CN103603682B - A kind of top plate supporting method being applicable to slice drift cemented filling mining - Google Patents
A kind of top plate supporting method being applicable to slice drift cemented filling mining Download PDFInfo
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- CN103603682B CN103603682B CN201310565905.9A CN201310565905A CN103603682B CN 103603682 B CN103603682 B CN 103603682B CN 201310565905 A CN201310565905 A CN 201310565905A CN 103603682 B CN103603682 B CN 103603682B
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Abstract
The invention discloses a kind of top plate supporting method being applicable to slice drift cemented filling mining, the method comprises the following steps: the preparation of (1) short stakes; (2) processing of short stakes; (3) processing of Short bolt; (4) a roof timbering clump of piles is arranged and is installed; (5) admission passage filling.The top plate supporting method input cost of slice drift cemented filling mining of the present invention is little, technology is suitable for strong, the stable problem of sound solution slice drift cemented filling method top board, ensure that the safety of this stoping method is carried out, the present invention performs simply, reliability is strong, the length of the short stakes used is 1/10th or 1/tens of normal wood pillar, greatly reduces the consumption of mine timber, saves mining cost.
Description
Technical field
The present invention relates to a kind of mining top plate supporting method, be specifically related to a kind of top plate supporting method being applicable to slice drift cemented filling mining.
Background technology
Slice drift cemented filling method is the common mining methods of metal mine, the filling of the method many employings Roof of access road hanging tube, but due to filling slurry shrink, the problems such as the gradient of flowing automatically, a key technology difficult problem of the method is exactly that admission passage filling top board connects top problem, after many drift stopings, obturation cannot connect top and just cause top board large area unsettled, and the safety of stoping operation is just difficult to ensure.Current controlroof stability, ensure that the method that back production safety adopts mainly concentrates on two aspects, one, what increase obturation connects top rate, this method connects top rate mainly through increase obturation, make the effective roof supporting of obturation, reduce top board exposed area, safeguard roof safety, but there is shortcomings in the applicable technology that the method adopts, first this method cannot change the thickening problem of filling slurry, as long as moisture just cannot the avoiding of filling slurry concentrates, cause between obturation and top board and still there is the hole that shrinks, secondly, due to separate zone production (on to or lower to), Roof of access road shape and inclination angle change the reasonable Arrangement being unfavorable for upper and lower slice drift, have a strong impact on the normal back production of lower leaf.Finally, adopt technical method difficulty of construction comparatively large, serious restriction back production progress.Controlroof stability, ensures that the another kind of method that back production safety adopts is that adopt Rational support technology roof supporting, main technique methods has: arrange wooden prop supporting roof in top board construction bolt support and route.This method mainly avoids the effect of obturation, and rely on traditional supporting method roof supporting, but the defect that this method of top board construction bolt support exists mainly single route relies on bolt action can suspend top board (span is less) in midair, after many drift stopings, top board large area is unsettled, the height of caving arch will exceed rock-bolt length, and its suspention and the effect of reduction span were lost efficacy.Arrange in route that in this method of wooden prop supporting roof, wooden prop can play the effect of a roof supporting, but the length of wooden prop is subject to the restriction of layer height, layer height can not be too high, the most important thing is that multiple spot wooden prop will make mining cost sharply rise, and waste a large amount of timber.
Summary of the invention
The object of the invention is the shortcoming overcoming prior art existence, a kind of top plate supporting method being applicable to slice drift cemented filling mining is provided, not only perform simple, and reliability and high safety.
