CN214660248U - Colliery is no coal pillar bearing structure in pit - Google Patents
Colliery is no coal pillar bearing structure in pit Download PDFInfo
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- CN214660248U CN214660248U CN202120487395.8U CN202120487395U CN214660248U CN 214660248 U CN214660248 U CN 214660248U CN 202120487395 U CN202120487395 U CN 202120487395U CN 214660248 U CN214660248 U CN 214660248U
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Abstract
The utility model provides a colliery is no coal pillar bearing structure in pit belongs to the coal mining technology field, and it specifically includes collecting space area and stope district, and collecting space area sets up in one side or both sides of stope district, and a colliery is no coal pillar bearing structure in pit still includes support piece, and support piece has a plurality ofly, and a plurality of support piece set up in the below of stope district side by side; the support piece comprises a column top support piece, a column base support piece, a steel pipe and a column base seat, the column top support piece and the column base support piece are respectively arranged at the top end and the bottom end of the steel pipe, the steel pipe is fixedly connected with the column base seat through the column base support piece, and a concrete filling layer is arranged in the steel pipe. Utility model supports the recovery area through support piece, prevents that the recovery area from collapsing.
Description
Technical Field
The utility model belongs to the technical field of the coal mining, a colliery bearing structure among the coal mining process is related to, specifically is a colliery does not have coal pillar bearing structure in the pit.
Background
The non-pillar mining technology is a mining technology for maintaining a roadway in other modes without reserving a protective roadway pillar near a hollow retained roadway in the coal mining process, and has the advantages of high coal recovery rate, capability of reducing rock burst, low tunneling rate and low roadway maintenance cost. And in the process of stoping, the gob-side entry retaining supports the roadway stepped back by using methods such as reinforced concrete supports, filling belts, dense pillars and battens along the edge of the gob-side entry retaining, so that the influence on stoping of coal after collapse near the gob-side entry retaining is prevented.
The most common non-coal-pillar mining technology is that a filling wall body is formed by using a support mold and grouting filling near a gob-side entry retaining, although the technology can achieve the purpose of isolating a stepping-on area, the technology has the problems of large workload and high labor cost, and the problem of collapse of a stoping area still exists due to the fact that the filling wall is not timely replaced. Therefore, it is necessary for those skilled in the art to develop an effective supporting structure in time.
SUMMERY OF THE UTILITY MODEL
To the problem that above-mentioned current no coal pillar exploitation technique can lead to the stope district to sink, the utility model provides a colliery is no coal pillar bearing structure in pit. The specific technical scheme is as follows:
the underground coal mine pillar-free supporting structure comprises a goaf and a stoping area, wherein the goaf is arranged on one side or two sides of the stoping area;
the support piece comprises a column top support piece, a column base support piece, a steel pipe and a column base seat, wherein the column top support piece and the column base support piece are respectively arranged at the top end and the bottom end of the steel pipe, the steel pipe is fixedly connected with the column base seat through the column base support piece, and a concrete filling layer is arranged in the steel pipe.
Further defined, the column top support comprises a column top steel plate fixedly connected to the top end of the steel tube.
Further defined, the column top support further comprises a column top stiffener disposed between the steel tube and the column top steel plate.
Further define, the post top support piece still includes sealed steel sheet, sealed steel sheet sets up the junction at steel pipe and post top steel sheet.
Further defined, the column base support member comprises a column base steel plate, and the column base steel plate is connected to the bottom end of the steel pipe.
Further defined, the column base support member further comprises a column base reinforcing rib, and the column base reinforcing rib is arranged between the steel pipe and the column base steel plate.
Further, the column top reinforcing rib and the column base reinforcing rib are multiple, and the column top reinforcing rib and the column base reinforcing rib are evenly distributed along the circumferential direction of the steel pipe.
Further limited, the outer wall of the steel pipe is coated with a rust preventive layer.
Further limited, the underground coal mine pillar-free supporting structure further comprises a sealing element, and the sealing element is arranged at the joint of the goaf and the stoping area.
Further inject, the sealing member includes square dustproof cloth and connecting rod, the top and the bottom in recovery district all are provided with the connecting rod, dustproof cloth is connected with the connecting rod.
