CN210164482U - Protective device for safe construction of rock burst geological tunnel section - Google Patents
Protective device for safe construction of rock burst geological tunnel section Download PDFInfo
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- CN210164482U CN210164482U CN201920892405.9U CN201920892405U CN210164482U CN 210164482 U CN210164482 U CN 210164482U CN 201920892405 U CN201920892405 U CN 201920892405U CN 210164482 U CN210164482 U CN 210164482U
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Abstract
The utility model discloses a protective device for the safety construction of a rock burst geological tunnel section, which comprises a lining wall positioned in the rock burst geological tunnel; the lining wall is in an inverted U-shaped structure with an upper arch and a lower straight; two sections of vertical sections at the lower part of the lining wall protrude towards the direction of the rock wall of the rock burst geological cavern to form a boss, and the boss is provided with a mounting hole; a supporting rod is inserted into the mounting hole; the outer wall of the supporting rod is connected with a group of mounting cylinders, springs are arranged in the mounting cylinders, and the tops of the springs are flexibly connected with the bottoms of the top blocks; the top of the top block is clamped with a butt joint hole at the bottom of the support drill rod; the top of the support drill rod is in sliding connection with a pressure relief hole formed in the rock wall of the rock burst geological cavern. The utility model discloses a kicking block that the spring carries out concertina movement in the installation section of thick bamboo supports strutting the borer to provide certain pressure reducing performance, avoided strutting the borer when the cliff appears warping and cause the secondary to destroy to the cliff, improved the stability of strutting the borer and strutting to the cliff.
Description
Technical Field
The utility model relates to a protector of rockburst geology tunnel section safety construction belongs to rockburst geology construction technical field.
Background
Rockburst geology refers to a geological stratum with a burst-type damage phenomenon in an adjacent hollow rock mass in a deep part or a region with high structural stress of underground mining, so that a protective device is usually required to support a tunnel wall when the rockburst geology is subjected to excavation construction.
Most of the existing protection devices are rigid supports and cannot adapt to slight deformation of a rock wall, so that the rock wall in a rigid support state is prone to rock burst, the support stability is reduced, and the personal safety of workers in normal construction is affected.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a protector of rockburst geology tunnel section safety construction to solve the slight deformation of the unable adaptation cliff of rigid support device among the prior art, and lead to the cliff under the rigid support state to appear the rockburst phenomenon more easily, reduce the stability of strutting, influence the workman and carry out the personal safety scheduling problem of normal construction, thereby overcome the not enough of prior art.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model relates to a protective device for the safe construction of a rock burst geological tunnel section, which comprises a lining wall positioned in a rock burst geological tunnel; the lining wall is in an inverted U-shaped structure with an upper arch and a lower straight; two sections of vertical sections at the lower part of the lining wall protrude towards the direction of the rock wall of the rock burst geological cavern to form a boss, and the boss is provided with a mounting hole; a supporting rod is inserted into the mounting hole; the outer wall of the supporting rod is connected with a group of mounting cylinders, springs are arranged in the mounting cylinders, and the tops of the springs are flexibly connected with the bottoms of the top blocks; the top of the top block is clamped with a butt joint hole at the bottom of the support drill rod; the top of the support drill rod is in sliding connection with a pressure relief hole formed in the rock wall of the rock burst geological cavern.
In the protective device for the safe construction of the rock burst geological cavern section, a layer of smearing is arranged on the rock wall of the rock burst geological cavern.
In the protective device for the safe construction of the rock burst geological tunnel section, a layer of reinforcing steel bar protective net is arranged between the smearing layer and the supporting rod, and the reinforcing steel bar protective net is in an inverted U-shaped structure with an upper arch and a lower straight; two ends of the reinforcing steel bar protective net are connected with bosses on two sides of the lining wall.
In the protective device for the safety construction of the rock burst geological tunnel section, the pressure reducing holes are distributed at equal intervals along the inner side arch of the rock wall and are distributed at equal intervals along the length direction of the rock wall.
In the protective device for the safe construction of the rock burst geological tunnel section, the diameter of the pressure reducing hole is 40-50 mm.
In the protective device for the safe construction of the rock burst geological tunnel section, the mounting cylinder penetrates through the reinforcing steel bar protective net and is welded with the supporting rod; the positions of the mounting cylinders correspond to the positions of the pressure reducing holes, and each pressure reducing hole corresponds to one mounting cylinder.
Due to the adoption of the technical scheme, compared with the prior art, the utility model discloses a pressure-reducing hole, the energy that stores in the wall rock that is hard, fresh and complete, has few cracks or only has hidden cracks is reduced to reduce the rock burst probability, and the supporting borer in the pressure-reducing hole can support partial rock structure simultaneously, avoids taking place the rock burst collapse phenomenon on a large scale; the top block which performs telescopic motion in the installation barrel through the spring supports the supporting drill rod, so that certain pressure reduction performance is provided, secondary damage to the rock wall caused by the supporting drill rod when the rock wall deforms is avoided, and the stability of supporting the rock wall by the supporting drill rod is improved.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
fig. 2 is a partially enlarged view of a portion a in fig. 1.
