CN104088641B - Longwell descending slicing spoil vacation top coal-mining method - Google Patents
Longwell descending slicing spoil vacation top coal-mining method Download PDFInfo
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Abstract
The present invention relates to a kind of coal-mining method, it is specifically related to a kind of longwell descending slicing spoil vacation top coal-mining method, it is false top with dirt band that technical problem to be solved there is provided a kind of, the longwell descending slicing spoil vacation top coal-mining method simple, convenient, raw coal percentage of shale content is low.The technical scheme used is to use to compose to deposit stable dirt band as vacation top, decrease the mixed volume of spoil in raw coal, realize lasting exploit, and eliminate wire netting or the program of plastic wire of laying in separate zone production, alleviate the labor intensity of workman, decrease the consumption of material simultaneously, improve the overall efficiency of coal mining, be widely used in the exploitation of coal.
Description
Technical field
The present invention relates to a kind of coal-mining method, be specifically related to a kind of longwell descending slicing spoil vacation top coal-mining method.
Background technology
Coal seam can be divided into two classes, a class to be the simple coal seam without dirt band by structure, and another kind of is the complicated seam containing dirt band.
Dirt band in complicated seam mostly is argillaceous rocks, clay rock, Weihe in Gaoling, charcoal mudrock or sandstone.For the high seam relatively big containing thickness, stabilization clamp rock layers is deposited in tax, during seam mining, dirt band is the most easily mixed in the middle of raw coal, not only adds the percentage of shale content of raw coal, but also adds the washing amount of coal, causes production cost to be greatly improved.
At present, China generally uses slice longwall method for the exploitation of complicated seam, and slice longwall method is usually and manually coal seam is divided into multiple layering, then carries out layer-by-layer mining.When exploiting higher slice, in order to avoid when adopting next layer, surface pressure is excessive, usually need to lay wire netting or plastic wire as Man-made False, but owing to the laying of Man-made False is extremely complex, the shortcomings such as production process is many, labor strength is big, production cost is high, overall efficiency is low, bring a lot of trouble to the exploitation of coal.
Summary of the invention
It is false top with dirt band that the present invention overcomes the deficiency that prior art exists, technical problem to be solved to there is provided a kind of, the longwell descending slicing spoil vacation top coal-mining method simple, convenient, raw coal percentage of shale content is low.
For solving above-mentioned technical problem, the technical solution adopted in the present invention is: longwell descending slicing spoil vacation top coal-mining method, follows the steps below:
The first step, haulage drift and return aircourse is dug respectively in the both sides of the first working face of coal seam, and cut eye by haulage drift to return aircourse along the first working face of coal seam digging, what coal-winning machine, scrapper conveyor and hydraulic support were arranged on the first coal seam cuts ophthalmic, belt feeder and elevating conveyor are arranged in haulage drift, then carrying out pusher coal mining, the coal under coal-winning machine is adopted transports ground through scrapper conveyor, elevating conveyor and belt feeder；
Second step, during the first coal seam work constantly advances, progressively recall the hydraulic support in goaf, first seam roof is freely caving, the hail of pebbles that first roof is caving is on the dirt band at the second top, coal seam, and the rubble that the first roof is caving and dirt band are cemented to mat again；
3rd step, recall the coal-winning machine of the first working face of coal seam, scrapper conveyor, belt feeder and elevating conveyor, haulage drift and return aircourse is dug the most respectively in the both sides of the second working face of coal seam, eye is cut along the second working face of coal seam digging equally by haulage drift to return aircourse, again by coal-winning machine, what scrapper conveyor and hydraulic support were arranged on the second coal seam cuts ophthalmic, belt feeder and elevating conveyor are arranged in haulage drift, rubble that hydraulic support is caving using the first coal seam and the mat that dirt band is cemented to carry out supporting as the second roof, carry out pusher coal mining the most again, coal-winning machine adopt under coal through scrapper conveyor, elevating conveyor and belt feeder transport ground, until coal seam has been adopted.
After described first roof is caving, it is caving water filling or injection mud in the rubble got off to the first roof.
The had the beneficial effect that present invention of the present invention passes through to use tax to deposit stable dirt band as vacation top, decrease the mixed volume of spoil in raw coal, realize lasting exploit, and eliminate wire netting or the program of plastic wire of laying in separate zone production, alleviate the labor intensity of workman, decrease the consumption of material simultaneously, improve the overall efficiency of coal mining.
Accompanying drawing explanation
The invention will be further described below in conjunction with the accompanying drawings.
Fig. 1 is the structural representation of the first working face of coal seam in the present invention.
Fig. 2 is the structural representation of the second working face of coal seam in the present invention.
Fig. 3 is working face equipment scheme of installation in the present invention.
In figure: 1 is the first roof, 2 is the first coal seam, and 3 is dirt band, and 4 is the second coal seam, 5 is hydraulic support, and 6 is coal-winning machine, and 7 is the rubble that the first roof is caving, and 8 is scrapper conveyor, 9 is elevating conveyor, and 10 is belt feeder, and 11 is haulage drift, and 12 is return aircourse.
