CN101936164A - Very soft thick coal seam forepoling hold top coal caving mining method and hydraulic support structure - Google Patents
Very soft thick coal seam forepoling hold top coal caving mining method and hydraulic support structure Download PDFInfo
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- CN101936164A CN101936164A CN 201010255191 CN201010255191A CN101936164A CN 101936164 A CN101936164 A CN 101936164A CN 201010255191 CN201010255191 CN 201010255191 CN 201010255191 A CN201010255191 A CN 201010255191A CN 101936164 A CN101936164 A CN 101936164A
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Abstract
The invention discloses a very soft thick coal seam hold and full-mechanized top coal caving mining method and a top coal caving hydraulic support structure which is applicable to the process requirements of very soft coal seam hold and full-mechanized top coal caving, and the method can form the hold mining process features by using a roller of a coal mining machine to cut and load coal under a top beam of the support, realize the full-closed mining of a working face, and lead the beam end distance of the top beam (the distance between the front end of the top beam and the coal wall when using the coal mining machine to cut and mine) to be close to zero or be a negative value, and a coal shoveling plate is arranged at the front end of a shovel type telescopic beam, thereby being capable of shoveling off top coal under the situation that the coal wall spalling is insufficient, protecting an exposed top plate under the situation that the coal wall is sufficiently spalled and further avoiding the large-area roof-fall accidents, wherein the telescopic stroke of a jack of the telescopic beam is larger than a web of the coal mining machine. The method can realize the full-mechanized mining of a very soft coal seam and has the advantages of low cost, simple process, safety, high efficiency and the like.
Description
Technical field
The present invention relates to coal mining support apparatus technical field, belong to a kind of dead-soft high seam coal caving mining method and coordinative composition of equipments pattern of being used for.
Background technology
Mining is one of China's high seam high-efficiency mining method, and in national wide popularization and application, caving roof coal hydraulic support is the critical equipment of top coal caving method.At present, the supporting mode of mining coal-mining method working face equipment generally is an immediate support, machine mining height degree is the caving roof coal hydraulic support supporting height, keep certain beam-ends distance during the coal-winning machine coal cutting between set cap front end and rib, after the coal mining machine roller coal cutting, support in time moves frame with machine, so be called " immediate support ".Be considered to the most rational support pattern for this longwall top coal caving support pattern of general high seam.
Yet for the dead-soft high seam, because coal and rock is weak glued, coal is the loose media state, is adopting under the leading pressure effect, and rib and top, support the place ahead coal sheet emit seriously, and be uncontrollable, adopts the above-mentioned longwall top coal caving technology can't ordinary production.Extremely low and the rate of extraction is extremely low with other exploitation method efficient, this difficult problem is perplexing coal enterprise for a long time.
Finding a kind of coal-mining method that can exploit this class dead-soft coal seam safely and efficiently is the important goal of difficult mining coal seam production technique development.For this reason, this patent inventor has carried out long-term test with relevant enterprise and has explored, and constantly sums up from practice, proposes the present invention, and proves highly effective through type approval test.
Summary of the invention
The purpose of this invention is to provide a kind of effective technique and support pattern and caving roof coal hydraulic support structure of utmost point loose thick coal layer longwall top coal caving, can control rib effectively, making smooth advances of fully mechanized coal face realized on wall caving and leakage top when avoiding coal-winning machine to mine.
For achieving the above object, the longwall top coal caving process of the present invention's design is different with conventional longwall top coal caving with support pattern, the Matching Relationship of first coal-winning machine and caving roof coal hydraulic support is an advance support, be machine adopt the cut working cycles when beginning coal mining machine roller cut under set cap coaling, along with wall caving, the roof fall of rib, stretch out the shovel extensible canopy and protect or even out the top coal, first moving conveyor, the post-tensioning moving hydraulic support forms and embraces the excavating technology feature; It two is that the structure of caving roof coal hydraulic support will adapt to this dead-soft coal seam and embraces taking and placing top coal mining technological requirement, and the support front end will have bigger support capacity, and the thrust of extensible canopy jack is big so that the shovel extensible canopy is evened the top coal out.Leak coal for fear of between frame, the shovel extensible canopy is installed the bilateral activity side guard board, and back timber active side backplate rear end is provided with waste rock board, realizes the totally-enclosed exploitation of support.
