CN100489272C - Top plate control method of Wangeviry coal mining region - Google Patents
Top plate control method of Wangeviry coal mining region Download PDFInfo
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- CN100489272C CN100489272C CNB2004100584930A CN200410058493A CN100489272C CN 100489272 C CN100489272 C CN 100489272C CN B2004100584930 A CNB2004100584930 A CN B2004100584930A CN 200410058493 A CN200410058493 A CN 200410058493A CN 100489272 C CN100489272 C CN 100489272C
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Abstract
This invention relates to a roof controlling method with liner mount in coal mining district, which comprises the following steps: a) elevating the mount to the setting load when the linear mount reaches to the branch entry head; b) opening the side guard plate, adjusting the length of the proof gangue link according to the height of the mount; c) retracting the side guard plate when the liner mount forward or backward, elevating the coal board to a proper height. By said invention, it can control roof effectively and decrease the roof-fall accident.
Description
Technical field
The present invention relates to the Roof Control method of a kind of Wangeviry bank, relate in particular to the Roof Control method of the Wangeviry bank that utilizes linear support.
Background technology
The coal resources of China are very abundant.The Wangeviry coal-mining method is a kind of a kind of efficient coal-mining method of utilizing the continuous miner group to carry out short-walling, but existing Roof Control method can not satisfy the high speed exploitation needs of the coal-mining method of Wangeviry far away.Top board is provided with the improper top board that causes easily and comes off, and roof fall accident takes place.
The main cause of roof fall has:
By the compound roof structure that mud stone, siltstone, multilayer seam are formed, bedding, joint, crack and sliding surface are grown in the top board, and top board is weak moisture in addition, and the rock hydrolysis is serious, and intensity reduces, and rock is along structural plane and the inbreak of seam place.
The length of anchor pole is during less than the thickness in coal seam, anchor rod anchored section may anchor on seam, anchor pole can not play the suspention effect, its support action is little.
Span length is too big, has accelerated the sinking of top board.
Roadway support is too late, or anchor pole is in time not fastening or advance of working cycle is excessive, causes the sky top area excessive, causes the roof delamination inbreak.
Therefore, need a kind of Roof Control method of optimization, prevent the generation of roof fall.
Summary of the invention
In order better the top board of Wangeviry coal-mining method to be controlled, the linear support of utilization that the present invention proposes a kind of optimization is to the Roof Control method.
Comprise following content:
(1) coal-winning machine in time moves linear support after having adopted a cutter, and coal-winning machine and the not action simultaneously of linear support; Linear support rises to certain setting load with this support, and the rear flank plate is opened after arriving offset area head, and prevents the length of cash chain according to this supporting height adjustment;
(2) linear support advances or regains side guard board when retreating, and lifts coal-ploughing board to suitable height.
Preferably, step (2) is described highly can be the height that coal-ploughing board does not shovel the end suitably.
Preferably, linear support is adjusted to the setting load of this support below the maximum value 16MP under normal supporting state.
Preferably, linear support moves forward when falling post in offset, reduces to the position that makes this support not bump anchor pole.
Preferably, setting prop, when falling post before and after post carry out simultaneously.
Preferably, when linear support breaks down maintenance, set wooden prop temporary lining.
The present invention adopts the Roof Control method of the linear support of optimization, can control top board effectively, reduce the generation of roof fall accident, guarantees that the safety of producing carries out.
The specific embodiment
The embodiment of the invention is the Roof Control system that is used for the Wangeviry bank.
After linear support arrives offset area head, this support setting load is risen to 5-8MP, and the rear flank plate is opened, and prevent the length of cash chain according to this supporting height adjustment.
When linear support advances or retreats, regain side guard board, and lift coal-ploughing board to suitably highly, in case coal-ploughing board produces the end.
Linear support is transferred to the setting load of this support and is lower than 16MP under normal supporting state, in case the top board absciss layer of crushing is dropped.
Linear support move forward in offset and reduces to this support when falling post and do not bump anchor pole, in case the anchor pole extension is bad, cause the large tracts of land roof fall.
