CN112855211B - Supporting and reinforcing device and method for unstable stope in mine - Google Patents
Supporting and reinforcing device and method for unstable stope in mine Download PDFInfo
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- CN112855211B CN112855211B CN202110047454.4A CN202110047454A CN112855211B CN 112855211 B CN112855211 B CN 112855211B CN 202110047454 A CN202110047454 A CN 202110047454A CN 112855211 B CN112855211 B CN 112855211B
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- mesh
- deformed steel
- stope
- unstable
- steel bars
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- 230000008093 supporting effect Effects 0.000 title claims abstract description 38
- 230000003014 reinforcing effect Effects 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 13
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 41
- 239000010959 steel Substances 0.000 claims abstract description 41
- 239000011435 rock Substances 0.000 claims abstract description 28
- 239000002184 metal Substances 0.000 claims description 4
- 230000002787 reinforcement Effects 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 5
- 239000000463 material Substances 0.000 abstract description 4
- 238000005065 mining Methods 0.000 description 14
- 230000002633 protecting effect Effects 0.000 description 4
- 230000004075 alteration Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000008262 pumice Substances 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
- E21D11/105—Transport or application of concrete specially adapted for the lining of tunnels or galleries ; Backfilling the space between main building element and the surrounding rock, e.g. with concrete
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
- E21D11/107—Reinforcing elements therefor; Holders for the reinforcing elements
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/14—Lining predominantly with metal
- E21D11/15—Plate linings; Laggings, i.e. linings designed for holding back formation material or for transmitting the load to main supporting members
- E21D11/152—Laggings made of grids or nettings
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
- E21D21/0026—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Structural Engineering (AREA)
- Architecture (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Civil Engineering (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
Abstract
The invention relates to a mine underground unstable stope supporting and reinforcing device and a method, wherein the device comprises: a mesh comprising a first face opposite a rock wall; a plurality of tube seam anchors inserted into the rock wall from the first side of the mesh transversely through the mesh; the deformed steel bar is inserted into the ground and contacts the first surface of the mesh, and the mesh, the plurality of tube seam anchor rods and the deformed steel bar form a strut framework; and concrete poured on the pillar frame. The invention has the advantages of simple material, small construction difficulty, less time required for supporting and has better support and protection for the broken surrounding rock.
Description
Technical Field
The invention belongs to the technical field of underground mining of mines, and particularly relates to a supporting and reinforcing device and method for an underground unstable mining field of a mine.
Background
When the mine adopts a roadway stope for mining, as in the upward horizontal layering or access filling mining method, adverse conditions such as development and breakage of ore body joints, unstable ore body surrounding rocks and the like are common. The roof and the upper plate fall off occasionally in the stoping process, so that the dilution rate and the loss rate of ores are increased, the economic benefit of mining is greatly influenced, the normal operation of mining operation is hindered, great potential safety hazards are brought to operating personnel, and stoping is even abandoned under the condition of high safety risk, so that the resource loss is caused.
Under the condition, the traditional technology uses a metal mesh tightly attached to the rock surface and a pipe seam anchor rod and sprays concrete to support in a combined mode to form a protection surface, the construction period is long, the cost is high, the anchoring distance is short, the supporting effect is not ideal when the ore rock is broken, secondary collapse of the supporting part often occurs, secondary combined supporting is performed after the collapse, and the recovery efficiency is obviously reduced. If the roof fall of the mining area is large, the ore body stoping of the mining area is usually abandoned, and large waste is caused to resources.
Disclosure of Invention
In order to solve the stope problem, the invention provides the device and the method for supporting and reinforcing the unstable stope underground, which are convenient to construct, safe, efficient and good in economy, and normal stope is realized.
In order to achieve the purpose, the invention provides the following technical scheme that the supporting and reinforcing device for the unstable stope in the mine underground comprises: a mesh comprising a first face opposite a rock wall; a plurality of tube seam anchors inserted into the rock wall from the first side of the mesh transversely through the mesh; the deformed steel bar is inserted into the ground and contacts the first surface of the mesh, and the mesh, the plurality of pipe seam anchor rods and the deformed steel bar form a strut framework; and concrete poured on the pillar frame.
Preferably, the deformed steel bars comprise at least two deformed steel bars which are respectively arranged on two sides of the first surface.
Preferably, the deformed steel bar and the mesh are bound on the pipe seam anchor rod, and the first surface of the mesh wraps the deformed steel bar.