Compared with the prior art, the beneficial effects of the utility model reside in that:
1. the utility model relates to a colliery is coal pillar-free bearing structure in pit, it is provided with a plurality of support piece in the collecting space area, and support piece includes capital support piece, column base support piece, steel pipe and column base, and capital support piece set up respectively on the top and the bottom of steel pipe, and the steel pipe passes through capital support piece and column base fixed connection, is provided with the concrete filling layer in the steel pipe. The utility model supports the recovery area through the supporting piece, and prevents the recovery area from collapsing; and the concrete filling layer poured in the steel pipe is prefabricated in advance, so that the installation process is convenient.
2. The column top reinforcing rib is arranged between the steel pipe and the column top steel plate, the connection strength between the steel pipe and the column top steel plate can be guaranteed through the column top reinforcing rib, the column base reinforcing rib is arranged between the steel pipe and the column base steel plate, and the connection strength between the steel pipe and the column base steel plate can be guaranteed through the column base reinforcing rib.
3. The outer wall of the steel pipe is coated with the anti-rust layer, and the steel pipe can be effectively prevented from being rusted by the anti-rust layer.
4. The utility model relates to a colliery is no coal pillar bearing structure in pit, it includes the sealing member, keeps apart stoping area and collecting space area through the sealing member, can prevent through the sealing member that the cross wind between stoping area and the collecting space area influences the exploitation of coal.
Drawings
FIG. 1 is a schematic structural view of a coal mine underground pillar-free support structure of the present invention;
FIG. 2 is a schematic structural view of a pedestal base;
the steel column comprises 1-a column top steel plate, 2-a column top reinforcing rib, 3-a steel pipe, 4-a concrete filling layer, 5-a column base reinforcing rib, 6-a column base steel plate and 7-a column base.
Detailed Description
The technical solution of the present invention is further explained below with reference to the drawings and examples, but the present invention is not limited to the embodiments explained below.
The underground coal mine pillar-free support structure comprises a goaf and a stoping area, wherein the goaf is arranged on one side or two sides of the stoping area; the support piece includes capital support piece, column base support piece, steel pipe 3 and column base 7, and capital support piece and column base support piece set up respectively in the top and the bottom of steel pipe 3, and steel pipe 3 passes through capital support piece and column base 7 fixed connection, is provided with concrete filling layer 4 in the steel pipe 3. The post top support piece comprises a post top steel plate 1, and the post top steel plate 1 is fixedly connected to the top end of the steel pipe 3. The column top support further comprises a column top reinforcing rib 2, and the column top reinforcing rib 2 is arranged between the steel pipe 3 and the column top steel plate 1. The column top support piece further comprises a sealing steel plate, and the sealing steel plate is arranged at the joint of the steel pipe 3 and the column top steel plate 1. The column base supporting piece comprises a column base steel plate 6, and the column base steel plate 6 is connected to the bottom end of the steel pipe 3. The column base support further comprises a column base reinforcing rib 5, and the column base reinforcing rib 5 is arranged between the steel pipe 3 and the column base steel plate 6. The column top reinforcing ribs 2 and the column base reinforcing ribs 5 are multiple, and the column top reinforcing ribs 2 and the column base reinforcing ribs 5 are evenly distributed along the circumferential direction of the steel pipe 3. The outer wall of the steel pipe 3 is coated with a rust preventive layer. The coal-pillar-free support structure for the underground coal mine further comprises a sealing element, and the sealing element is arranged at the joint of the goaf and the stoping area. The sealing member includes square dustproof cloth and connecting rod, and the top and the bottom in recovery district all are provided with the connecting rod, and dustproof cloth is connected with the connecting rod.
Example 1
Referring to fig. 1-2, the coal mine underground pillar-free supporting structure of the embodiment includes a goaf, a stoping area and 20 supporting members, wherein the stoping area is arranged at two sides of the goaf, the 20 supporting members are all arranged below the stoping area, and the 20 supporting members are arranged below the stoping area in a rectangular array;
the supporting piece comprises a column top supporting piece, a column base supporting piece, a steel pipe 3 and a column base 7, the column top supporting piece comprises a column top steel plate 1, a column top reinforcing rib 2 and a sealing steel plate, and the column base supporting piece comprises a column base steel plate 6 and a column base reinforcing rib 5; the column top steel plate 1 is fixedly arranged at the top end of the steel pipe 3, a sealing steel plate is arranged at the joint of the column top steel plate 1 and the steel pipe 3, a gap between the column top steel plate 1 and the steel pipe 3 is sealed through the sealing steel plate, 4 column top reinforcing ribs 2 are arranged, the 4 column top reinforcing ribs 2 are fixedly connected between the steel pipe 3 and the column top reinforcing ribs 2, the 4 column top reinforcing ribs 2 are uniformly distributed along the circumferential direction of the steel pipe 3, and the column top reinforcing ribs 2, the steel pipe 3, the column top steel plate 1 and the sealing steel plate are all connected in a welding mode; the column base steel plate 6 is fixedly arranged at the bottom end of the steel tube 3, 4 column base reinforcing ribs 5 are arranged, the 4 column base reinforcing ribs 5 are fixedly connected between the steel tube 3 and the column base steel plate 6, the 4 column base reinforcing ribs 5 are uniformly distributed along the circumferential direction of the steel tube 3, and the column base reinforcing ribs 5, the steel tube 3 and the column base steel plate 6 are connected in a welding mode; the bottom of the steel pipe 3 is connected with a column base 7 through a column base steel plate 6, the column base 7 is a concrete base, and a concrete filling layer 4 is poured inside the steel pipe 3; the outer wall of the steel pipe 3 is coated with an anti-rust layer, and the anti-rust layer is a paint layer which is coated.