Coal-winning machine has been adopted behind the cutter traversing carriage in time, and coal-winning machine and linear support do not move simultaneously when moving frame, with tamper-proof top board.
Setting prop, when falling post before and after post carry out simultaneously, can avoid lifting support repeatedly like this, protected top board.
When linear support breaks down maintenance, set wooden prop temporary lining top board, guarantee maintainer's safety.
Coal-face must be by the regulation immediate support of operating regulation, forbids the operation of sky top.All supports must set up firmly, and anti-down post measure is arranged.Forbid erection bracket on float coal or floating cash.When using the friction-type metal mainstay, must use hydraulic lifting unit to set up, setting load must not be less than 50kN; The setting load of hydraulic prop, post directly be 100mm must not be less than 90kN, post directly be 80mm must not be less than 60kN.Forbid in zone, control top, to pluck post in advance.The pillar that knock over or damage, lost efficacy must recover or change immediately.When moving conveyor head, tail need be removed near support, must the good falsework of first frame.
Coal-face meet roof and floor soft or broken, cross tomography, cross old empty, when crossing coal column or roof fall district and the exploitation of holder false roof, must formulate safety measure.
The crawler travel cribbing can be with to press and move in reclaiming the coal column process, immediate support top board, the safety of assurance stope.The crawler travel cribbing can also in time be cut the top to top board, makes the timely inbreak in goaf.Adopt when work plane is joined travelling hydraulic support and do not stay the coal skin between cave; When work plane was not equipped with caterpillar track travelling hydraulic support, Pillar Recovery should be taked to stay and establish rib coal skin and come roof supporting, and coal-winning machine is whenever adopted a cave, adopts the coal skin that stays 0.5～1.0m between cave.Large tracts of land is not striden the top board that falls will regularly force caving and stay and establish security personnel's isolated coal pillar.
In addition, can take following measure to strengthen roof control:
At first, getting working face is before going into operation, to be guiding theory with " safety regulations in coal mine ", formulate strict, detailed operating regulation, will be in the rules at the concrete geological conditions of work plane, formulate the detailed face of adopting geology manual and perfect roof control measure, particularly to make strict careful regulation to face timbering quality, specification, and to make corresponding replenish and perfect along with the continuous variation of the continuous propelling of work plane and geological conditions, and accomplish that training puts in place, implements the individual.Operating regulation must can go into operation after relevant leader examines and implements in relevant personnel's (comprising safety supervision person, technician) comprehensively, no operatton rules or imperfection and do not implement firmly comprehensively and mustn't go into operation.
Secondly, getting working face at first will be forbidden to operate against regulations in strict accordance with " safety regulations in coal mine " regulation construction operation, adheres to " three not production principles " reinforcement field control.Secondly, the supporting quality specification of work plane and mode will require to carry out in strict accordance with rules, underproofly firmly make its rectification that stops production, run into the broken especially place of the special location of geological conditions such as tomography, fold, compressive zone and top board and will take special and safe support pattern.Its three, the face of adopting will be adhered to by the timely prop drawing caving of rules requirement, the inaccurate operation of prop drawing caving when it's too late.They are four years old, during the ommatidium opening: should be earlier before the opening danger look into before and after the opening part in 5.0 meters the intact situation of fortune lane frame and the situation of top board and opening nation, all have support rotten or fracture should first repairing and reinforcement, and opening part must set up again to be lifted canopy and prop up control, fore shaft supporting in time behind the opening; The measure that firm opening should be taked few powder charge, put little big gun is to avoid causing the vibration limits to the opening part country rock; , coal seam thickness more complete to country rock less than 1.2 meters, do not need the The Small Well of shed shoring, 3.0 meters insied widths of opening can reach 2.0 meters so that the pedestrian, little well head should be provided with staircase.
Once more, according to the coal petrography feature, the reasonable Arrangement borehole, the control explosive payload is avoided causing roof fall accident owing to blowing out.
