CN110273699A - High-dipping resists soft ground coal layer stubbornly and stays coal column gob side entry retaining surrounding rock stability method for protecting support - Google Patents
High-dipping resists soft ground coal layer stubbornly and stays coal column gob side entry retaining surrounding rock stability method for protecting support Download PDFInfo
- Publication number
- CN110273699A CN110273699A CN201910620879.2A CN201910620879A CN110273699A CN 110273699 A CN110273699 A CN 110273699A CN 201910620879 A CN201910620879 A CN 201910620879A CN 110273699 A CN110273699 A CN 110273699A
- Authority
- CN
- China
- Prior art keywords
- complement
- coal
- anchor pole
- anchor
- dipping
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000003245 coal Substances 0.000 title claims abstract description 34
- 239000011435 rock Substances 0.000 title claims abstract description 20
- 238000007598 dipping method Methods 0.000 title claims abstract description 11
- 238000000034 method Methods 0.000 title claims abstract description 11
- 230000000295 complement effect Effects 0.000 claims abstract description 28
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 23
- 239000010959 steel Substances 0.000 claims abstract description 23
- 230000008093 supporting effect Effects 0.000 claims abstract description 17
- 201000010041 presbyopia Diseases 0.000 claims abstract description 8
- 230000000694 effects Effects 0.000 claims abstract description 4
- 239000000725 suspension Substances 0.000 claims abstract description 4
- 230000002035 prolonged effect Effects 0.000 claims abstract 2
- 238000003780 insertion Methods 0.000 claims 1
- 230000037431 insertion Effects 0.000 claims 1
- 238000005516 engineering process Methods 0.000 abstract description 6
- 230000002787 reinforcement Effects 0.000 abstract description 3
- 239000000463 material Substances 0.000 abstract description 2
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
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
- E21D11/14—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
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Lining And Supports For Tunnels (AREA)
- Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
Abstract
Soft ground coal layer is resisted stubbornly the invention discloses a kind of high-dipping stays coal column gob side entry retaining surrounding rock stability method for protecting support, comprising steps of 1) carry out encryption supporting to the suspension roof support of original rectangular array arrangement in such a way that reserved coal pier section is inserted into complement anchor pole using interval, the anchor pole after encryption supporting is arranged in five presbyopia formulas；2) in the middle and lower part of reserved coal pier, complement anchor cable, the anchor cable of every complement are arranged in the intermediate position between two laterally adjacent original anchor cables again；3) the axially extending steel bar ladder in tunnel, steel bar ladder and W-shaped steel band being evenly arranged and prolonged at the top of tunnel, cross mask effect is formed to back.The present invention passes through complement anchor pole, anchor cable and arrangement steel bar ladder, to roadway surrounding rock support reinforcement, supporting stability is more preferable, existing exploiting field is set only to arrange that the high-dipping of a coal working face resists soft ground coal layer mine stubbornly using edge air gallery technology, realize that driving can both send an air return lane less, shorten connecting time, and can largely save the costs such as fee of material, the expenditure that wage takes, promotes enterprise competitiveness.
Description
Technical field
The present invention relates to a kind of mine roadway wall rock reinforcing technology field, in particular to soft base thickness coal is resisted in a kind of high-dipping stubbornly
Layer future small coal pillar gob side entry retaining surrounding rock stability method for protecting support.
Background technique
The mine of a coal working face is only arranged for production exploiting field, supporting roadway surrounding rock generallys use in the prior art
The anchor pole of steel wire, W-shaped steel band and rectangular array arrangement.
The mine of a coal working face is only arranged for this exploiting field, if not using edge air gallery technology, increase is applied
The cost input of one air return lane of work, and cause the face of adopting can not normal continuance, influence mine normal production.
Mine has the modes such as top plate presplit blasting, the lane Rou Mohu, block code concrete block along the lane Kong Hu at present.For mine reality
Border situation, the mine big for seam inclination, coal seam is thicker will be unable to complete presplitting borehole according to top plate presplitting technique
Construction, and the quick-fried bulk rock mass fallen will pour transportation roadway under gravity, be unable to satisfy shield lane and require.According to soft mould
Lane technology is protected, because of the big reason of mining height, and there are eye mouth oblique volumn supportings to construct, soft mould installation difficulty is big, can not ensure safely
Problem, and it is higher using the lane Rou Mohu technical costs.
