CN107654247A - A kind of sliding structure area pole loose thick coal layer coal roadway tunneling is met head on anti-top coal leakage method for leakage - Google Patents
A kind of sliding structure area pole loose thick coal layer coal roadway tunneling is met head on anti-top coal leakage method for leakage Download PDFInfo
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- CN107654247A CN107654247A CN201710866131.1A CN201710866131A CN107654247A CN 107654247 A CN107654247 A CN 107654247A CN 201710866131 A CN201710866131 A CN 201710866131A CN 107654247 A CN107654247 A CN 107654247A
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- coal
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- leakage
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- wire mesh
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- 239000003245 coal Substances 0.000 title claims abstract description 80
- 238000000034 method Methods 0.000 title claims abstract description 27
- 230000005641 tunneling Effects 0.000 title claims abstract description 21
- 238000010276 construction Methods 0.000 claims abstract description 11
- 239000003795 chemical substances by application Substances 0.000 claims description 9
- 238000004873 anchoring Methods 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 7
- 241001074085 Scophthalmus aquosus Species 0.000 claims description 6
- 238000005553 drilling Methods 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 230000008569 process Effects 0.000 claims description 5
- 230000003014 reinforcing effect Effects 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- 210000003205 muscle Anatomy 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000000518 rheometry Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 230000003245 working effect Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
-
- 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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- 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)
- Road Paving Structures (AREA)
Abstract
Meet head on anti-top coal leakage method for leakage, comprise the following steps the invention discloses a kind of sliding structure area pole loose thick coal layer coal roadway tunneling：During tunnelling, along tunnel axial direction, tunneled successively and bolting with wire mesh according to circulation step pitch；Complete first in front of bolting with wire mesh section, after tunneling half of anchor pole array pitch, complete to bore at half of array pitch of bolting with wire mesh section in advance in back and beaten several structure compensation boltholes, and the prestressed structure compensation anchor pole in several structure compensation boltholes；Continue to tunnel half of anchor pole array pitch；According to the normal bolting with wire mesh of bolting with wire mesh scheme construction being pre-designed at the top of tunnel, and realize prestress anchoraging；Carry out the construction of subsequent cycle, until completing tunnelling and bolting with wire mesh work.The leakage that the present invention can effectively prevent tunnel boring head top coal in the extremely loose high seam in sliding structure area emits and the relaxation and creep of boring head rear top coal, substantially increases the security of construction.
Description
Technical field
The invention belongs to Coal Mining Technology field, and in particular to a kind of sliding structure area pole loose thick coal layer coal roadway tunneling
Anti- top coal of meeting head on leaks method for leakage.
Background technology
After Zhengzhou Mining Area coal-forming stratum is influenceed by strong sliding structure, the primary structure and construction of coal are seriously broken
Bad, generally below 0.1~0.3, coal seam thickness drastically changes seam hardness coefficient between 0~37.8m, is typical powder piece
Columnar structure coal.Because the coal strength is low, easy loose, easy rheology, top coal leakiness emits during tunnelling, bolting with wire mesh is implemented
It is extremely difficult.Can boring head top coal leakiness emit problem as smoothly and reliably in the loose thick coal layer coal road of sliding structure area pole
Implement the great difficult problem of anchor-net Shoring Technique.
At present, the modernization suspension roof support theory based on high intensity, high rigidity, high reliability and low-density, high pre-stress
Power bolting supporting technology is used widely in all kinds of coal mine roadways, but for sliding structure area coal body is fugitive, easy rheology
Condition, how effectively to avoid the leakage of boring head from emitting, boring head rear top coal reduction research it is less, cause extremely soft thickness
Coal roadway bolting with wire mesh theory imperfection, coal road bolting with wire mesh are difficult to smoothly implement, and such coal road is always high-strength prestressed
The forbidden zone of bolting with wire mesh.
The content of the invention
In order to overcome the deficiencies in the prior art, it is an object of the invention to provide a kind of extremely soft thickness in sliding structure area
Coal roadway boring head anti-top coal leakage method for leakage, top coal may leak the region emitted during tunnelling, by advance
Complete bolting with wire mesh half of array pitch of section and arrange several structure compensation anchor poles, realize between structure compensation anchor pole and existing anchor pole
Complementation, strengthen bolting with wire mesh bearing structure, solve the problem that emits of boring head top coal leakiness, ensure that bolting with wire mesh is smoothly implemented
With the safety in production of mine.
