 and a top plate 2, two support rods 1 are provided, the top plate 2 is installed at the upper end of the two support rods 1, and an anchoring mechanism 3 is installed on the side wall of the support rod 1;

[0021] By providing the anchoring mechanism 3 on the support rod 1, on the one hand, the coal rock mass is anchored, and on the other hand, the support rod 1 can be fixed, improving the stability of the support rod 1 and ensuring that the device can effectively support the coal mine tunnel;

[0022] The anchoring mechanism 3 comprises an anchor hole 31, a sliding groove 32, an anchor rod 33, a top holding plate 34 and a locking nut 35, the side wall of the support rod 1 is provided with the anchor hole 31 and the sliding groove 32, the sliding groove 32 is arranged at the upper end of the anchor hole 31, the anchor rod 33 is inserted and installed in the anchor hole 31 and the sliding groove 32, the anchor rod 33 can be inserted into the side wall of the external coal mine tunnel, the top holding plate 34 is sleeved on the outside wall of the anchor rod 33, the top holding plate 34 can be attached to the side wall of the support rod 1, and the locking nut 35 is threadedly rotatably installed on the outside of the anchor rod 33, and the locking nut 35 can be attached to the side wall of the top holding plate 34;

[0023] In this paper, two anchor rods 33 are arranged on each support rod 1, one of which is inserted into the anchor hole 31 and the other is inserted into the sliding groove 32, so that the position of the anchor rod 33 inserted into the sliding groove 32 can be adjusted, so that the spacing of the two anchor rods 33 meets the engineering standards and design requirements, improving the applicability of the device. After determining the position of the anchor rod 33, the anchor rod 33 is inserted into the side wall of the external coal mine tunnel to fix the support rod 1, and then the top holding plate 34 is sleeved on the end of the anchor rod 33, and then the locking nut 35 is locked to fix the top holding plate 34 and the anchor rod 33.

[0024] Specifically, a connecting groove 4 is formed in the inner side wall of the sliding groove 32, a positioning ring 5 is slidingly installed in the sliding groove 32, a strip-shaped block 6 is installed on the side wall of the positioning ring 5, the strip-shaped block 6 is inserted and installed in the connecting groove 4, and the anchor rod 33 can be inserted and installed in the positioning ring 5;

[0025] By setting the positioning ring 5 in the sliding groove 32, the anchor rod 33 inserted into the sliding groove 32 can be limited, so that the anchor rod 33 does not deviate during insertion, affecting the stability of the anchor rod 33;

[0026] By cooperating the strip 6 with the connecting groove 4, the rotation and inclination of the positioning ring 5 can be avoided.

[0027] Specifically, the positioning ring 5 includes a main ring body 51, a secondary ring body 52, a limiting ring 53 and a plug 54, the main ring body 51 is slidingly installed in the sliding groove 32, the inner side of the main ring body 51 slidingly installs the secondary ring body 52, one end of the secondary ring body 52 is installed with the limiting ring 53, the other end of the secondary ring body 52 is installed with the plug 54, the plug 54 can be inserted into the side wall of the external coal mine tunnel;

[0028] After adjusting the position of the positioning ring 5, the limiting ring 53 on the outer side of the secondary ring body 52 can be knocked to insert the plug 54 at the other end of the secondary ring body 52 into the inner wall of the external coal mine tunnel, so as to fix the position of the positioning ring 5 and prevent the positioning ring 5 from slipping.

[0029] Specifically, the left and right sides of the lower wall of the roof 2 are both installed with the reinforcing block 7, the cross section of the reinforcing block 7 is triangular, and the reinforcing block 7 is welded to the side wall of the support rod 1.

[0030] The setting of the reinforcing block 7 can improve the stability of the connection between the roof 2 and the support rod 1.

[0031] Specifically, the lower wall of the support rod 1 is welded with the bottom plate 8, the upper wall of the bottom plate 8 is welded with the reinforcing rib 9, the side wall of the reinforcing rib 9 is welded with the side wall of the support rod 1, and the positioning nail 10 is inserted and installed at the four corners of the upper wall of the bottom plate 8, and the positioning nail 10 can be inserted into the lower wall of the external coal mine tunnel.

[0032] Specifically, the upper wall of the roof 2 is provided with the accommodation groove 11, the accommodation groove 11 is inserted and installed with the top-holding steel plate 12, and the top-holding steel plate 12 is attached to the upper wall of the external coal mine tunnel.

[0033] The top-holding steel plate 12 can connect the roofs 2 in multiple devices to form a whole, thereby further improving the supporting performance of the device.