For realizing object of the present invention, the technical solution used in the present invention is: a kind of top plate supporting method being applicable to slice drift cemented filling mining, comprises the following steps:
(1) preparation of short stakes: select mine down-hole to commonly use mine timber, short stakes height is 0.3m ~ 0.5m;
(2) processing of short stakes: short stakes center processes the circular hole that a diameter is 20mm, and circular hole runs through whole pile body;
(3) processing of Short bolt: the diameter of Short bolt is 20mm, the processing length of Short bolt is greater than short stakes height 100mm;
(4) a roof timbering clump of piles is arranged and is installed: Short bolt step (3) obtained is through short stakes, and short stakes carries out a netted clump of piles with certain line space and column pitch and arranges fixing on Roof of access road;
(5) admission passage filling: after short stakes is deployed, carry out barricade in extracting drift entrance to route to close, Slurries cemented filling material is utilized to implement overall filling to route subsequently, the rear top board short stakes of cemented filling material condensation is filled with body and wraps up, and most of region is in triaxial stress state.。
Above-mentioned steps (4), a roof timbering clump of piles is arranged and is installed: Short bolt step (3) obtained is through short stakes, short stakes is arranged fixing with the netted clump of piles of ranks on Roof of access road, line space and column pitch are determined according to the load of roof supporting, perpendicular on route axis direction, for preventing adjacent route explosion destruction, a clump of piles is arranged can not be close to border, both sides, and short stakes is 0.5m with the distance in dual-side boundary line on top board.
The round log that the short stakes that above-mentioned steps uses is diameter 120mm-240mm.
Undertaken by above-mentioned steps, after admission passage filling completes, short stakes one end roof supporting, the height of short stakes bottom 2/3rds is filled with body and wraps up.
The present invention's advantage is compared with prior art: the present invention compares existing route wooden prop supporting method, first solving wooden prop can not the drawback of supporting height extracting drift by length restriction, secondly supporting roof wooden prop length is shortened greatly, greatly saved support cost.Compare existing arch or inclined roof panels connects topmast staying, the present invention does not destroy specification and the size of the upper and lower slice drift of extracting drift, eliminates the technology restriction of follow-up ore body drift stoping.The present invention compares existing Roof of access road pin timbering, achieve the continuous multi-point support in roof span direction, the bolt support action deprivation caused because span strengthens after avoiding same layering many drift stopings, compares anchor pole net support simultaneously and also saves cost of production.
The top plate supporting method input cost of slice drift cemented filling mining of the present invention is little, technology is suitable for strong, the stable problem of sound solution slice drift cemented filling method top board, ensure that the safety of this stoping method is carried out, the present invention performs simply, reliability is strong, the length of the short stakes used is 1/10th or 1/tens of normal wood pillar, greatly reduces the consumption of mine timber, saves mining cost.
Accompanying drawing explanation
Fig. 1 is the schematic diagram adopting roof supporting of the present invention;
Fig. 2 is the schematic diagram that a roof timbering clump of piles of the present invention is arranged;
1-short stakes; 2-top board; 3-obturation; 4-does not connect between head space; 5-Short bolt.
Detailed description of the invention
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with embodiment, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
See Fig. 1 and Fig. 2, embodiments provide a kind of top plate supporting method being applicable to slice drift cemented filling mining, this is applicable to the top plate supporting method of slice drift cemented filling mining, short stakes 1 should carry out smooth by Roof of access road to be filled before installing, the top board preparing to install short stakes position is carried out smooth process, and the method is carried out in accordance with the following steps:
(1) preparation of short stakes: select mine down-hole to commonly use mine timber, the diameter of short stakes 1, according to reference to national forestry portion mine timber specification 120mm-240mm, is mainly chosen according to the mine timber specification of the actual use in mine.As pine, short stakes 1 is the round log of diameter 200mm, and short stakes 1 is highly 0.3m ~ 0.5m, and the concrete height of short stakes 1 can not connect the height of between head space 4 according to obturation 3 and determine;
(2) processing of short stakes: short stakes 1 center processes the circular hole that a diameter is 20mm, and circular hole runs through whole pile body;
(3) processing of Short bolt: the diameter of Short bolt 5 is 20mm, the processing length of Short bolt is greater than short stakes height 100mm; Short stakes is fixed on top board by Short bolt, ensure that stowing operation timber can not come off, just the length that therefore must be greater than short stakes can play fixation, simultaneously in order to effectively save anchor rod body length, thus saving material usage, only need be greater than short stakes height 100mm.
