CN113503167B - Anchor cable reinforced triangular anti-falling rock beam - Google Patents
Anchor cable reinforced triangular anti-falling rock beam Download PDFInfo
- Publication number
- CN113503167B CN113503167B CN202110789829.4A CN202110789829A CN113503167B CN 113503167 B CN113503167 B CN 113503167B CN 202110789829 A CN202110789829 A CN 202110789829A CN 113503167 B CN113503167 B CN 113503167B
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- caving
- rock beam
- anchor cable
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- anchor
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- 239000011435 rock Substances 0.000 title claims abstract description 23
- 238000001514 detection method Methods 0.000 claims abstract description 8
- 238000004873 anchoring Methods 0.000 claims description 2
- 230000003014 reinforcing effect Effects 0.000 abstract description 2
- 238000005065 mining Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- QRJOYPHTNNOAOJ-UHFFFAOYSA-N copper gold Chemical compound [Cu].[Au] QRJOYPHTNNOAOJ-UHFFFAOYSA-N 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- 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
- E21D11/006—Lining anchored in the rock
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
Abstract
The invention relates to an anchor cable reinforced triangular anti-caving rock beam, wherein a run-through tunnel is respectively constructed on two sides of the top outside the plane influence range of a caving region, two rows of opposite-pull anchor cables are constructed in the run-through tunnels on two sides towards the center of the caving region, the triangular rock beam for reinforcing the anchor cable bears and reduces the vertical load of the upper part, the caving region is prevented from further caving upwards, and ore removal, dead region detection and filling operation of the dead region at the bottom of the caving region can be completed under the bearing of the rock beam.
Description
Technical Field
The invention relates to the field of underground engineering, in particular to an anchor cable reinforced triangular anti-caving rock beam.
Background
The sublevel open stoping subsequent filling mining method and the sublevel open stoping subsequent filling mining method have the advantages of high production capacity and the like, occupy a large proportion in metal and nonmetal mines, but easily cause the natural caving of ore bodies on the upper part of a stope dead zone and lose control when the sublevel open stoping subsequent filling mining method and the sublevel open stoping subsequent filling mining method meet adverse geological conditions, and the phenomenon of caving of the upper part of a stope dead zone in China is caused, for example, the phenomenon of caving of Anqing copper mines, Shijin mountain gold copper mines and the like in China occurs.
At present, in the prior art, the caving prevention is to construct filling and drilling holes at the upper part of a caving dead zone, and fill the dead zone by filling materials from top to bottom, but the caving ore at the lower part of the filling materials is difficult to remove ore and stope after filling the filling materials, so that the technical problems of ore loss, difficult detection of the shape of the dead zone, influence on the stope of peripheral ore blocks and the like exist.
Disclosure of Invention
The invention aims to solve the technical problem of overcoming the defects in the prior art and provides an anchor cable reinforced triangular anti-caving rock beam which can prevent a dead zone from further caving upwards and realize ore removal, dead zone detection and filling operation in the dead zone under the protection of the rock beam.
The invention solves the problems of the prior art, and adopts the following technical scheme:
and respectively constructing a drift tunnel at the top outside the influence range of the plane of the caving area along the two sides of the long axis direction of the caving plane, respectively constructing a horizontal counter-pulling anchor cable and an upward counter-pulling anchor cable in the drift tunnel towards the center above the caving area to form a triangular rock beam reinforced by the anchor cables, bearing the vertical load of the upper part, preventing the caving area from further caving upwards, and finishing the ore removal, detection and filling operation of the bottom dead area under the bearing of the rock beam.
Compared with the prior art, the invention has the following beneficial effects or advantages:
the problem that ore removal in the caving area and effective detection of the shape of the caving area cannot be carried out in the prior art is effectively solved, further caving is prevented by reinforcing the rock beam at the top of the caving area through a triangle, and ore removal, detection of the caving area and filling operation are carried out under the bearing of the rock beam.