At last, implement the work of tapping of getting working face conscientiously, hacking shed tunnel adheres to using advance support, forbids the operation of sky top, eliminates roof accident.
The Roof Control method of the Wangeviry bank of present embodiment can be controlled top board effectively, reduce the generation of roof fall accident, guarantees that the safety of production is carried out.
Claims (7)
1. a Wangeviry bank utilizes the Roof Control method of linear support, it is characterized in that, may further comprise the steps:
(1) coal-winning machine in time moves linear support after having adopted a cutter, and coal-winning machine and the not action simultaneously of linear support; After linear support arrives offset area head, this support is risen to setting load, and side guard board is opened, and prevent the length of cash chain according to the supporting height adjustment;
(2) when linear support advances or retreats, regain side guard board, and lift coal-ploughing board to suitable height.
2. Roof Control method according to claim 1 is characterized in that: when linear support in normal supporting state following time, the setting load of adjusting this support is below 16MP.
3. Roof Control method according to claim 1 is characterized in that: described setting load 5-8MP.
4. Roof Control method according to claim 1 is characterized in that: the described suitable height of step (2) is the height that coal-ploughing board does not shovel the end.
5. Roof Control method according to claim 1 is characterized in that: linear support moves forward when falling post in offset, reduces to the position that makes this support not bump anchor pole.
6. Roof Control method according to claim 1 is characterized in that: setting prop, when falling post before and after post carry out simultaneously.
7. Roof Control method according to claim 1 is characterized in that: when linear support breaks down maintenance, set wooden prop temporary lining.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100584930A CN100489272C (en) | 2004-08-19 | 2004-08-19 | Top plate control method of Wangeviry coal mining region |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100584930A CN100489272C (en) | 2004-08-19 | 2004-08-19 | Top plate control method of Wangeviry coal mining region |
Publications (2)
| Publication Number | Publication Date |
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| CN1737335A CN1737335A (en) | 2006-02-22 |
| CN100489272C true CN100489272C (en) | 2009-05-20 |
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| CNB2004100584930A Active CN100489272C (en) | 2004-08-19 | 2004-08-19 | Top plate control method of Wangeviry coal mining region |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103696771B (en) * | 2013-12-18 | 2015-06-10 | 中国矿业大学 | Skip-mining type wangeviry stope branch roadway filling and coal mining method |
| US10689952B2 (en) | 2014-12-04 | 2020-06-23 | M-I L.L.C. | System and method removal of contaminants from drill cuttings |
| CN112414290A (en) * | 2020-11-16 | 2021-02-26 | 中国铝业股份有限公司 | Method for detecting thickness of direct roof of aluminum ore by using geological radar |
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2004
- 2004-08-19 CN CNB2004100584930A patent/CN100489272C/en active Active
Non-Patent Citations (8)
| Title |
|---|
| 旺格维利（Wongawilli）采煤法在神东矿区的应用. 鹿志发，孙建明，潘金，贺安民.煤炭科学技术，第30卷. 2002 |
| 旺格维利（Wongawilli）采煤法在神东矿区的应用. 鹿志发，孙建明，潘金，贺安民.煤炭科学技术，第30卷. 2002 * |
| 旺格维利采煤工作面顶板管理的探索. 郭永文.煤炭工程，第5期. 2004 |
| 旺格维利采煤工作面顶板管理的探索. 郭永文.煤炭工程，第5期. 2004 * |
| 旺格维利采煤法. 宫全红.同煤科技，第2期. 2004 |
| 旺格维利采煤法. 宫全红.同煤科技，第2期. 2004 * |
| 旺采面掘进中的顶板控制与巷道断面优化. 苏金元，唐青松，陈重，周爱平.中国煤炭，第28卷第11期. 2002 |
| 旺采面掘进中的顶板控制与巷道断面优化. 苏金元，唐青松，陈重，周爱平.中国煤炭，第28卷第11期. 2002 * |
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| CN1737335A (en) | 2006-02-22 |
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