To achieve the above object, the technical solution adopted by the present invention is：
A kind of sliding structure area pole loose thick coal layer coal roadway tunneling is met head on anti-top coal leakage method for leakage, is comprised the following steps：
(1) during tunnelling, along tunnel axial direction, tunneled successively and bolting with wire mesh according to circulation step pitch；First
Complete in front of bolting with wire mesh section, after tunneling half of anchor pole array pitch, bolting with wire mesh section has been completed in advance half in back
Bored at array pitch and beat several structure compensation boltholes, and the prestressed structure compensation in several structure compensation boltholes
Anchor pole；
(2) after the completion of step (1), continue to tunnel half of anchor pole array pitch；
(3) after the completion of step (2), according to the normal anchor net branch of bolting with wire mesh scheme construction being pre-designed at the top of tunnel
Shield, and realize prestress anchoraging；
(4) after completing step (1), (2), (3), the construction of subsequent cycle is carried out, until completing tunnelling and anchor net branch
Nurse makees.
In the step (1), circulation step pitch is equal to anchor pole array pitch, is 800mm.
In the step (1), the method for arranging of prestressed structure compensation anchor pole is：Prestressed structure compensates anchor pole vertical top
Plate is installed, it is desirable to which the anchor pole that prestressed structure compensates anchor pole and normal bolting with wire mesh section staggers half of bolt interval；And
The bolt interval for completing to arrange in bolting with wire mesh section is 800mm × 800mm, often arranges prestressed structure compensation anchor pole number n
For：N=N-1；In formula：N is to have completed the number that top plate arrangement in bolting with wire mesh section often arranges anchor pole.
In the step (1), half of array pitch brill of supporting section has been completed in advance in back and has beaten several structure compensations
The step of bolthole is：By the anchor pole in Anchor Agent anchoring drilling, anchor rod pallet board is installed in end of anchor rod, then anchor pole applied
Add pretightning force.
In the step (1), anchor pole and the prestressed structure of bolting with wire mesh section compensate specification and its anchoring side of anchor pole
Formula is consistent：Shank diameter is 20mm, length 2400mm, and Anchor Agent uses each one of K2350 and Z2350, and bore diameter
For 28mm.
In the step (1), during prestressed structure compensation anchor pole, anchor is compensated to original anchor pole and prestressed structure
Bar applies 40kN pretightning force.
Concretely comprising the following steps in the step (3)：According to the anchor in the bolting with wire mesh scheme being pre-designed at the top of tunnel
The brill of array pitch progress bolthole is beaten between bar, and by the anchor pole in Anchor Agent anchoring drilling, metal mesh sheet, peace are laid in end of anchor rod
Steel loading muscle ladder beam and anchor rod pallet board, and pretightning force is applied to anchor pole.
In the step (3), metal mesh sheet uses graticules, and its mesh specification is 60mm × 60mm, and reinforcing bar ladder beam is adopted
It is process with a diameter of 14mm round steel, anchor rod pallet board a diameter of 150mm, thickness 10mm.
Beneficial effect：The sliding structure area pole loose thick coal layer coal roadway tunneling of the present invention is met head on anti-top coal leakage method for leakage, is led to
Cross and met head on top plate advanced half of anchor pole array pitch arrangement compensation anchor pole in tunnelling, can effectively prevent sliding structure area pole
The leakage of tunnel boring head top coal emits and the relaxation and creep of boring head rear top coal in loose high seam, efficiently solves pick
Lane is met head on the technical barrier that top coal leakiness emits, and ensure that the smooth implementation of bolting with wire mesh, improves the safety of bolting with wire mesh construction
Property.Meanwhile the complementation between existing anchor pole and structure compensation anchor pole is realized, enhance support top coal drift bolting with wire mesh carrying knot
The stabilization of structure.Its operating process is simple, application easy to spread.
Brief description of the drawings
Fig. 1 is that a kind of sliding structure area pole loose thick coal layer coal roadway tunneling of the invention is met head on the signal of anti-top coal leakage method for leakage
Figure；
Fig. 2 is back supporting expanded view.