(4) a roof timbering clump of piles is arranged and is installed: Short bolt step (3) obtained is through short stakes, the mode of skyhook is utilized to arrange fixing with the netted clump of piles of ranks by short stakes on Roof of access road, line space and column pitch are determined according to the load of roof supporting, and its computational methods are as follows:
1. the calculating of roof toad: Pt=9.81 × h × r × k, wherein Pt is roof toad kN/m
2, h represents route actual back production height, and r represents top board entity density, and k represents that work plane pillar should the superincumbent stratum thickness of supporting and the ratio of mining height, and be generally 4-8, the actual conditions according to top board are chosen.
2. the calculating of single short stakes actual support ability: Rt=kg × kb × R × S, wherein Rt is the enabling capabilities unit of single short stakes: kN/ root, and kg is short stakes service factor, getting 0.9, kb is short stakes nonuniformity coefficient, gets 0.8, R is short stakes axial compression strength, usually gets 12N/mm
2, S is the sectional area of short stakes, determines according to the specification in (1).
3. short stakes supporting roof density calculation: n=Pt/Rt, wherein n is support density, unit: root/mm
2), the final exposed area according to 3. result of calculation and in conjunction with top board sets rational line space and column pitch.Because the timber being close to boundary line is very easily damaged in the ore body back production explosion of route both sides, therefore perpendicular on route axis direction, a clump of piles is arranged can not be close to border, both sides, and short stakes is 0.5m with the distance in dual-side boundary line on top board;
(5) admission passage filling: after short stakes deploys, carry out barricade in extracting drift entrance to route to close, utilize Slurries cemented filling material (cement+tailings) to implement overall filling to route subsequently, filling slurry solidify rear top board short stakes wrap up by cemented fill 3.Most areas is in triaxial stress state.
Undertaken by above-mentioned steps, after admission passage filling completes, short stakes one end roof supporting, the height of short stakes bottom 2/3rds is filled with body and wraps up, exposed parts is the space not connecing top, makes the main pile body of short stakes be in triaxial stress state like this, increases the anti-pressure ability of short stakes.Under the clump of piles supporting adopting this kind of method top board after many drift stopings to be in obturation and obturation, large area does not expose, and has ensured back production safety.
The top plate supporting method input cost of slice drift cemented filling mining of the present invention is little, technology is suitable for strong, the stable problem of sound solution slice drift cemented filling method top board, ensure that the safety of this stoping method is carried out, the present invention performs simply, reliability is strong, the length of the short stakes used is 1/10th or 1/tens of normal wood pillar, greatly reduces the consumption of mine timber, saves mining cost.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (4)
1. be applicable to a top plate supporting method for slice drift cemented filling mining, it is characterized in that: the method comprises the following steps:
(1) preparation of short stakes: select mine down-hole to commonly use mine timber, short stakes height is 0.3m ~ 0.5m;
(2) processing of short stakes: short stakes center processes the circular hole that a diameter is 20mm, and circular hole runs through whole pile body;
(3) processing of Short bolt: the diameter of Short bolt is 20mm, the processing length of Short bolt is greater than short stakes height 100mm;
(4) a roof timbering clump of piles is arranged and is installed: Short bolt step (3) obtained is through short stakes, and short stakes carries out a netted clump of piles with certain line space and column pitch and arranges fixing on Roof of access road;
(5) admission passage filling: after short stakes deploys, carry out barricade in extracting drift entrance to route to close, utilize Slurries cemented filling material to implement overall filling to route subsequently, cemented filling material solidifies rear top board short stakes and is filled with body and wraps up.
2. a kind of top plate supporting method being applicable to slice drift cemented filling mining according to claim 1, it is characterized in that: step (4) roof timbering clump of piles is arranged and installed: Short bolt step (3) obtained is through short stakes, short stakes is arranged fixing with the netted clump of piles of ranks on Roof of access road, line space and column pitch are according to the load of roof supporting, the exposed area of single short stakes actual support ability and top board is determined, perpendicular on route axis direction, a clump of piles is arranged can not be close to dual-side boundary line, short stakes is 0.5m with the distance in dual-side boundary line on top board.
3. a kind of top plate supporting method being applicable to slice drift cemented filling mining according to claim 1, is characterized in that: the round log that the short stakes of use is diameter 120mm-240mm.
