CN204572003U - Angular region Surrounding Rock Control system is smeared during a kind of comprehensive coal face ending - Google Patents
Angular region Surrounding Rock Control system is smeared during a kind of comprehensive coal face ending Download PDFInfo
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- CN204572003U CN204572003U CN201520239883.1U CN201520239883U CN204572003U CN 204572003 U CN204572003 U CN 204572003U CN 201520239883 U CN201520239883 U CN 201520239883U CN 204572003 U CN204572003 U CN 204572003U
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Abstract
Smear angular region Surrounding Rock Control system during a kind of comprehensive coal face ending, it is characterized in that comprehensive coal face is withdrawn tunnel and stope drift active workings junction from pick to be designed to smear angle, forms the radian seamlessly transitted.It is violent that angular region strata behaviors is smeared in comprehensive coal face termination, particularly for the mining conditions of the thick irregular coal seam of spy, by top board front pre-grouting, fragmentation thick top coal is reinforced, lay diamond mesh, steel band and anchor shaft anchor cable are installed, and adopt a beam two post mode to strengthen roof timbering; Smear angle rib to lay wire lath, reinforcing bar ladder beam and anchor pole are installed, and then during realizing special thick irregular coal seam comprehensive coal face ending, the control of angular region surrounding rock stability is smeared in termination.This system improves the globality bearing strength of smearing angular region country rock, effectively controls the deformation failure of country rock, and what ensured safety withdraws space, reduces lumber consumption, alleviates labor strength, improve production efficiency and economic benefit.
Description
Technical field
The utility model relates to a kind of colliery Surrounding Rock Control system, specifically smears angular region Surrounding Rock Control system during a kind of comprehensive coal face ending.
Background technology
Fully mechanized coal face edding technique is the system engineering of a too many levels complexity, all many-sides such as it relates to resource reclaim, mine pressure, engineering preparation, equipment are removed; How to select rational support form, avoid stope periodic weighting, being guarantee to remove the stable basis of frame passage, is also the key of edding technique.Combining in conjunction with special thick irregular coal seam and put the feature that stope periodic weighting is obvious, limited span is larger, use Stope Sheet ore deposit to press theoretical, guaranteeing stopping adopting position control before rupture in top always.But it is comparatively large that fully mechanized coal face removes frame passage sky top along end ending, top coal be remove built on stilts between immediate roof truly, if not supporting timely and effectively, be then difficult to the distortion controlling country rock, keep the stable of thin plate.Cause country rock to lose integrated carrying, cause rack restoring difficulty, have a strong impact on the removal of home progress of fully mechanized coal face.
Broken for top-coal caving face coal, the problem that varied in thickness is larger, current colliery adopts Anchor Cable Net Supports mode usually, below wire lath, lay timber plate girder simultaneously, to some extent solve an above-mentioned difficult problem, but for the vulnerable area that the supporting withdrawing end, tunnel is return channel always, be designed to smear angle by comprehensive coal face is withdrawn tunnel and stope drift active workings junction from pick, form the radian seamlessly transitted, reduce mine pressure coefficient of concentration, also be conducive to haulage device transport and withdraw support, and reinforce breaking roof in conjunction with macromolecule polymeric material pre-pouring grout, anchor cable net and beam two post is adopted to strengthen roof timbering, smear angle rib and adopt bolt-mesh-anchor support, form country rock carrying overall structure, thus the control realized withdrawing termination, tunnel and smear angular region country rock.
Utility model content
Technical problem: in order to overcome deficiency of the prior art, the utility model provides a kind of productivity effect, safety and reliability good, effectively can safeguard that comprehensive coal face withdraws during the special thick irregular coal seam comprehensive coal face ending of one of angular region adjoining rock stability is smeared in termination, tunnel and smear angular region Surrounding Rock Control system.
Technical scheme: the purpose of this utility model is achieved through the following technical solutions:
One, fully mechanized coal face be advanced to distance stop adopting line 4 ~ 7m time, design single inlet well at work plane upper front part, every hole hole depth 6 ~ 8m, slip casting pipe range 3 ~ 5m, sealing of hole segment length 1.5 ~ 2m, pitch of holes is 2.4m, and aperture is 42mm.Adopt mining Bo Leiyin macromolecule polymeric material pre-pouring grout.
Two, fully mechanized coal face be advanced to stop adopting line time, tunnel and haulage way, tailgate junction will be withdrawn and be designed to smear angle, form the radian that seamlessly transits.Withdraw support and adopt forklift transport, transport curve track radius r is greater than 9000mm, and stope drift active workings width a is 5600mm, and angle radius of curvature R=r-a/2=6200 is smeared in design, and round 7000mm, smearing angle central angle is 90 °, and shape is semi arch.