This embodiment is a colliery does not have coal pillar bearing structure in pit, and its installation is: the support member is prefabricated firstly, and the preparation process of the support member comprises the following steps: welding a column base steel plate 6 at the bottom end of a steel pipe 3, pouring a concrete filling layer 4 into the steel pipe 3, welding a column top steel plate 1 at the top end of the steel pipe 3, welding a column base reinforcing rib 5 between the column base steel plate 6 and the steel pipe 3, and welding a column top reinforcing rib 2 between the column top steel plate 1 and the steel pipe 3; excavating a foundation pit of the column base 7, transporting the whole supporting piece to an installation site, placing the steel pipe 3, the column base steel plate 6 and the column base reinforcing ribs 5 into the foundation pit of the column base 7, and pouring concrete into the foundation pit to form the column base 7; and then welding a sealing steel plate on the outer side of the joint of the steel pipe 3 and the column top steel plate 1.
Example 2
The supporting structure comprises a goaf, stoping areas, 30 supporting pieces and sealing pieces, wherein the stoping areas are arranged on two sides of the goaf, the number of the supporting pieces is 30, the 30 supporting pieces are all arranged below the stoping areas, and the 30 supporting pieces are arranged below the stoping areas in a rectangular array;
the supporting piece comprises a column top supporting piece, a column base supporting piece, a steel pipe 3 and a column base 7, the column top supporting piece comprises a column top steel plate 1, a column top reinforcing rib 2 and a sealing steel plate, and the column base supporting piece comprises a column base steel plate 6 and a column base reinforcing rib 5; the column top steel plate 1 is fixedly arranged at the top end of the steel pipe 3, a sealing steel plate is arranged at the joint of the column top steel plate 1 and the steel pipe 3, a gap between the column top steel plate 1 and the steel pipe 3 is sealed through the sealing steel plate, 3 column top reinforcing ribs 2 are provided, the 3 column top reinforcing ribs 2 are fixedly connected between the steel pipe 3 and the column top reinforcing ribs 2, the 3 column top reinforcing ribs 2 are uniformly distributed along the circumferential direction of the steel pipe 3, and the column top reinforcing ribs 2, the steel pipe 3, the column top steel plate 1 and the sealing steel plate are detachably connected in a bolt and nut mode; the column base steel plate 6 is fixedly arranged at the bottom end of the steel tube 3, 3 column base reinforcing ribs 5 are arranged, the 3 column base reinforcing ribs 5 are fixedly connected between the steel tube 3 and the column base steel plate 6, the 3 column base reinforcing ribs 5 are uniformly distributed along the circumferential direction of the steel tube 3, and the column base reinforcing ribs 5, the steel tube 3 and the column base steel plate 6 are detachably connected in a bolt and nut mode; the bottom of the steel pipe 3 is connected with a column base 7 through a column base steel plate 6, the column base 7 is a concrete base, and a concrete filling layer 4 is poured inside the steel pipe 3; coating an anti-rust layer on the outer wall of the steel pipe 3, wherein the anti-rust layer is a resin layer coated with paint; the sealing member sets up the junction in collecting space area and stoping district, and the sealing member includes connecting rod and dustproof cloth, and the connecting rod has 2, and 2 connecting rods set up respectively in the top and the bottom in stoping district, and dustproof cloth sets up between 2 connecting rods.