Preferably, the plurality of tube seam bolts comprises two rows of tube seam bolts longitudinally arranged on both sides of the first face.
Preferably, the mesh is a metal mesh.
Preferably, each strut frame has a width of 0.8 to 2 meters, a thickness of 0.6 to 1.5 meters, and a height of 2 to 4.5 meters.
Preferably, the mesh is cylindrical and includes the first surface, a second surface facing the first surface and closely attached to the rock wall, and third and fourth surfaces facing each other and connecting the first and second surfaces.
The invention also provides the following technical scheme, and the method for supporting and reinforcing the unstable stope in the mine underground comprises the following steps: inserting a pipe seam anchor rod into a rock wall at a broken part of a top plate, an upper plate or a lower plate of an unstable stope in a mine; binding a mesh on one side, far away from the rock wall, of the pipe seam anchor rod to form a first surface of the mesh; binding deformed steel bars to the pipe seam anchor rods and inserting the deformed steel bars into the ground, wherein the deformed steel bars contact the first surface of the mesh, and the mesh, the pipe seam anchor rods and the deformed steel bars form a support framework; and casting the post frame with concrete.
Preferably, the thread steel comprises at least two thread steels, and the thread steels are arranged on two sides of the first surface.
Preferably, the mesh sheet formed in a cylindrical shape includes the first surface, a second surface facing the first surface and abutting against the rock wall, and third and fourth surfaces facing each other and connecting the first and second surfaces.
The supporting and reinforcing device and the supporting and reinforcing method for the unstable stope in the mine underground are simple in material, small in construction difficulty, short in supporting time, and capable of supporting and protecting upper-wall broken surrounding rock well, and meanwhile, the supporting of the mining area support pillar framework can effectively reduce the effect of mining area stress on a top plate, an upper wall and a lower wall. And after the stope of the mining area is finished, the support frame is not dismantled for filling, and the support frame has important supporting and protecting effects on the next layered stope roof and the upper and lower trays.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a structural view of a pillar frame of the supporting and reinforcing device for an unstable stope in a mine well according to the present invention;
FIG. 2 is a structural diagram of a supporting and reinforcing device for an unstable stope in a mine;
FIG. 3 is a cross-sectional view of the supporting and reinforcing device for an underground unstable stope of a mine;
fig. 4 is a perspective view of a pillar frame of the supporting and reinforcing device for an unstable stope in a mine underground according to the present invention.
In the figure: 1. a pipe seam anchor rod; 2. a mesh sheet; 3. deformed steel bar; 4. concrete; 5. a strut frame; 6. the unstable stope supports the reinforcing apparatus in the mine pit; 7. a first side; 8. a second face.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-4, the supporting and reinforcing device 6 for the unstable stope in the mine well comprises a mesh sheet 2, wherein the mesh sheet 2 comprises a first surface 7 opposite to a rock wall. Taking fig. 3 as an example, the rock wall is the stope upjowl, however, the rock wall may also be the stope downjowl. Preferably, the mesh 2 is a metal mesh.
The supporting and reinforcing device 6 for the unstable stope in the mine well further comprises a plurality of pipe seam anchor rods 1, and the first surfaces 7 of the net pieces 2 transversely penetrate through the net pieces 2 and are inserted into the rock wall. The tube seam anchor 1 is used for supporting the mesh 2.
The supporting and reinforcing device 6 for the unstable stope in the mine well further comprises deformed steel bars 3, the deformed steel bars 3 are inserted into the ground and contact with the first surface 7 of the net piece 2, and the net piece 2, the plurality of pipe seam anchor rods 1 and the deformed steel bars 3 form a pillar framework 5. The deformed steel bars connect and fix a plurality of tube seam anchor rods 1.
Preferably, the deformed steel bars 3 comprise at least two deformed steel bars 3, which are respectively arranged on both sides of the first surface 7.
Preferably, each strut frame has a width of 0.8 to 2 meters, a thickness of 0.6 to 1.5 meters, and a height of 2 to 4.5 meters.
Preferably, the deformed steel bar 3 and the mesh piece 2 are bound on the pipe seam anchor rod 1, and the first surface 7 of the mesh piece 2 wraps the deformed steel bar 3.
Preferably, the plurality of tube seam bolts 1 comprises two rows of tube seam bolts 1 arranged longitudinally on either side of the first face 7.