Drawings
Fig. 1 is a schematic front view of an anchor cable reinforced triangular anti-caving rock beam structure provided by the invention.
Fig. 2 is a schematic top view of fig. 1.
In the drawings, the reference symbols respectively denote:
1. the method comprises the steps of (1) drawing an anchor cable upwards in a drift roadway (2), drawing the anchor cable upwards in a counter-drawing manner (3), drawing the anchor cable horizontally in a counter-drawing manner (4), caving in an empty area range (5), stockpiling ore (6), drawing an ore roadway (7), drawing an upper plate in a drift roadway (8), drawing an upper plate in a drift roadway (alpha), drawing the anchor cable upwards in a counter-drawing manner (L), and drawing the anchor cable upwards in a counter-drawing manner (overlapping length).
The present invention is described in further detail below with reference to the attached drawings.
Detailed Description
Referring to fig. 1-2, a drift tunnel (1) is respectively constructed at the top outside the influence range of the plane of the caving area along the two sides of the long axis direction of the caving plane, a horizontal counter-pulling anchor cable (3) and an upward counter-pulling anchor cable (2) are respectively constructed at the center of the inner part of the drift tunnel (1) above the caving area (4), a triangular rock beam reinforced by the anchor cables is formed, the vertical load of the upper part can be borne, the caving area (4) is prevented from further caving upwards, and the ore removal, detection and filling operation of the bottom dead area (4) is completed under the bearing of the rock beam.
The invention may further be:
the triangular rock beam is an isosceles triangle simply supported beam and can convert the vertical load on the upper part into structural internal force through a beam structure.
Upward opposite-pulling anchor cables (2) and horizontal opposite-pulling anchor cables (3) in the through tunnel (1) on the two sides are arranged in a staggered mode on the plane, and the overlapping length (L) of the opposite-pulling anchor cables is not less than the length of a fixed section of the anchor cables.
The elevation angle (alpha) of the upward oppositely-pulling anchor cable (2) in the tunnel (1) at the two sides is determined by mechanical calculation and is smaller than the natural repose angle.
In this example, the fall range in the major axis direction is about 50m, the minor axis is 20m, the fall height is 35m, and has a further upward caving trend, in order to prevent the caving zone (4) from continuously caving and ensure the normal stoping of the upper ore body, constructing vein-penetrating roadways (1) at two sides outside the influence range of 10m of the caving zone (4) in the direction parallel to the long axis to communicate an upper-disk vein-penetrating roadway (7) and a lower-disk vein-penetrating roadway (8), wherein the vein-penetrating roadway (1) is vertically high with the top of the caving zone by 15m, an upward opposite-pulling anchor cable (2) and a horizontal opposite-pulling anchor cable (3) are constructed in a tunnel (1) constructed on two sides, the diameter of a conventional anchor cable is 17.9mm, the anchoring length is 1.5m, the overlapping length (L) of the opposite-pulling anchor cables is 2m, the prestress is 50kN, the distance between the anchor cables is 2m, the upward angle of elevation (alpha) of the upward opposite-pulling anchor cable (2) is 40 degrees (the natural angle of repose is 45 degrees), the length of the anchor cable is 30m, and the length of the horizontal opposite-pulling anchor cable (3) is 22 m.
After the construction of the anchor cable is finished, stockpiling ores (5) in the caving dead zone (4) through the ore removal roadway (6), removing ores through the ore removal roadway (6) at the bottom, scanning the caving dead zone (4) by using three-dimensional laser, constructing, filling and drilling the caving dead zone (4) through the drift roadway (1) at one side, carrying out peripheral ore body mining design and normal mining and filling based on the three-dimensional laser scanning result, and mining ore bodies on the upper part of the caving dead zone (4) to the fan-shaped holes in the construction of the drift roadways (1) at two sides.
As described above, the present invention can be preferably realized. The above embodiments are only preferred embodiments of the present invention, but the embodiments of the present invention are not limited by the above embodiments, and other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be regarded as equivalent replacements within the scope of the present invention.