In figure：1- has completed the anchor pole in bolting with wire mesh section, 2- anchor rod pallet boards, 3- reinforcing bar ladder beams, 4- structures
Compensation anchor pole, 5- metal mesh sheets, 6- roadway heads, 7- tunnels, 8-complete bolting with wire mesh section.
Embodiment
The present invention is further described below in conjunction with the accompanying drawings.
Explanation of nouns：
Circulate step pitch：Step pitch is tunneled for circulation, is referred on roadway head direction of propulsion, front and rear driving twice is applied
The distance that tunnel is promoted between work.
Anchor pole array pitch：Refer to the distance between every two rows anchor pole.
Anchor pole spacing：Refer to the distance between same row's anchor pole.
Bolt interval：Refer to the distance between every two rows anchor pole and the distance between same row's anchor pole.
The example is the coal seam thickness 7.2m by taking Zhengzhou coal industry group ore deposit stope drift active workings as an example, and head-room is
3.5m, width 5.0m.
As shown in Figure 1 and Figure 2, a kind of sliding structure area pole loose thick coal layer coal roadway tunneling of the invention is met head on the leakage of anti-top coal
Method for leakage, comprise the following steps：
(1) when tunnel 7 is tunneled, along tunnel axial direction, tunneled successively and bolting with wire mesh according to circulation step pitch；First
The front of bolting with wire mesh section 8 is completed, after tunneling half of anchor pole array pitch, bolting with wire mesh section 8 half has been completed in advance in back
Bored at individual array pitch and beat several structure compensation boltholes, and prestressed structure is mended in several structure compensation boltholes
Repay anchor pole 4；
Wherein, circulation step pitch is equal to anchor pole array pitch, is 800mm；
Prestressed structure compensation anchor pole 4 method for arranging be：Prestressed structure compensates 4 vertical mounting of roof plate of anchor pole, it is desirable to
The anchor pole 1 that prestressed structure compensates anchor pole 4 and normal bolting with wire mesh section staggers half of bolt interval；And anchor net branch is completed
The bolt interval arranged in shield section 8 is 800mm × 800mm, often arranges prestressed structure compensation 4 number n of anchor pole and is：N=N-
1；In formula：N is to have completed the number that top plate arrangement in bolting with wire mesh section 8 often arranges anchor pole 1；
Having completed the step of half of the array pitch brill of supporting section 8 beats several structure compensation anchor poles 4 in advance in back is：
Anchor pole 4 is compensated by the prestressed structure in Anchor Agent anchoring drilling, in prestressed structure compensation anchor pole 4 tail end installation anchor pole support
Disk, pretightning force then is applied to prestressed structure compensation anchor pole 4；
The anchor pole 1 of bolting with wire mesh section is consistent with the specification and its anchorage style of prestressed structure compensation anchor pole 4：The body of rod is straight
Footpath is 20mm, and length 2400mm, Anchor Agent uses each one of K2350 and Z2350, and bore diameter is 28mm；
During prestressed structure compensation anchor pole 4,40kN is applied to original anchor pole 1 and prestressed structure compensation anchor pole 4
Pretightning force；
(2) after the completion of step (1), continue to tunnel half of anchor pole array pitch；
(3) after the completion of step (2), according to the normal anchor net branch of bolting with wire mesh scheme construction being pre-designed at the top of tunnel
Shield, and realize prestress anchoraging；
Concretely comprise the following steps：At the top of tunnel anchor pole is carried out according to the bolt interval in the bolting with wire mesh scheme being pre-designed
The brill in hole is beaten, and by the anchor pole 1 in Anchor Agent anchoring drilling, metal mesh sheet 5, installation reinforcing bar ladder beam 3 are laid in the tail end of anchor pole 1
With anchor rod pallet board 2, and to anchor pole 1 apply pretightning force；
Wherein, metal mesh sheet uses graticules, and its mesh specification is 60mm × 60mm, and reinforcing bar ladder beam is using a diameter of
14mm round steel is process, anchor rod pallet board a diameter of 150mm, thickness 10mm；
(4) after completing step (1), (2), (3), the construction of subsequent cycle is carried out, until completing tunnelling and anchor net branch
Nurse makees.
