CN101915101B - Method of mining coal from heavy pitch thick coal seam - Google Patents

Method of mining coal from heavy pitch thick coal seam Download PDF

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Publication number
CN101915101B
CN101915101B CN201010258015XA CN201010258015A CN101915101B CN 101915101 B CN101915101 B CN 101915101B CN 201010258015X A CN201010258015X A CN 201010258015XA CN 201010258015 A CN201010258015 A CN 201010258015A CN 101915101 B CN101915101 B CN 101915101B
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coal
mining
caving
roof
shed
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CN101915101A (en
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樊运策
任勇
徐刚
毛德兵
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Tiandi Science and Technology Co Ltd
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Tiandi Science and Technology Co Ltd
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Abstract

The invention provides a method for mining coal from a heavy pitch thick coal seam in a horizontal and segmental short wall manner. The method comprises the following steps of: supporting and caving coal by using a top coal caving hydraulic support in a work surface; drilling holes, blasting coal, and conveying the coal with a scraper conveyor; performing gob-side entry retaining by using a prefabricated metal shed or a plastic bucket. The coal-mining method can realize mechanical mining of the heavy pitch thick coal seam, greatly improves yield and efficiency of the working face and ensures safe production.

Description

A kind of method of mining coal from heavy pitch thick coal seam
Technical field
The present invention relates to the coal-mining method of steep-inclined thick coal seam, especially a kind of horizontal fragmentation moves towards the short-walling method.
Background technology
The coal-mining method that steep-inclined thick coal seam is commonly used is: warehouse style coal-mining method, lane pillar coal caving mining method, top slicing system of sublevel caving.Wherein, warehouse style coal-mining method forbidden by country order, and lane pillar coal caving mining method is because of carrying out independently exhaust ventilation and not having two outlets to adopt.Top slicing system of sublevel caving is also thin partially because of coal seam thickness, can't on same level, arrange two tunnels and can't adopt.At present still there is not a kind of good method effectively to exploit.
Summary of the invention
The invention provides the coal-mining method that a kind of horizontal fragmentation moves towards the short-walling steep-inclined thick coal seam, be called " horizontal fragmentation gob side entry retaining coal caving mining method ".This method adopts the caving roof coal hydraulic support supporting and puts coal in work plane, the coal breakage of drilling and blasting, and drag conveyor fortune coal adopts prefabricated metal shed or plastic barrel to carry out gob-side entry retaining support.Realize the mechanical mining of steep-inclined thick coal seam with this.
Coal-mining method provided by the invention can realize the mechanical mining of steep-inclined thick coal seam, and the output and the efficient of work plane improve greatly, and safety in production is guaranteed.
Move towards the mechanical mining of shortwall Caving Coal for what realize steep-inclined thick coal seam, primary problem is the independent ventilation system that realizes work plane and possess two emergency exits.The present invention adopts along a transportation of seat earth pick lane, during back production simultaneously, keeps second emergency exit that a return airway ventilates and forms work plane along roof, to realize that horizontal fragmentation moves towards the shortwall top coal caving.
The technical solution adopted for the present invention to solve the technical problems is: at first be not less than 7m along seat earth pick section 2The transportation lane, until the return air of the section boundary coal column border of going up a hill, cut eye to the seat earth pick along the coal column border of going up a hill, and with return air perforations of going up a hill, formation ventilation system.Cutting eye can be vertical roof and floor, also can be angled with bearing.According to the length of work plane, arrange the caving roof coal hydraulic support of some.Install drag conveyor at the support rear portion, this drag conveyor is both as the Caving Coal conveyer, and the frame that moves as caving roof coal hydraulic support supports again.In the middle of these supports, it is special that two supports are arranged: one is leaned on the termination of base plate at work plane, and coal mechanism is put by what caving shield and plate were formed in its side; One it has the side guard beam in the tailentry termination, so that along with the gob side entry retaining shed is constructed in the propelling of work plane under the side guard beam.The gob side entry retaining shed is made up of i iron and anchor pole, and the bolt through anchor pole is fixed on shed on the top board, on shed, is covered with wire lath or plastic wire, and online face is covered with plastic sheeting, in case leak out.