Three, after fully mechanized coal face top board pre-pouring grout, along with the continuation of work plane advances, diamond mesh laid by top board, and specification is long × wide is 5 × 2m, and mesh specification is 50 × 50mm, mesh wire diameter 3.5mm, overlaps with 16# iron wire.The left-handed nothing of top board employing φ 18 × 2400mm is indulged the strong twisted steel anchor rods such as muscle and is carried out full length fastening, last row's anchor pole is apart from stopping adopting line rib distance for 700mm, tendency coal side is 75 ° with horizontal sextant angle, anchor pole is fan-shaped layout around smearing angle, smear angle inner arc anchor pole array pitch 700mm, outer arc anchor pole array pitch 900mm, spacing 800mm.Anchor cable adopts φ 15.24mm high strength, underrelaxation steel strand, and an array pitch is 1800 × 1600mm, and first row anchor cable is 450mm apart from the distance of first row anchor pole, and last row's anchor cable is apart from stopping adopting line rib distance for 1050mm, and tendency coal side is 75 ° with horizontal sextant angle.Smear angle place coal side anchor pole to adopt the left-handed nothing of φ 18 × 2400mm to indulge the strong twisted steel anchor rods such as muscle to carry out the extensible bolting, an array pitch is 900 × 1000mm, makes a call to 4 rows altogether.Topmost row's anchor pole is apart from top board 400mm, and tendency top board and horizontal sextant angle are 15 °; Bottom row's anchor pole, apart from base plate 400mm, is inclined to base plate and horizontal sextant angle 15 °.Reinforcing bar ladder trammel lattice are Φ 16, W steel band specification is 2700 × 280 × 10mm.
Four, after anchor shaft anchor cable construction, arranging that Π section steel beam coordinates a beam two post support pattern of individual prop around smearing angle, smearing angle inner arc canopy spacing 900mm.
Beneficial effect: owing to have employed such scheme, the utility model advantage compared with conventional art is as follows:
Adopt this Surrounding Rock Control system, first macromolecule polymeric material is used to carry out front pre-grouting to top board, form network skeleton, play reinforcing, the effect of filling secret room, improve the physical and mechanical property of the thick coal and rock of roof cracking, after work plane discloses, loose coal rock mass is bonded as one, not easily wall caving inbreak; Tunnel and stope drift active workings junction will be withdrawn be designed to smear angle, form the radian seamlessly transitted, reduce mine pressure coefficient of concentration, and also be conducive to haulage device transport and withdraw support; By laying wire lath, skyhook anchor cable, reinforcing bar ladder beam and steel band, and adopting П section steel beam to coordinate a beam two post strengthening supporting of individual prop, improve the globality bearing strength of country rock.The method effectively controls the deformation failure of country rock, and what ensured safety withdraws space, and reduce lumber consumption, alleviate labor strength, improve production efficiency, Social benefit and economic benefit is remarkable.
Accompanying drawing explanation
Fig. 1 is system layout schematic diagram of the present utility model.
Fig. 2 is that schematic diagram is arranged in pre-pouring grout of the present utility model boring.
Fig. 3 of the present utility modelly smears angular region supporting sectional drawing.
Fig. 4 of the present utility modelly smears angular region supporting plan view.
Marginal data: 1, tailgate; 2, angular region is smeared; 3, hydraulic support; 4, tunnel is withdrawn; 5, stop adopting line; 6, haulage way; 7, angle circular arc rib is smeared; 8, coal is pushed up; 9, inlet well; 10, wire lath; 11, anchor pole; 12, anchor cable; 13, ladder beam; 14, W steel band of model; 15, a beam two post canopy.
Detailed description of the invention
By reference to the accompanying drawings 1, Fig. 2, Fig. 3, Fig. 4 are described the concrete implementation step of the utility model:
1, as shown in Figure 1, fully mechanized coal face be advanced to distance stop adopting line (5) 4 ~ 7m time, single inlet well (9) is designed in top coal, work plane front (8), every hole hole depth 6 ~ 8m, slip casting pipe range 3 ~ 5m, sealing of hole segment length 1.5 ~ 2m, pitch of holes is 2.4m, and aperture is 42mm.Adopt mining Bo Leiyin macromolecule polymeric material pre-pouring grout.
2, fully mechanized coal face be advanced to stop adopting line (5) time, tunnel (4) and haulage way (6), tailgate (1) junction will be withdrawn and be designed to smear angle (7), form the radian seamlessly transitted.Withdraw support (3) and adopt forklift transport, transport curve track radius r is greater than 9000mm, haulage drift (6), tailgate (1) width a are 5600mm, angle radius of curvature R=r-a/2=6200 is smeared in design, round 7000mm, smearing angle central angle is 90 °, and shape is semi arch (7).