4. a kind of top plate supporting method being applicable to slice drift cemented filling mining according to claim 1, it is characterized in that: after admission passage filling completes, short stakes one end roof supporting, the height of short stakes bottom 2/3rds is filled with body and wraps up.
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| CN201310565905.9A CN103603682B (en) | 2013-11-14 | 2013-11-14 | A kind of top plate supporting method being applicable to slice drift cemented filling mining |
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| CN201310565905.9A CN103603682B (en) | 2013-11-14 | 2013-11-14 | A kind of top plate supporting method being applicable to slice drift cemented filling mining |
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| CN103603682B true CN103603682B (en) | 2015-11-25 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104373125B (en) * | 2014-09-11 | 2016-05-25 | 长沙矿山研究院有限责任公司 | In two steps to the packed method of mining by the way of filling of high stratification |
| CN105370286A (en) * | 2015-12-12 | 2016-03-02 | 马钢(集团)控股有限公司 | Drift and fill type open stope subsequent backfilling mining method |
| CN108621857B (en) * | 2018-04-20 | 2023-06-23 | 西南交通大学 | Suspension type magnetic levitation vehicle and track system |
| CN109131369B (en) * | 2018-07-02 | 2023-08-29 | 西南交通大学 | Suspension type high-temperature superconductive magnetic levitation traffic system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2132248A (en) * | 1982-11-19 | 1984-07-04 | H L & H Timber Products | Timber mine prop |
| EP0142280A2 (en) * | 1983-10-14 | 1985-05-22 | Bestobell South Africa Limited | Elongate mine support |
| EA001183B1 (en) * | 2000-04-06 | 2000-10-30 | Юн, Руслан Борисович | Method of working gentle ore deposits |
| CN1546839A (en) * | 2003-12-11 | 2004-11-17 | 云南驰宏锌锗股份有限公司 | Ladder type mining method using united pillars to support roof and partition stope |
| CN201568082U (en) * | 2009-12-24 | 2010-09-01 | 攀枝花煤业（集团）有限责任公司 | Roof-contacted structure of gob-side entry retaining filling wall |
| CN103388488A (en) * | 2013-08-21 | 2013-11-13 | 大同煤矿集团有限责任公司 | Thin seam gob-side entry retaining filling method |
-
2013
- 2013-11-14 CN CN201310565905.9A patent/CN103603682B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2132248A (en) * | 1982-11-19 | 1984-07-04 | H L & H Timber Products | Timber mine prop |
| EP0142280A2 (en) * | 1983-10-14 | 1985-05-22 | Bestobell South Africa Limited | Elongate mine support |
| EA001183B1 (en) * | 2000-04-06 | 2000-10-30 | Юн, Руслан Борисович | Method of working gentle ore deposits |
| CN1546839A (en) * | 2003-12-11 | 2004-11-17 | 云南驰宏锌锗股份有限公司 | Ladder type mining method using united pillars to support roof and partition stope |
| CN201568082U (en) * | 2009-12-24 | 2010-09-01 | 攀枝花煤业（集团）有限责任公司 | Roof-contacted structure of gob-side entry retaining filling wall |
| CN103388488A (en) * | 2013-08-21 | 2013-11-13 | 大同煤矿集团有限责任公司 | Thin seam gob-side entry retaining filling method |
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Inventor after: Wang Xiaojun Inventor after: Dong Shihua Inventor after: Fang Shengyong Inventor after: Feng Xiao Inventor after: Zhao Kui Inventor after: Zhuo Yulong Inventor before: Wang Xiaojun Inventor before: Feng Xiao Inventor before: Zhao Kui Inventor before: Zhuo Yulong |
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Effective date of registration: 20151102 Address after: 156 No. 341000 Jiangxi province Zhanggong District of Ganzhou City, Hakka Avenue Applicant after: Jiangxi University of Science and Technology Applicant after: Tongling nonferrous metals Lantau Peak Mining Co., Ltd. Address before: 341000 Hongqi Road, Jiangxi, Ganzhou, No. 86 Applicant before: Jiangxi University of Science and Technology |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
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Granted publication date: 20151125 Termination date: 20191114 |