[0034] Working principle: after the device is erected in the coal mine tunnel, first insert one anchor rod 33 into the external coal mine tunnel through the anchor hole 31, then insert another anchor rod into the positioning ring 5 in the sliding groove 32, and adjust the position of the positioning ring 5 according to the engineering standard and design requirement, when the position is determined, knock the limiting ring 53 at the end of the auxiliary ring body 52 to make the plug 54 inserted into the outer wall of the coal mine tunnel, fix the position of the positioning ring 5, prevent the positioning ring 5 from slipping, then insert the other anchor rod 33 into the side wall of the external coal mine tunnel to fix the support rod 1, then sleeve the top holding plate 34 at the end of the anchor rod 33, then fix the top holding plate 34 and the anchor rod 33 by locking the locking nut 35.

[0035] After the support rod 1 is fixed, the top holding steel plate 12 can be placed in the gap groove 11 on the top plate 2, and the top plates 2 in the plurality of devices are connected to form a whole, thereby further improving the supporting performance of the device.

[0036] It is obvious to those skilled in the art that the present patent is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or essential characteristics of the present patent. Therefore, the embodiments should be regarded as exemplary and non-limiting, and the scope of the present patent is defined by the appended claims rather than the above description, and it is intended to include all changes falling within the meaning and scope of the equivalent elements of the claims. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0037] In addition, it should be understood that although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be combined appropriately to form other embodiments that those skilled in the art can understand.

Claims

1. A rock burst prevention and support structure for coal mines, comprising a support rod (1) and a roof (2), characterized in that: Two support rods (1) are arranged, the top plate (2) is installed at the upper end of the two support rods (1), and an anchoring mechanism (3) is installed on the side wall of the support rod (1); The anchoring mechanism (3) comprises an anchor hole (31), a sliding groove (32), an anchor rod (33), a top holding plate (34) and a locking nut (35), the side wall of the support rod (1) is provided with the anchor hole (31) and the sliding groove (32), the sliding groove (32) is arranged at the upper end of the anchor hole (31), the anchor rod (33) is inserted and installed in the anchor hole (31) and the sliding groove (32), the anchor rod (33) can be inserted into the side wall of the external coal mine tunnel, the outer side wall of the anchor rod (33) is sleeved with the top holding plate (34), the top holding plate (34) can be attached to the side wall of the support rod (1), and the outer side of the anchor rod (33) is rotatably installed with the locking nut (35) through threads, and the locking nut (35) can be attached to the side wall of the top holding plate (34).

2. The rock burst prevention and support structure for coal mines according to claim 1, characterized in that: The inner side wall of the sliding groove (32) is provided with a connecting groove (4), the sliding groove (32) is slidably installed with a positioning ring (5), the side wall of the positioning ring (5) is installed with a strip-shaped block (6), the strip-shaped block (6) is inserted and installed in the connecting groove (4), and the anchor rod (33) can be inserted and installed in the positioning ring (5).

3. The rock burst prevention and support structure for coal mines according to claim 2, characterized in that: The positioning ring (5) comprises a main ring body (51), a secondary ring body (52), a limiting ring (53) and a plug (54), the main ring body (51) is slidably installed in the sliding groove (32), the inner side of the main ring body (51) is slidably installed with the secondary ring body (52), one end of the secondary ring body (52) is installed with the limiting ring (53), the other end of the secondary ring body (52) is installed with the plug (54), and the plug (54) can be inserted into the side wall of the external coal mine tunnel.

4. The rock burst prevention and support structure for coal mines according to claim 1, characterized in that: The left and right sides of the lower wall of the top plate (2) are both installed with a reinforcing block (7), the cross section of the reinforcing block (7) is triangular, and the reinforcing block (7) is welded to the side wall of the support rod (1).

5. The rock burst prevention support structure for coal mines according to claim 1, characterized in that: The lower wall of the support rod (1) is welded with a bottom plate (8), the upper wall of the bottom plate (8) is welded with a reinforcing rib (9), the side wall of the reinforcing rib (9) is welded with the side wall of the support rod (1), the positioning nails (10) are inserted and installed at the four corners of the upper wall of the bottom plate (8), and the positioning nails (10) can be inserted into the lower wall of the external coal mine tunnel.

6. The rock burst prevention support structure for coal mines according to claim 1, characterized in that: The upper wall of the top plate (2) is provided with a giving slot (11), the giving slot (11) is inserted and installed with a top holding steel plate (12), and the top holding steel plate (12) is attached to the upper wall of the external coal mine tunnel.

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