The labels in the figures are: 1-rock wall, 2-pressure reducing hole, 3-supporting drill rod, 4-coating layer, 5-butt hole, 6-top block, 7-installation barrel, 8-spring, 9-reinforcing bar protective net, 10-supporting rod, 11-lining wall and 12-installation hole.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
The utility model relates to a protective device for the safe construction of a rock burst geological tunnel section; as shown in fig. 1 and 2, includes a lining wall 11 located in a rock burst geological hole; the lining wall 11 is in an inverted U-shaped structure with an upper arch and a lower straight; two vertical sections at the lower part of the lining wall 11 protrude towards the rock wall 1 of the rock burst geological cavern to form a boss, and the boss is provided with a mounting hole 12; a supporting rod 10 is inserted into the mounting hole 12; the outer wall of the supporting rod 10 is connected with a group of mounting cylinders 7, springs 8 are arranged in the mounting cylinders 7, and the tops of the springs 8 are flexibly connected with the bottoms of the top blocks 6; the top of the top block 6 is clamped with the butt joint hole 5 at the bottom of the support drill rod 3; the top of the support drill rod 3 is in sliding connection with a pressure relief hole 2 arranged on the rock wall 1 of the rock burst geological cavern. The rock wall 1 of the rock burst geological cavern is provided with a coating layer 4. A layer of reinforcing steel bar protective net 9 is arranged between the smearing layer 4 and the supporting rod 10, and the reinforcing steel bar protective net 9 is in an inverted U-shaped structure with an upper arch and a lower straight; two ends of the steel bar protective net 9 are connected with bosses on two sides of the lining wall 11. The pressure reducing holes 2 are distributed along the inner side of the rock wall 1 at equal intervals in an arched manner and are distributed at equal intervals along the length direction of the rock wall 1. The diameter of the pressure reducing hole 2 is 40-50 mm. The mounting cylinder 7 penetrates through the steel bar protective net 9 and is welded with the supporting rod 10; the positions of the mounting cylinders 7 correspond to the positions of the pressure reducing holes 2, and each pressure reducing hole 2 corresponds to one mounting cylinder 7.
Examples
This example is shown in fig. 1 and 2. Comprises a rock wall 1, a reinforcing steel bar protective net 9 and a lining wall 11. The rock wall 1 is provided with pressure reducing holes 2, support rods 3 are arranged on the inner sides of the pressure reducing holes 2, the pressure reducing holes 2 are distributed on the inner side of the rock wall 1 at equal intervals, and the diameter of each pressure reducing hole 2 is 40-50 mm, so that the energy stored in surrounding rocks is reduced, and the rock burst probability is reduced; the supporting drill rod 3 is mutually connected with the rock wall 1 through the pressure reducing hole 2, the rock wall 1 is provided with the smearing layer 4, the supporting drill rod 3 is embedded in the rock wall 1 through the pressure reducing hole 2, the supporting drill rod 3 is in clamping connection with the ejector block 6 through the butt joint hole 5, the ejector block 6 is convenient to stably support the supporting drill rod 3 through the butt joint hole 5, the butt joint hole 5 is reserved on the supporting drill rod 3, the ejector block 6 is arranged on the inner side of the butt joint hole 5, the ejector block 6 is mutually connected with the supporting drill rod 3 through the butt joint hole 5, the ejector block 6 is cut into a convex structure, the ejector block 6 and the mounting barrel 7 form a telescopic structure through a spring 8, and the flexibility of supporting the rock wall 1 is improved; the below of kicking block 6 is provided with an installation section of thick bamboo 7, and install spring 8 on the kicking block 6, equidistant distribution on a fender rod 10 of an installation section of thick bamboo 7, and be welded connection between an installation section of thick bamboo 7 and the fender rod 10, the stability of installation of an installation section of thick bamboo 7 has been improved, the stability of strutting rock wall 1 has been improved simultaneously, spring 8 is located the inboard of an installation section of thick bamboo 7, and kicking block 6 passes through spring 8 and installation section of thick bamboo 7 interconnect, the outside of kicking block 6 and an installation section of thick bamboo 7 is provided with reinforcing bar protection network 9, and installation section of thick bamboo 7 and a fender rod 10 interconnect, and a fender rod 10 is located the inboard of rock wall 1, the outside of a fender rod 10 is provided with lining wall 11, and be provided with mounting hole 12 on the lining wall 11, and lining wall 11 passes through mounting hole 12 and a fender rod 10 interconnect.