Concrete 4 is poured on the pillar frames 5, so that the supporting and reinforcing device 6 for the unstable stope in the underground mine is formed.
Preferably, the mesh 2 is cylindrical and includes a first face 7, a second face 8 facing the first face 7 and abutting against the rock wall, and third and fourth faces facing each other and connecting the first and second faces 7 and 8.
The construction process of the invention is as follows: after pumice is detected and processed at the broken position of the top plate or the upper and lower plates, the pumice is cleaned to the ground, so that no virtual slag exists on the ground, a pipe seam anchor rod 1 is constructed on the upper plate or the lower plate and the top plate, and the pipe seam anchor rod 1 is inserted into a rock wall; folding and cutting a first surface 7 of the mesh 2 and binding the first surface on the pipe seam anchor rod 1; binding the deformed steel bars 3 on the pipe seam anchor rod 1 and inserting the pipe seam anchor rod into the ground, wherein the deformed steel bars 3 are in contact with a first surface 7 of the net piece 2, and the net piece 2, the pipe seam anchor rod 1 and the deformed steel bars 3 form a support frame 5; the pillar frame 5 is cast and molded by using a dry guniting machine with guniting material (i.e., concrete) of a C25 standard proportion.
The tube seam anchor 1 of the present invention is inserted into the rock wall from the first face 7 of the mesh 2, spaced from the rock wall without being closely attached thereto, so that the pillar frame 5 can be constructed together with the mesh 2 and the deformed steel bar 3 to support the roof and the upper tray. The supporting and reinforcing device and the supporting and reinforcing method for the unstable stope in the mine underground are simple in material, small in construction difficulty, short in supporting time, and capable of supporting and protecting upper-wall broken surrounding rock well, and meanwhile, the supporting of the mining area support pillar framework can effectively reduce the effect of mining area stress on a top plate, an upper wall and a lower wall. And after the stope of the mining area is finished, the support frame is not dismantled for filling, and the support frame has important supporting and protecting effects on the next layered stope roof and the upper and lower trays.
Although embodiments of the present invention have been shown and described above, it should be understood that the above embodiments are exemplary and not to be construed as limiting the present invention and that those skilled in the art may make modifications, alterations, substitutions and alterations to the above embodiments within the scope of the present invention.
Claims (8)
1. The utility model provides a mine is unstable stope in pit supports reinforcing apparatus, includes:
a mesh comprising a first face opposite a rock wall;
a plurality of tube seam anchors inserted into the rock wall from the first side of the mesh transversely through the mesh;
the deformed steel bar is inserted into the ground and contacts the first surface of the mesh, and the mesh, the plurality of pipe seam anchor rods and the deformed steel bar form a strut framework; and
concrete cast on the post frame,
wherein the mesh is cylindrical and includes the first surface, a second surface facing the first surface and closely attached to the rock wall, and third and fourth surfaces facing each other and connecting the first and second surfaces.
2. The mine downhole unstable stope supporting and reinforcing device according to claim 1, wherein the deformed steel bars comprise at least two deformed steel bars respectively arranged on two sides of the first surface.
3. The mine downhole unstable stope supporting and reinforcing device according to claim 1, wherein the deformed steel bars and the mesh are bound to the tube seam anchor rods, and the first surface of the mesh wraps the deformed steel bars.
4. The mine downhole unstable stope supporting and reinforcing apparatus according to claim 1, wherein the plurality of tube seam anchors comprises two rows of tube seam anchors arranged longitudinally on both sides of the first face.
5. The mine downhole unstable stope supporting and reinforcing device according to claim 1, wherein the mesh is a metal mesh.
6. The mine downhole unsecured stope support and reinforcement apparatus of claim 1, wherein each pillar frame has a width of 0.8 to 2 meters, a thickness of 0.6 to 1.5 meters, and a height of 2 to 4.5 meters.
7. A supporting and reinforcing method for an unstable stope in a mine well comprises the following steps:
inserting a pipe seam anchor rod into a rock wall at a broken part of a top plate, an upper plate or a lower plate of an unstable stope in a mine;
binding a mesh on one side of the pipe seam anchor rod far away from the rock wall to form a first surface of the mesh;
binding deformed steel bars to the pipe seam anchor rods and inserting the deformed steel bars into the ground, wherein the deformed steel bars contact the first surface of the mesh, and the mesh, the pipe seam anchor rods and the deformed steel bars form a support framework; and
pouring the strut frame with concrete,
wherein the mesh sheet formed in a tubular shape includes the first surface, a second surface facing the first surface and closely attached to the rock wall, and third and fourth surfaces facing each other and connecting the first and second surfaces.