The present invention provides a kind of sliding structure area pole loose thick coal layer coal roadway tunneling and met head on anti-top coal leakage method for leakage, effectively solution
Jue Liaojue meets head in lane the technical barrier that top coal leakiness emits, and ensure that the smooth implementation of bolting with wire mesh, improves bolting with wire mesh construction
Security.Meanwhile the complementation between existing anchor pole and structure compensation anchor pole is realized, enhance support top coal drift bolting with wire mesh
The stability of bearing structure.Its operating process is simple, application easy to spread.
Described above is only the preferred embodiment of the present invention, it should be pointed out that：For the ordinary skill people of the art
For member, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (8)
- The anti-top coal leakage method for leakage 1. a kind of sliding structure area pole loose thick coal layer coal roadway tunneling is met head on, it is characterised in that：Including with Lower step：(1) during tunnelling, along tunnel axial direction, tunneled successively and bolting with wire mesh according to circulation step pitch；Complete first In front of bolting with wire mesh section, after tunneling half of anchor pole array pitch, half of array pitch of bolting with wire mesh section has been completed in advance in back Bore and make several structure compensation boltholes, and the prestressed structure compensation anchor in several structure compensation boltholes in place Bar；(2) after the completion of step (1), continue to tunnel half of anchor pole array pitch；(3) after the completion of step (2), constructed normal bolting with wire mesh according to the bolting with wire mesh scheme that is pre-designed at the top of tunnel, And realize prestress anchoraging；(4) after completing step (1), (2), (3), the construction of subsequent cycle is carried out, until completing tunnelling and bolting with wire mesh work Make.
- The anti-top coal leakage method for leakage 2. sliding structure area according to claim 1 pole loose thick coal layer coal roadway tunneling is met head on, its It is characterised by：In the step (1), circulation step pitch is equal to anchor pole array pitch, is 800mm.
- The anti-top coal leakage method for leakage 3. sliding structure area according to claim 1 pole loose thick coal layer coal roadway tunneling is met head on, its It is characterised by：In the step (1), the method for arranging of prestressed structure compensation anchor pole is：Prestressed structure compensation anchor pole is vertical Mounting of roof plate, it is desirable to which the anchor pole that prestressed structure compensates anchor pole and normal bolting with wire mesh section staggers half of bolt interval；And The bolt interval for having completed to arrange in bolting with wire mesh section is 800mm × 800mm, often arranges prestressed structure compensation anchor pole number N is：N=N-1；In formula：N is to have completed the number that top plate arrangement in bolting with wire mesh section often arranges anchor pole.
- The anti-top coal leakage method for leakage 4. sliding structure area according to claim 1 pole loose thick coal layer coal roadway tunneling is met head on, its It is characterised by：In the step (1), half of array pitch brill of supporting section has been completed in advance in back and has beaten several structure compensations The step of bolthole is：By the anchor pole in Anchor Agent anchoring drilling, anchor rod pallet board is installed in end of anchor rod, then anchor pole applied Add pretightning force.
- The anti-top coal leakage method for leakage 5. sliding structure area according to claim 1 pole loose thick coal layer coal roadway tunneling is met head on, its It is characterised by：In the step (1), anchor pole and the prestressed structure of bolting with wire mesh section compensate specification and its anchoring side of anchor pole Formula is consistent：Shank diameter is 20mm, length 2400mm, and Anchor Agent uses each one of K2350 and Z2350, and bore diameter For 28mm.
- The anti-top coal leakage method for leakage 6. sliding structure area according to claim 4 pole loose thick coal layer coal roadway tunneling is met head on, its It is characterised by：In the step (1), during prestressed structure compensation anchor pole, original anchor pole and prestressed structure are compensated Anchor pole applies 40kN pretightning force.
- The anti-top coal leakage method for leakage 7. sliding structure area according to claim 1 pole loose thick coal layer coal roadway tunneling is met head on, its It is characterised by：Concretely comprising the following steps in the step (3)：According to the anchor in the bolting with wire mesh scheme being pre-designed at the top of tunnel The brill of array pitch progress bolthole is beaten between bar, and by the anchor pole in Anchor Agent anchoring drilling, metal mesh sheet, peace are laid in end of anchor rod Steel loading muscle ladder beam and anchor rod pallet board, and pretightning force is applied to anchor pole.