The invention has the beneficial effects as follows, move towards shortwall Caving Coal mode with gob side entry retaining and realize the steep-inclined thick coal seam mining mechanization, solved the coal-mining method problem of difficult mining coal seam, improve the per unit area yield and the efficient of work plane, greatly reduce the drivage ratio of mining roadway.Guaranteed the safety and high efficiency of steep-inclined thick coal seam.
Description of drawings
Fig. 1 is the plan view of work plane of the present invention;
Fig. 2 is the A-A sectional drawing of Fig. 1;
Fig. 3 is the B-B sectional drawing of Fig. 2.
Wherein, 1 roof, 2 seat earths, 3 headentries, 4 exploiting field return air are gone up a hill, 5 coal columns of going up a hill; 6 tailentries, 7 caving roof coal hydraulic supports, 8 transportation heading head caving roof coal hydraulic supports, 9 return air termination caving roof coal hydraulic supports, 10 work plane drag conveyors, 11 crossheading drag conveyors; 12 gob side entry retaining sheds, 13 anchor poles, 14 advance of the face directions, 15 scraper box machines, 16 goafs; 17 wire laths or plastic wire, 18 plastic sheetings, 19 top coals, 20 working face walls, 21 pass jack
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is further specified.
Among Fig. 1, Fig. 2 and Fig. 3, transportation lane 3 is arranged in the stage bottom with return airway 6, forms work plane between them, and work plane is " Z " shape and arranges that level interval can be between 8~12m, and the mining height of work plane should be not less than 2.5m.Work plane begins from coal column 5 borders of going up a hill to advance.Caving roof coal hydraulic support 7 is arranged along work plane with two ends caving roof coal hydraulic support 8,9, respectively one of two ends caving roof coal hydraulic support 8,9, and the quantity of caving roof coal hydraulic support 7 is by the length decision of work plane.Because the length of work plane is short, so adopt the coal breakage of drilling and blasting, advance of working cycle can be between 0.5~1.2m.The coal that falls, with scraper box machine 15 with pack into 11 li of crossheading drag conveyors of coal.After the support reach, the top coal collapses and, and puts into work plane drag conveyor 10 from caving roof coal hydraulic support 7,8,9 rear portions and transports.
Caving roof coal hydraulic support 7 is installed behind working face wall 20, and work plane drag conveyor 10 is installed the rear portion in caving roof coal hydraulic support, is connected with sublevel caving hydrau lic support 7 with passing jack 21.Passing jack 21 is used for drawing forward and moves drag conveyor 10 and pass caving roof coal hydraulic support 7,8,9.Top coal 19 collapses after the support reach, puts into drag conveyor 10 through the coal discharge outlet of sublevel caving hydrau lic support and transports.After the top coal has been prevented, form goaf 16.
Along with the propelling of work plane,, construct gob side entry retaining shed 6 in the roof side of work plane.The spacing of shed is different according to the stability of roof, changes between 0.5~1.0m, and is tight with pull bar or strut stay bolt between the shed.On shed, be covered with wire lath or plastic wire 17, online face is covered with plastic sheeting 18, in case leak out.

Claims (4)

1. the coal-mining method of a steep-inclined thick coal seam is characterized in that, adopts following production practice:
(1) is not less than 7m along seat earth pick section 2Transportation lane (3), until the return air of the section boundary coal column border of going up a hill, cut eye to the seat earth pick along the coal column border of going up a hill, and with return air perforations of going up a hill, formation ventilation system;
(2) according to the length of work plane, arrange the caving roof coal hydraulic support (7,8,9) of some, install drag conveyor at the support rear portion;
(3) adopt the coal breakage of drilling and blasting, the coal that falls, with scraper box machine (15) with coal crossheading drag conveyor (11) lining of packing into;
(4) after the support reach, the top coal collapses and, and puts into work plane drag conveyor (10) from caving roof coal hydraulic support (7,8,9) rear portion and transports;
(5), construct gob side entry retaining shed (6) in the roof side of work plane;
(6) repeat (3)~(5) step.
2. coal-mining method according to claim 1 is characterized in that, caving roof coal hydraulic support is made up of the ordinary stent (7) of centre and the end hydraulic support (8,9) at two ends.
3. coal-mining method according to claim 1 is characterized in that, the spacing of shed (6) is different according to the stability of roof, is chosen as 0.5~1.0m, and is tight with pull bar or strut stay bolt between the shed.
4. coal-mining method according to claim 1 is characterized in that, on shed (6), is covered with wire lath or plastic wire (17), and online face is covered with plastic sheeting (18).
CN201010258015XA 2010-08-20 2010-08-20 Method of mining coal from heavy pitch thick coal seam Active CN101915101B (en)