8. The mine downhole unstable stope supporting and reinforcing method according to claim 7, wherein the deformed steel bars comprise at least two deformed steel bars, and the deformed steel bars are arranged on two sides of the first surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110047454.4A CN112855211B (en) | 2021-01-14 | 2021-01-14 | Supporting and reinforcing device and method for unstable stope in mine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110047454.4A CN112855211B (en) | 2021-01-14 | 2021-01-14 | Supporting and reinforcing device and method for unstable stope in mine |
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| Publication Number | Publication Date |
|---|---|
| CN112855211A CN112855211A (en) | 2021-05-28 |
| CN112855211B true CN112855211B (en) | 2023-01-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110047454.4A Active CN112855211B (en) | 2021-01-14 | 2021-01-14 | Supporting and reinforcing device and method for unstable stope in mine |
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| CN (1) | CN112855211B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2006100305A4 (en) * | 2002-09-25 | 2006-05-18 | Onesteel Reinforcing Pty Ltd | A mine roof support mesh |
| CN103277114A (en) * | 2013-04-23 | 2013-09-04 | 西南科技大学 | Non-sprayed-concrete anchor net supporting method of underground construction broken surrounding rocks |
| CN103277124A (en) * | 2013-06-06 | 2013-09-04 | 武汉科技大学 | Anchor-rod-combined supporting method for high-sulfur crush rock mine |
| CN108005675A (en) * | 2017-11-16 | 2018-05-08 | 中国电建集团昆明勘测设计研究院有限公司 | Dynamic superposition coupling supporting method and supporting structure for fault fracture zone roadway |
| CN110500115A (en) * | 2019-09-04 | 2019-11-26 | 长沙矿山研究院有限责任公司 | A kind of passive Support Method of fragmented rock body tunnel master |
| CN110735654A (en) * | 2019-11-27 | 2020-01-31 | 周伟永 | arch center for supporting underground tunnel and roadway engineering and rapid supporting method thereof |
| CN111022086A (en) * | 2019-12-27 | 2020-04-17 | 周伟永 | Single-layer arch frame for roadway engineering support and rapid support method thereof |
| CN211623446U (en) * | 2019-11-05 | 2020-10-02 | 中十冶集团城建工程有限公司 | Anchor net combined supporting system for arch frame |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107476809B (en) * | 2017-09-05 | 2019-06-11 | 长安大学 | A kind of large deformation control method of chlorite schist stratum longspan tunnel |
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2021
- 2021-01-14 CN CN202110047454.4A patent/CN112855211B/en active Active
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| AU2006100305A4 (en) * | 2002-09-25 | 2006-05-18 | Onesteel Reinforcing Pty Ltd | A mine roof support mesh |
| CN103277114A (en) * | 2013-04-23 | 2013-09-04 | 西南科技大学 | Non-sprayed-concrete anchor net supporting method of underground construction broken surrounding rocks |
| CN103277124A (en) * | 2013-06-06 | 2013-09-04 | 武汉科技大学 | Anchor-rod-combined supporting method for high-sulfur crush rock mine |
| CN108005675A (en) * | 2017-11-16 | 2018-05-08 | 中国电建集团昆明勘测设计研究院有限公司 | Dynamic superposition coupling supporting method and supporting structure for fault fracture zone roadway |
| CN110500115A (en) * | 2019-09-04 | 2019-11-26 | 长沙矿山研究院有限责任公司 | A kind of passive Support Method of fragmented rock body tunnel master |
| CN211623446U (en) * | 2019-11-05 | 2020-10-02 | 中十冶集团城建工程有限公司 | Anchor net combined supporting system for arch frame |
| CN110735654A (en) * | 2019-11-27 | 2020-01-31 | 周伟永 | arch center for supporting underground tunnel and roadway engineering and rapid supporting method thereof |
| CN111022086A (en) * | 2019-12-27 | 2020-04-17 | 周伟永 | Single-layer arch frame for roadway engineering support and rapid support method thereof |
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| CN112855211A (en) | 2021-05-28 |
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