- The anti-top coal leakage method for leakage 8. sliding structure area according to claim 7 pole loose thick coal layer coal roadway tunneling is met head on, its It is characterised by：In the step (3), metal mesh sheet uses graticules, and its mesh specification is 60mm × 60mm, and reinforcing bar ladder beam is adopted It is process with a diameter of 14mm round steel, anchor rod pallet board a diameter of 150mm, thickness 10mm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710866131.1A CN107654247B (en) | 2017-09-22 | 2017-09-22 | A kind of sliding structure area pole loose thick coal layer coal roadway tunneling is met head on anti-top coal leakage method for leakage |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710866131.1A CN107654247B (en) | 2017-09-22 | 2017-09-22 | A kind of sliding structure area pole loose thick coal layer coal roadway tunneling is met head on anti-top coal leakage method for leakage |
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| CN107654247A true CN107654247A (en) | 2018-02-02 |
| CN107654247B CN107654247B (en) | 2019-04-16 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109595014A (en) * | 2018-11-06 | 2019-04-09 | 首钢集团有限公司 | A kind of bolting with wire mesh method |
| CN110513129A (en) * | 2019-09-26 | 2019-11-29 | 黄祖军 | A kind of loose thick coal layer roadway workface fore-support supporting construction and method for protecting support |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102839984A (en) * | 2012-08-31 | 2012-12-26 | 山西晋城无烟煤矿业集团有限责任公司 | Oversized-section underground supporting structure |
| CN103362519A (en) * | 2013-01-31 | 2013-10-23 | 中国矿业大学(北京) | Safe and quick coal roadway tunneling method |
| CN103670426A (en) * | 2013-12-31 | 2014-03-26 | 四川川煤华荣能源股份有限公司花山煤矿 | Large-inclination-angle and large-section roadway construction method |
| CN105134269A (en) * | 2015-08-17 | 2015-12-09 | 河南理工大学 | Control technology for roadway surrounding rock achieving cooperative load bearing by enabling anchor cables to penetrate through sheds |
| CN106089238A (en) * | 2016-08-19 | 2016-11-09 | 淮南矿业(集团)有限责任公司 | A kind of high seam driuing along goaf support system |
| CN107143338A (en) * | 2017-06-28 | 2017-09-08 | 陕西煤业化工技术研究院有限责任公司 | A kind of coal mine roadway driving and method for protecting support |
-
2017
- 2017-09-22 CN CN201710866131.1A patent/CN107654247B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102839984A (en) * | 2012-08-31 | 2012-12-26 | 山西晋城无烟煤矿业集团有限责任公司 | Oversized-section underground supporting structure |
| CN103362519A (en) * | 2013-01-31 | 2013-10-23 | 中国矿业大学(北京) | Safe and quick coal roadway tunneling method |
| CN103670426A (en) * | 2013-12-31 | 2014-03-26 | 四川川煤华荣能源股份有限公司花山煤矿 | Large-inclination-angle and large-section roadway construction method |
| CN105134269A (en) * | 2015-08-17 | 2015-12-09 | 河南理工大学 | Control technology for roadway surrounding rock achieving cooperative load bearing by enabling anchor cables to penetrate through sheds |
| CN106089238A (en) * | 2016-08-19 | 2016-11-09 | 淮南矿业(集团)有限责任公司 | A kind of high seam driuing along goaf support system |
| CN107143338A (en) * | 2017-06-28 | 2017-09-08 | 陕西煤业化工技术研究院有限责任公司 | A kind of coal mine roadway driving and method for protecting support |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109595014A (en) * | 2018-11-06 | 2019-04-09 | 首钢集团有限公司 | A kind of bolting with wire mesh method |
| CN109595014B (en) * | 2018-11-06 | 2021-05-25 | 首钢集团有限公司 | Anchor net supporting method |
| CN110513129A (en) * | 2019-09-26 | 2019-11-29 | 黄祖军 | A kind of loose thick coal layer roadway workface fore-support supporting construction and method for protecting support |
| CN110513129B (en) * | 2019-09-26 | 2024-04-02 | 黄祖军 | Advanced roof-protecting supporting structure and method for roadway of soft and thick coal seam working face |
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