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Application Number Priority Date Filing Date Title
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CN101915101B true CN101915101B (en) 2012-07-25

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Families Citing this family (19)

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CN102425419A (en) * 2011-11-04 2012-04-25 兖州煤业股份有限公司 A novel technology of simultaneous extraction and dismantling for steep inclined gob-side irregular top-coal caving face
CN102606158A (en) * 2012-03-15 2012-07-25 中国煤矿机械装备有限责任公司 Novel low coal seam coal mine underground mining complete equipment
CN103061765B (en) * 2012-12-14 2015-02-18 北京昊华能源股份有限公司 Z type horizontal stratification top coal caving coal mining method in half-edge thick coal seam
CN103422870B (en) * 2013-07-26 2015-09-16 王绍华 Super high seam mining full height roof timbering method
CN104088642B (en) * 2014-06-30 2016-06-08 山东科技大学 A kind of super Shortwall mining method
CN104265291A (en) * 2014-07-22 2015-01-07 天地科技股份有限公司 Comprehensive mechanized coal mining method of steeply inclined and extremely thick coal seam planing conveyor
CN104314566B (en) * 2014-08-21 2016-03-16 中煤科工集团重庆研究院有限公司 Half-edge coal seam is cut sth. askew segmentation Sub-Level Caving coal-mining method
CN104632219B (en) * 2015-01-14 2017-03-29 中国矿业大学 The high gob-side entry retaining method of thick seam large mining
CN104832179B (en) * 2015-05-19 2017-04-26 天地科技股份有限公司 Steep thick coal seam horizontal section full negative pressure ventilation and top coal caving coal mining method
CN106522980A (en) * 2015-09-15 2017-03-22 四川达竹煤电(集团)有限责任公司金刚煤矿 Gob-side roadway protection support for inclined middle-thickness coal bed layered roof and construction method for gob-side roadway protection support
CN105422100A (en) * 2015-12-30 2016-03-23 中国矿业大学(北京) Horizontally segmented high yield roadway layout for sharply inclined coal bed and coal caving mode
CN105986821A (en) * 2016-01-05 2016-10-05 淮南市矿用电子技术研究所 Mining method for steeply inclined coal bed
CN105804751B (en) * 2016-03-15 2018-01-30 山东科技大学 A kind of quick processing method for crossing Genesis of Karst Subsided Column of fully-mechanized mining working
CN106246184A (en) * 2016-08-24 2016-12-21 神华集团有限责任公司 A kind of recovery method of half-edge coal seam
CN106522953B (en) * 2016-12-27 2019-02-19 中国矿业大学(北京) A kind of steep-inclined thick coal seam moves towards longwell longwall top coal caving dynamic segmentation taking and placing technique
CN107676094B (en) * 2017-10-25 2020-02-14 贵州理工学院 Mining method for efficiently releasing productivity of steeply inclined coal seam
CN111119896A (en) * 2019-12-24 2020-05-08 中国矿业大学(北京) Bauxite mining method
CN112065396A (en) * 2020-09-27 2020-12-11 西安科技大学 Mining parameter optimization method for steeply inclined extra-thick coal seam
CN112240206A (en) * 2020-09-27 2021-01-19 西安科技大学 Mining parameter and external regulation and control optimization method for steeply inclined extra-thick coal seam

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