The utility model discloses a theory of operation does: firstly, a pressure reducing hole 2 with the diameter of 40-50 mm is formed in a rock wall 1, the pressure reducing hole 2 can reduce the energy stored in surrounding rocks which are hard, fresh and complete and have few or only hidden cracks, the rock burst probability is reduced, then a supporting drill rod 3 is inserted into the pressure reducing hole 2 in the rock wall 1, then plastic fiber concrete is laid on the inner side of the rock wall 1 to form a coating layer 4, the exposure time of rock strata can be reduced, the occurrence of rock burst is reduced, the personal safety is ensured, then a reinforcing steel bar protective net 9 is laid, then a supporting rod 10 is installed, a top block 6 on the supporting rod 10 penetrates through meshes on the reinforcing steel bar protective net 9 to be inserted into a butt joint hole 5 on the supporting drill rod 3, and the top block 6 extends out of an installation barrel 7 under the pushing of a reset spring 8 to jack the supporting drill rod 3, so that a certain pressure reducing performance is provided, and the secondary damage of the supporting drill rod 3 to the rock wall 1 when the rock wall 1 deforms is avoided, the stability that the supporting borer 3 was strutted to rock wall 1 is improved, lining wall 11 is built at last and is fixed to supporting rod 10, and lining wall 11 can form the permanent supporting construction that materials such as reinforced concrete were built at the hole body periphery simultaneously, can also keep apart the rockburst rubble, has improved barrier propterty, and the protector of such rockburst geology tunnel segment safety construction makes things convenient for people's use.
The utility model reduces the energy stored in the surrounding rock with hard, fresh and complete, few or only hidden cracks through the pressure reducing holes, thereby reducing the rock burst probability, and simultaneously the supporting drill rod in the pressure reducing holes can support part of rock structures, thereby avoiding the collapse phenomenon of rock burst in a large range; the top block which performs telescopic motion in the installation barrel through the spring supports the supporting drill rod, so that certain pressure reduction performance is provided, secondary damage to the rock wall caused by the supporting drill rod when the rock wall deforms is avoided, and the stability of supporting the rock wall by the supporting drill rod is improved.
Claims (6)
1. A protective device for the safe construction of a rock burst geological tunnel section comprises a lining wall (11) positioned in a rock burst geological tunnel; the method is characterized in that: the shape of the lining wall (11) is an inverted U-shaped structure with an upper arch and a lower straight; two vertical sections at the lower part of the lining wall (11) protrude towards the rock wall (1) of the rock burst geological cavern to form a boss, and a mounting hole (12) is formed in the boss; a supporting rod (10) is inserted into the mounting hole (12); the outer wall of the supporting rod (10) is connected with a group of mounting cylinders (7), springs (8) are arranged in the mounting cylinders (7), and the tops of the springs (8) are flexibly connected with the bottoms of the top blocks (6); the top of the top block (6) is clamped with a butt joint hole (5) at the bottom of the support drill rod (3); the top of the supporting drill rod (3) is in sliding connection with a pressure reducing hole (2) arranged on the rock wall (1) of the rock burst geological cavern.
2. The protection device for rock burst geological cavern section safety construction according to claim 1, characterized in that: and a coating layer (4) is arranged on the rock wall (1) of the rock burst geological cavern.
3. The protection device for rock burst geological cavern section safety construction according to claim 2, characterized in that: a layer of reinforcing steel bar protective net (9) is arranged between the smearing layer (4) and the arched supporting rods (10), and the reinforcing steel bar protective net (9) is of an inverted U-shaped structure with an upper arch and a lower straight; two ends of the steel bar protective net (9) are connected with the bosses at two sides of the lining wall (11).
4. The protection device for rock burst geological cavern section safety construction according to claim 1, characterized in that: the pressure reducing holes (2) are distributed along the inner side of the rock wall (1) in an arched and equidistant manner and are distributed along the length direction of the rock wall (1) in an equidistant manner.
5. The protection device for rock burst geological cavern section safety construction according to claim 1, characterized in that: the diameter of the pressure reducing hole (2) is 40-50 mm.
6. The protection device for rock burst geological cavern section safety construction according to claim 1, characterized in that: the mounting cylinder (7) penetrates through the steel bar protective net (9) and is welded with the supporting rod (10); the positions of the mounting cylinders (7) correspond to the positions of the pressure reducing holes (2), and each pressure reducing hole (2) corresponds to one mounting cylinder (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920892405.9U CN210164482U (en) | 2019-06-14 | 2019-06-14 | Protective device for safe construction of rock burst geological tunnel section |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920892405.9U CN210164482U (en) | 2019-06-14 | 2019-06-14 | Protective device for safe construction of rock burst geological tunnel section |
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| Publication Number | Publication Date |
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| CN210164482U true CN210164482U (en) | 2020-03-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920892405.9U Active CN210164482U (en) | 2019-06-14 | 2019-06-14 | Protective device for safe construction of rock burst geological tunnel section |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110130929A (en) * | 2019-06-14 | 2019-08-16 | 贵州省水利水电勘测设计研究院 | A kind of protective device of rock burst geology hole section safe construction |
-
2019
- 2019-06-14 CN CN201920892405.9U patent/CN210164482U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110130929A (en) * | 2019-06-14 | 2019-08-16 | 贵州省水利水电勘测设计研究院 | A kind of protective device of rock burst geology hole section safe construction |
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Address after: 550002 No.27 Baoshan South Road, Nanming District, Guiyang City, Guizhou Province Patentee after: Guizhou water conservancy and Hydropower Survey, design and Research Institute Co.,Ltd. Address before: 550002 No.27 Baoshan South Road, Nanming District, Guiyang City, Guizhou Province Patentee before: GUIZHOU SURVEY & DESIGN Research Institute FOR WATER RESOURCES AND HYDROPOWER |
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