This embodiment is a colliery does not have coal pillar bearing structure in pit, and its installation is: the support member is prefabricated firstly, and the preparation process of the support member comprises the following steps: connecting a column base steel plate 6 to the bottom end of a steel pipe 3 through bolts and nuts, pouring a concrete filling layer 4 into the steel pipe 3, connecting a column top steel plate 1 to the top end of the steel pipe 3 through the bolts and the nuts, connecting a column base reinforcing rib 5 between the column base steel plate 6 and the steel pipe 3 through the bolts and the nuts, and connecting a column top reinforcing rib 2 between the column top steel plate 1 and the steel pipe 3 through the bolts and the nuts; excavating a foundation pit of the column base 7, transporting the whole supporting piece to an installation site, placing the steel pipe 3, the column base steel plate 6 and the column base reinforcing ribs 5 into the foundation pit of the column base 7, and pouring concrete into the foundation pit to form the column base 7; then, a sealing steel plate is connected to the outer side of the joint of the steel pipe 3 and the column top steel plate 1 through bolts and nuts; and arranging the dustproof cloth at the joint of the goaf and the stoping area through two connecting rods.
Claims (10)
1. The underground coal mine pillar-free supporting structure comprises a goaf and a stoping area, wherein the goaf is arranged on one side or two sides of the stoping area;
the support piece comprises a column top support piece, a column base support piece, a steel pipe (3) and a column base seat (7), wherein the column top support piece and the column base support piece are respectively arranged at the top end and the bottom end of the steel pipe (3), the steel pipe (3) is fixedly connected with the column base seat (7) through the column base support piece, and a concrete filling layer (4) is arranged in the steel pipe (3).
2. The coal mine underground pillar-free support structure according to claim 1, wherein the pillar top support comprises a pillar top steel plate (1), and the pillar top steel plate (1) is fixedly connected to the top end of the steel pipe (3).
3. The coal mine underground pillar-free support structure according to claim 2, wherein the pillar top support further comprises a pillar top reinforcing rib (2), and the pillar top reinforcing rib (2) is arranged between the steel pipe (3) and the pillar top steel plate (1).
4. The support structure for the coal-pillar-free underground of the coal mine according to claim 3, wherein the pillar top support further comprises a sealing steel plate, and the sealing steel plate is arranged at the joint of the steel pipe (3) and the pillar top steel plate (1).
5. The support structure for the coal-pillar-free underground of the coal mine according to claim 4, wherein the column base support member comprises a column base steel plate (6), and the column base steel plate (6) is connected to the bottom end of the steel pipe (3).
6. The coal mine underground pillar-free support structure according to claim 5, wherein the pillar brace further comprises a pillar base reinforcing rib (5), and the pillar base reinforcing rib (5) is arranged between the steel pipe (3) and the pillar base steel plate (6).
7. The underground coal mine pillar-free support structure according to claim 6, wherein the number of the pillar top reinforcing ribs (2) and the pillar base reinforcing ribs (5) is multiple, and the plurality of the pillar top reinforcing ribs (2) and the plurality of the pillar base reinforcing ribs (5) are uniformly distributed along the circumferential direction of the steel pipe (3).
8. The coal mine underground pillar-free support structure according to claim 7, wherein the outer wall of the steel pipe (3) is coated with a rust preventive layer.
9. The coal mine underground coal pillar-free support structure of claim 8, further comprising a sealing member disposed at a junction of the goaf and the stoping zone.
10. The coal mine underground coal pillar-free support structure according to claim 9, wherein the sealing member comprises square dust cloth and a connecting rod, the connecting rod is arranged at the top and the bottom of the recovery area, and the dust cloth is connected with the connecting rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120487395.8U CN214660248U (en) | 2021-03-05 | 2021-03-05 | Colliery is no coal pillar bearing structure in pit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120487395.8U CN214660248U (en) | 2021-03-05 | 2021-03-05 | Colliery is no coal pillar bearing structure in pit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214660248U true CN214660248U (en) | 2021-11-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120487395.8U Active CN214660248U (en) | 2021-03-05 | 2021-03-05 | Colliery is no coal pillar bearing structure in pit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214660248U (en) |
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2021
- 2021-03-05 CN CN202120487395.8U patent/CN214660248U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 710065 No. 37, Keji Sixth Road, Yanta District, Xi'an City, Shaanxi Province Patentee after: Shaanxi transportation planning and Design Institute Co.,Ltd. Address before: 710065 No. 37, Keji Sixth Road, Yanta District, Xi'an City, Shaanxi Province Patentee before: Shaanxi Traffic Planning Design Research Institute |
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| CP01 | Change in the name or title of a patent holder |