Therefore it to reduce cost input, reduce coal resources loss, shorten connecting time, needs a kind of new along the lane Kong Hu
Technology.
Summary of the invention
Stay coal column gob side entry retaining country rock steady in view of this, resisting soft ground coal layer stubbornly the object of the present invention is to provide a kind of high-dipping
Qualitative method for protecting support, to solve the problems, such as to gob side entry retaining surrounding rock consolidation supporting.
High-dipping of the present invention resists soft ground coal layer stubbornly and stays coal column gob side entry retaining surrounding rock stability method for protecting support, including following step
It is rapid:
1) to the anchor pole branch of original rectangular array arrangement in such a way that reserved coal pier section is inserted into complement anchor pole using interval
Shield carries out encryption supporting, and the anchor pole after encryption supporting is arranged in five presbyopia formulas；The five presbyopia formulas arrangement refers to that every four are in
The original anchor pole of rectangular arrangement is trapped among outside the anchor pole of a complement, and the complement anchor pole is located at the center of rectangle；
2) in the middle and lower part of reserved coal pier, complement anchor cable, the anchor cable of every complement are arranged in two laterally adjacent originals again
Intermediate position between beginning anchor cable, and the anchor cable of complement is driven into the length in floor strata not less than 2000mm, the anchor of complement
The exposed parts of rope are anchored on the W steel band of original arrangement；
3) it is evenly arranged and prolongs the axially extending steel bar ladder in tunnel at the top of the tunnel, the steel bar ladder and original arrangement
W steel band is in cross-shaped.
Beneficial effects of the present invention:
High-dipping of the present invention resists soft ground coal layer stubbornly and stays coal column gob side entry retaining surrounding rock stability method for protecting support, passes through complement anchor
Bar, anchor cable and the arrangement steel bar ladder axially extending along tunnel, to roadway surrounding rock support reinforcement, supporting stability is more preferable, makes existing
There is exploiting field only to arrange that the high-dipping of a coal working face resists soft ground coal layer mine stubbornly and can realize driving using edge air gallery technology
Both an air return lane can be sent less, shortens connecting time, and can largely save the costs such as fee of material, the expenditure that wage takes, and mentioned
Rise enterprise competitiveness.
Detailed description of the invention
Fig. 1 gob side entry retaining tunnel is along the original supporting expanded schematic diagram of country rock.
Five flower-shape of Fig. 2 anchors the supporting roadway surrounding rock expanded schematic diagram combined with cross mask.
Five flower-shape of Fig. 3 anchors the supporting roadway surrounding rock diagrammatic cross-section combined with cross mask.
Specific embodiment
The invention will be further described with reference to the accompanying drawings and examples.
As shown, soft ground coal layer is resisted in the present embodiment high-dipping, which stubbornly, stays coal column gob side entry retaining surrounding rock stability method for protecting support,
The following steps are included:
1) to the anchor pole branch of original rectangular array arrangement in such a way that reserved coal pier section is inserted into complement anchor pole 2 using interval
Shield carries out encryption supporting, and the anchor pole after encryption supporting is arranged in five presbyopia formulas；The five presbyopia formulas arrangement refers to that every four are in
The original anchor pole 1 of rectangular arrangement is trapped among outside the anchor pole 2 of a complement, and the complement anchor pole is located at the center of rectangle；In five presbyopia
For the suspension roof support structure of formula arrangement relative to existing suspension roof support structure in rectangular layout, supporting construction reliability is higher.
2) in the middle and lower part of reserved coal pier complement anchor cable again, the anchor cable 3 of every complement be arranged in two it is laterally adjacent
Intermediate position between original anchor cable 4, and the anchor cable of complement is driven into the length in floor strata and is not less than 2000mm, complement
The exposed parts of anchor cable are anchored on the W steel band 5 of original arrangement；Complement anchor cable and the anchor cable and W steel band cooperation energy for making complement
Preferably resist the radial deformation of roadway surrounding rock.
3) it is evenly arranged at the top of tunnel and prolongs the axially extending steel bar ladder 6 in tunnel, the steel bar ladder and original arrangement
W steel band in cross-shaped.Since W steel band is circumferentially disposed along tunnel, because of drift section during deformation of the surrounding rock in tunnel
It shrinks and W steel band changing of the relative positions cutting easily occurs, lose the effect of mask；The present embodiment will not generate change along axial in view of tunnel
Shape, therefore axially arrange four placing of reinforcements ladder again along tunnel, with original W steel band in cross-shaped, cross-shaped mask is matched
Better mask effect can be provided by closing wire netting 7.