Claims (4)
1. The triangular anti-caving rock beam reinforced by the anchor cables is characterized in that a drift tunnel (1) is respectively constructed at the top outside the influence range of a plane of an caving area along the two sides of the long axis direction of the caving plane, a horizontal counter-pulling anchor cable (3) and an upward counter-pulling anchor cable (2) are respectively constructed at the center above the caving area (4) in the drift tunnel (1), the triangular rock beam reinforced by the anchor cables can be formed, the vertical load of the upper part can be borne, the caving area (4) is prevented from further caving upwards, and the ore removal, detection and filling operation of the bottom dead area (4) is completed under the bearing of the rock beam.
2. The anchor rope reinforced triangular anti-caving rock beam as claimed in claim 1, wherein the triangular rock beam is an isosceles triangular simply supported beam, and converts an upper vertical load into a structural internal force through a beam structure.
3. The anchor cable reinforced triangular anti-caving rock beam as claimed in claim 1, wherein upward counter-pulling anchor cables (2) and horizontal counter-pulling anchor cables (3) in the through-drift tunnels (1) on both sides are arranged in a staggered manner on a plane, and the overlapping length L of the counter-pulling anchor cables is not less than the length of the anchoring sections of the anchor cables.
4. The anchor cable reinforced triangular anti-caving rock beam as claimed in claim 1, wherein the elevation angle α of the upward-pulling anchor cable (2) in the through-drift roadway (1) on both sides is determined by mechanical calculation and is smaller than the natural angle of repose.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110789829.4A CN113503167B (en) | 2021-07-13 | 2021-07-13 | Anchor cable reinforced triangular anti-falling rock beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110789829.4A CN113503167B (en) | 2021-07-13 | 2021-07-13 | Anchor cable reinforced triangular anti-falling rock beam |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113503167A CN113503167A (en) | 2021-10-15 |
| CN113503167B true CN113503167B (en) | 2022-05-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110789829.4A Active CN113503167B (en) | 2021-07-13 | 2021-07-13 | Anchor cable reinforced triangular anti-falling rock beam |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19616444A1 (en) * | 1995-07-29 | 1997-02-27 | Seiz Rudolf | Lattice beam with bars and bracing, especially for tunnelling |
| CN109763861A (en) * | 2019-01-16 | 2019-05-17 | 中国矿业大学 | One kind cutting intraocular fault belt treatment of roof collapse method |
| CN111101968A (en) * | 2019-12-29 | 2020-05-05 | 中铁二院工程集团有限责任公司 | Large karst cavity tunnel large deformation frame rock fall prevention structure and construction method |
| CN111878121A (en) * | 2020-08-03 | 2020-11-03 | 天津爱纷销科技有限公司 | Tunnel repairing method |
| CN112483134A (en) * | 2020-12-03 | 2021-03-12 | 陕西旬邑青岗坪矿业有限公司 | Method for treating roof fall of roadway |
-
2021
- 2021-07-13 CN CN202110789829.4A patent/CN113503167B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19616444A1 (en) * | 1995-07-29 | 1997-02-27 | Seiz Rudolf | Lattice beam with bars and bracing, especially for tunnelling |
| CN109763861A (en) * | 2019-01-16 | 2019-05-17 | 中国矿业大学 | One kind cutting intraocular fault belt treatment of roof collapse method |
| CN111101968A (en) * | 2019-12-29 | 2020-05-05 | 中铁二院工程集团有限责任公司 | Large karst cavity tunnel large deformation frame rock fall prevention structure and construction method |
| CN111878121A (en) * | 2020-08-03 | 2020-11-03 | 天津爱纷销科技有限公司 | Tunnel repairing method |
| CN112483134A (en) * | 2020-12-03 | 2021-03-12 | 陕西旬邑青岗坪矿业有限公司 | Method for treating roof fall of roadway |
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| Publication number | Publication date |
|---|---|
| CN113503167A (en) | 2021-10-15 |
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