1, after fully mechanized coal face top board (8) pre-pouring grout, along with the continuation of work plane advances, diamond mesh (10) laid by top board (8), specification is long × wide is 5 × 2m, mesh specification is 50 × 50mm, mesh wire diameter 3.5mm, overlaps with 16# iron wire.The left-handed nothing of top board (8) employing φ 18 × 2400mm is indulged the strong twisted steel anchor rods (11) such as muscle and is carried out full length fastening, last row's anchor pole is apart from stopping adopting line rib (7) distance for 700mm, tendency coal side (7) and horizontal sextant angle are 75 °, anchor pole (11) is around smearing angle (7) in fan-shaped layout, smear angle (7) inner arc anchor pole (11) array pitch 700mm, outer arc anchor pole (11) array pitch 900mm, spacing 800mm.Anchor cable (12) adopts φ 15.24mm high strength, underrelaxation steel strand, between array pitch be 1800 × 1600mm, first row anchor cable (12) is 450mm apart from the distance of first row anchor pole, last row's anchor cable (12) is apart from stopping adopting line rib (5) distance for 1050mm, and tendency coal side (7) and horizontal sextant angle are 75 °.Smear angle place coal side (7) anchor pole (11) to adopt the left-handed nothing of φ 18 × 2400mm to indulge the strong twisted steel anchor rods (11) such as muscle to carry out the extensible bolting, an array pitch is 900 × 1000mm, makes a call to 4 rows altogether.Topmost row's anchor pole (11) is apart from top board 400mm, and tendency top board (8) and horizontal sextant angle are 15 °; Bottom row's anchor pole (11), apart from base plate 400mm, is inclined to base plate and horizontal sextant angle 15 °.Reinforcing bar ladder beam (13) specification is Φ 16, W steel band (14) specification is 2700 × 280 × 10mm.
2, after anchor pole (11) anchor cable (12) construction, arranging that Π section steel beam coordinates beam two post (15) support pattern of individual prop around smearing angle (7), smearing angle inner arc canopy spacing 900mm.
Claims (2)
1. smear an angular region Surrounding Rock Control system during comprehensive coal face ending, it is characterized in that having the following steps:
A, fully mechanized coal face be advanced to distance stop adopting line (5) 4 ~ 7m time, at work plane upper front part with top coal, edge, the elevation angle of 10 ° ~ 25 ° (8) construction inlet well (9), adopt macromolecule polymeric material pre-pouring grout to reinforce and push up coal (8);
B, fully mechanized coal face be advanced to stop adopting line (5) time, tunnel (4) will be withdrawn from pick to be designed to smear angle (7) with haulage way (6), tailgate (1) junction, form the radian seamlessly transitted;
C, smearing angular region (2) broken thick top coal (8) lay diamond mesh (10), skyhook (11), anchor cable (12), reinforcing bar ladder beam (13) and W steel band of model (14), and adopt beam two post (15) mode to strengthen roof timbering.
2. during a kind of comprehensive coal face ending according to claims 1, smear angular region Surrounding Rock Control system, be further characterized in that: described in smear angular region (2) top coal (8) support anchor rod (11) around smearing angle (7) in fan-shaped layout, smear angle (7) inner arc anchor pole (11) array pitch 600mm ~ 800mm, outer arc anchor pole (11) array pitch 800mm ~ 900mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520239883.1U CN204572003U (en) | 2015-04-14 | 2015-04-14 | Angular region Surrounding Rock Control system is smeared during a kind of comprehensive coal face ending |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520239883.1U CN204572003U (en) | 2015-04-14 | 2015-04-14 | Angular region Surrounding Rock Control system is smeared during a kind of comprehensive coal face ending |
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| Publication Number | Publication Date |
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| CN204572003U true CN204572003U (en) | 2015-08-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520239883.1U Expired - Fee Related CN204572003U (en) | 2015-04-14 | 2015-04-14 | Angular region Surrounding Rock Control system is smeared during a kind of comprehensive coal face ending |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105888687A (en) * | 2016-04-21 | 2016-08-24 | 西北矿冶研究院 | Method for reinforcing top pillar mining roadway rock mass |
| CN106089234A (en) * | 2016-07-15 | 2016-11-09 | 北京科技大学 | A kind of method of distance auxiliary lane multichannel Quick-return fully-mechanized mining working |
| CN110454163A (en) * | 2019-08-30 | 2019-11-15 | 陕煤集团神木红柳林矿业有限公司 | A kind of quick end of fully-mechanized mining working, which is adopted, withdraws Ji Cheongju coal technique |
-
2015
- 2015-04-14 CN CN201520239883.1U patent/CN204572003U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105888687A (en) * | 2016-04-21 | 2016-08-24 | 西北矿冶研究院 | Method for reinforcing top pillar mining roadway rock mass |
| CN105888687B (en) * | 2016-04-21 | 2019-01-25 | 西北矿冶研究院 | Method for reinforcing top pillar mining roadway rock mass |
| CN106089234A (en) * | 2016-07-15 | 2016-11-09 | 北京科技大学 | A kind of method of distance auxiliary lane multichannel Quick-return fully-mechanized mining working |
| CN106089234B (en) * | 2016-07-15 | 2018-05-25 | 北京科技大学 | A kind of method of the auxiliary lane multichannel Quick-return fully-mechanized mining working of long range |
| CN110454163A (en) * | 2019-08-30 | 2019-11-15 | 陕煤集团神木红柳林矿业有限公司 | A kind of quick end of fully-mechanized mining working, which is adopted, withdraws Ji Cheongju coal technique |
| CN110454163B (en) * | 2019-08-30 | 2024-03-26 | 陕煤集团神木红柳林矿业有限公司 | Rapid non-mining withdrawing and coal cleaning process for fully mechanized coal mining face |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150819 Termination date: 20160414 |