Finally, it is stated that the above examples are only used to illustrate the technical scheme of the present invention and are not limiting, although referring to compared with
Good embodiment describes the invention in detail, those skilled in the art should understand that, it can be to skill of the invention
Art scheme is modified or replaced equivalently, and without departing from the objective and range of technical solution of the present invention, should all be covered at this
In the scope of the claims of invention.
Claims (1)
1. high-dipping resists soft ground coal layer stubbornly and stays coal column gob side entry retaining surrounding rock stability method for protecting support, it is characterised in that: including following
Step:
1) suspension roof support that original rectangular array is arranged in such a way that reserved coal pier section is using interval insertion complement anchor pole into
Row encryption supporting, the anchor pole after encryption supporting are arranged in five presbyopia formulas；The five presbyopia formulas arrangement refers to that every four are in rectangle
The original anchor pole of arrangement is trapped among outside the anchor pole of a complement, and the complement anchor pole is located at the center of rectangle；
2) in the middle and lower part of reserved coal pier, complement anchor cable, the anchor cable of every complement are arranged in two laterally adjacent original anchors again
Intermediate position between rope, and the anchor cable of complement is driven into the length in floor strata and is not less than 2000mm, the anchor cable of complement
Exposed parts are anchored on the W steel band of original arrangement；
3) the axially extending steel bar ladder in tunnel, the W steel of the steel bar ladder and original arrangement are evenly arranged and prolonged at the top of tunnel
Band forms the effect of cross mask in cross-shaped, to back.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910620879.2A CN110273699B (en) | 2019-07-10 | 2019-07-10 | Method for supporting stability of gob-side entry retaining surrounding rock of coal retaining pillar of steeply inclined hard-top soft-bottom coal seam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910620879.2A CN110273699B (en) | 2019-07-10 | 2019-07-10 | Method for supporting stability of gob-side entry retaining surrounding rock of coal retaining pillar of steeply inclined hard-top soft-bottom coal seam |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110273699A true CN110273699A (en) | 2019-09-24 |
| CN110273699B CN110273699B (en) | 2020-08-21 |
Family
ID=67962979
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910620879.2A Expired - Fee Related CN110273699B (en) | 2019-07-10 | 2019-07-10 | Method for supporting stability of gob-side entry retaining surrounding rock of coal retaining pillar of steeply inclined hard-top soft-bottom coal seam |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110273699B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103397905A (en) * | 2013-04-17 | 2013-11-20 | 唐建新 | System and method for achieving natural striding, falling and filling of coal beds, flexible roadway protection and complete gob-side entry retaining |
| CN103470286A (en) * | 2013-09-25 | 2013-12-25 | 四川省煤炭产业集团有限责任公司 | Gob-side entry retaining method realizing support by intercepting self-slip gangue through strip reinforcing steel bar mesh |
| CN204783071U (en) * | 2015-05-28 | 2015-11-18 | 四川川煤华荣能源股份有限公司大宝顶煤矿 | Lane group stays lane with keeping off body structure |
| CN106761867A (en) * | 2016-12-23 | 2017-05-31 | 四川广旺能源发展（集团）有限责任公司 | High-dipping surrounding rock of actual mining roadway stabilization supporting facility and support process |
-
2019
- 2019-07-10 CN CN201910620879.2A patent/CN110273699B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103397905A (en) * | 2013-04-17 | 2013-11-20 | 唐建新 | System and method for achieving natural striding, falling and filling of coal beds, flexible roadway protection and complete gob-side entry retaining |
| CN103470286A (en) * | 2013-09-25 | 2013-12-25 | 四川省煤炭产业集团有限责任公司 | Gob-side entry retaining method realizing support by intercepting self-slip gangue through strip reinforcing steel bar mesh |
| CN204783071U (en) * | 2015-05-28 | 2015-11-18 | 四川川煤华荣能源股份有限公司大宝顶煤矿 | Lane group stays lane with keeping off body structure |
| CN106761867A (en) * | 2016-12-23 | 2017-05-31 | 四川广旺能源发展（集团）有限责任公司 | High-dipping surrounding rock of actual mining roadway stabilization supporting facility and support process |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110273699B (en) | 2020-08-21 |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200821 |