Detailed description of the invention
As shown in Figure 1, Figure 2, Figure 3 shows, longwell descending slicing spoil vacation top coal-mining method, follow the steps below:
The first step, haulage drift 11 and return aircourse 12 is dug respectively in the both sides of the first coal seam 1 work surface, and cut eye by haulage drift 11 to return aircourse 12 along the first coal seam 1 work surface digging, what coal-winning machine 6, scrapper conveyor 8 and hydraulic support 5 were arranged on the first coal seam 1 cuts ophthalmic, belt feeder 10 and elevating conveyor 9 are arranged in haulage drift 11, then carrying out pusher coal mining, the coal under coal-winning machine 6 is adopted transports to ground through scrapper conveyor 8, elevating conveyor 9 and belt feeder 10；
Second step, during the first coal seam 1 works and constantly advances, progressively recall the hydraulic support 5 in goaf, the top board in the first coal seam 1 is freely caving, the rubble 7 that first roof is caving is scattering on the dirt band 3 at the second top, coal seam, along with the continuous propelling of work surface, the rubble 7 that the first roof is caving is the most cementing with dirt band 3 under the pressure effect of overlying rock becomes the mat with some strength and stability, is used as the false top in the second coal seam；
3rd step, recall the coal-winning machine 6 of the first coal seam 1 work surface, scrapper conveyor 8, belt feeder 10 and elevating conveyor 9, haulage drift 11 and return aircourse 12 is dug the most respectively in the both sides of the second coal seam 4 work surface, eye is cut along 12 second coal seam 4 work surface diggings equally by haulage drift 11 to return aircourse, again by coal-winning machine 6, what scrapper conveyor 8 and hydraulic support 5 were arranged on the second coal seam 4 cuts ophthalmic, belt feeder 10 and elevating conveyor 9 are arranged in haulage drift 11, rubble 7 that hydraulic support 5 is caving with the first coal seam and the mat that dirt band 3 is cemented to are that the second roof carries out supporting, carry out pusher coal mining the most again, coal-winning machine 6 adopt under coal through scrapper conveyor 8, elevating conveyor 9 and belt feeder 10 transport are to ground, until coal seam has been adopted.
After described first roof is caving, in order to promote the formation on the second vacation top, coal seam, when higher slice is exploited, water filling or injection mud in the rubble 7 got off can be caving to goaf the first roof, guarantee the stability that the second vacation top, coal seam is formed.
Claims (1)
1. longwell descending slicing spoil vacation top coal-mining method, it is characterised in that: follow the steps below:
The first step, haulage drift and return aircourse is dug respectively in the both sides of the first working face of coal seam, and cut eye by haulage drift to return aircourse along the first working face of coal seam digging, what coal-winning machine, scrapper conveyor and hydraulic support were arranged on the first coal seam cuts ophthalmic, belt feeder and elevating conveyor are arranged in haulage drift, then carrying out pusher coal mining, the coal under coal-winning machine is adopted transports ground through scrapper conveyor, elevating conveyor and belt feeder；
Second step, during the first working face of coal seam constantly advances, progressively recall the hydraulic support in goaf, first seam roof is freely caving, the hail of pebbles that first roof is caving is on the dirt band at the second top, coal seam, and the rubble that the first roof is caving and dirt band are cemented to mat again；
3rd step, recall the coal-winning machine of the first working face of coal seam, scrapper conveyor, belt feeder and elevating conveyor, haulage drift and return aircourse is dug the most respectively in the both sides of the second working face of coal seam, eye is cut along the second working face of coal seam digging equally by haulage drift to return aircourse, again by coal-winning machine, what scrapper conveyor and hydraulic support were arranged on the second coal seam cuts ophthalmic, belt feeder and elevating conveyor are arranged in haulage drift, rubble that hydraulic support is caving with the first coal seam and the mat that dirt band is cemented to are that the second roof carries out supporting, carry out pusher coal mining the most again, coal-winning machine adopt under coal through scrapper conveyor, elevating conveyor and belt feeder transport ground, until coal seam has been adopted；After described first roof is caving, it is caving water filling or injection mud in the rubble got off to the first roof.
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| CN104088641B true CN104088641B (en) | 2016-08-24 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105003269B (en) * | 2015-08-11 | 2017-03-15 | 贵州理工学院 | A kind of recovery method of thick sandstone coal wall |
| CN106194187A (en) * | 2016-08-04 | 2016-12-07 | 安徽理工大学 | A kind of coal winning technology of special thick weak seam separate zone production |
| CN110630263B (en) * | 2018-08-29 | 2021-04-27 | 中国矿业大学 | Layered mining method for huge thick coal seam with middle gangue layer |
| CN109869152B (en) * | 2019-04-12 | 2021-06-22 | 河南理工大学 | Mining method for reserved roadway of coal and gas outburst coal seam |
| CN114370273B (en) * | 2022-03-22 | 2022-05-31 | 中国矿业大学(北京) | Method for co-mining resources without pillar setting and roadway driving |
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| CN102587915A (en) * | 2012-03-21 | 2012-07-18 | 西安建筑科技大学 | Induction caving mining method under artificial false roof |
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| CN2202183Y (en) * | 1994-09-30 | 1995-06-28 | 汤向东 | Flame-retarded and antistatic plastic net for coal mine |
| CN2642995Y (en) * | 2003-08-07 | 2004-09-22 | 高升 | High-strength type plastic flat net for coal mine down-hole support |
| RU2277171C1 (en) * | 2004-11-09 | 2006-05-27 | ГНУ "Центр информационно-аналитического обеспечения системы дистанционного образования Министерства образования Российской Федерации" (ЦИАН) | Method of underground solid mineral deposit mining |
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Address after: 030001 No. 18 Youth Road, Yingze District, Taiyuan City, Shanxi Province Patentee after: Taiyuan Design and Research Institute Group Co., Ltd. of Coal Industry Address before: 030001 No. 18 Youth Road, Taiyuan City, Shanxi Province Patentee before: TAIYUAN DESIGN RESEARCH INSTITUTE FOR COAL INDUSTRY |
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