Description of drawings
Fig. 1 is that taking and placing top coal mining method schematic diagram is embraced in patent dead-soft of the present invention coal seam
Fig. 2 is adapted to embrace the caving roof coal hydraulic support structure chart (coal mining machine cut, the state of coalingging) of taking and placing top coal mining method
Fig. 3 caving roof coal hydraulic support ramp plate structural representation
Fig. 4 caving roof coal hydraulic support shovel extensible canopy structural representation
The specific embodiment
Patent dead-soft high seam advance support of the present invention shown in Figure 1 is embraced and is adopted the formula coal-mining method, mainly is made up of coal-winning machine (1), anterior conveyer (2), caving roof coal hydraulic support (3), rear portion conveyer parts such as (4).Under the dead-soft coal seam conditions, coal-winning machine (1) is an advance support with the Matching Relationship of caving roof coal hydraulic support (3), be machine adopt the cut working cycles when beginning coal-winning machine (1) cylinder under caving roof coal hydraulic support (3) back timber (7), cut ground coal, coaling, shown in Fig. 1 (a), this moment, the roof fall of working face wall wall caving reached a dynamic equilibrium, coal mining efficient height, safety is secure, along with the carrying out of coalingging, the further wall caving of rib, if wall caving is abundant, then can stretch out shovel extensible canopy (5) fully, if top coal wall caving out-of-flatness, available shovel extensible canopy (5) is flat with the top coal shovel, shown in Fig. 1 (b), under Fig. 1 (b) state, the operation thrust gear push anterior conveyer (2) to rib, shown in Fig. 1 (c), pass anterior conveyer (2) after, the operation thrust gear, with caving roof coal hydraulic support (3) reach, form Fig. 1 (d) state, and swing rear portion tail boom, the top coal of support top is put on the rear portion conveyer (4), finish a working cycles, form and embrace the excavating technology feature, realize the caving coal safety in dead-soft coal seam, high-efficiency mining.
Figure 2 shows that patent of the present invention is applicable to that dead-soft high seam advance support embraces the hydraulic support of adopting the formula coal-mining method, be with the improvement of traditional caving roof coal hydraulic support, increase the structure of shovel extensible canopy (5), improvement back timber (7), realize the totally-enclosed exploitation of work plane.
Embrace taking and placing top coal mining technological requirement for adapting to this dead-soft coal seam, make the support front end that bigger support capacity be arranged, simultaneously to the reach of the point of resultant force of top board, what better adapt to the dead-soft coal seam puts the coal operating mode.
Figure 3 shows that the reverse L type ramp plate of patent design of the present invention, it is by being bolted on the extensible canopy, form the shovel extensible canopy, as shown in Figure 4, Figure 4 shows that the shovel extensible canopy of patent design of the present invention, shovel extensible canopy (5) top board is whole plated construction, its leading section can be installed bilateral activity side guard board (8,9), can realize totally-enclosed between frame and the frame, as shown in Figure 3, its rear end can extend in the back timber (7) fully, and its front end is equipped with reverse L type ramp plate (10), under the inadequate situation of coal wall caving, the thrust of extensible canopy jack (6) is enough to shovel does not have the top of wall caving inbreak coal, if coal wall caving is abundant, stretches out shovel extensible canopy (5) and can protect exposed top board, avoid causing large-area roof fall accident, and flexible jack (6) stroke is dark greater than cutting of a coal-winning machine (1).
The shovel extensible canopy (5) of support, back timber (7), caving shield and tail boom are provided with the bilateral activity side guard board, and side guard board extends to the front and rear portions of support, and at back timber side guard board rear portion waste rock board are set, and avoid staying in the top slit of broken coal between support.
Claims (3)
1. a utmost point loose thick coal layer is embraced and is adopted the mining coal-mining method, the Matching Relationship that it is characterized in that coal-winning machine and caving roof coal hydraulic support is an advance support, be machine adopt the cut working cycles when beginning the back timber beam-ends push up rib, coal mining machine roller cut and coalingging under set cap, form to embrace an excavating technology feature, pushing and sliding then, draw moving hydraulic support;
2. according to claim 1 a kind of adapt to the dead-soft coal seam to embrace Matching Relationship that the work plane caving roof coal hydraulic support of taking and placing top coal mining technological requirement and drag conveyor and coal-winning machine form be the back timber beam-ends apart from (the back timber front end was to the distance of rib when the coal-winning machine cut was mined) approach zero or be negative value, at this moment, hydraulic support passing jack piston rod is in whole retracted states;
3. caving roof coal hydraulic support according to claim 2, the bilateral activity side guard board is installed in its shovel extensible canopy front end (beam head) both sides, shovel extensible canopy front end is installed reverse L type ramp plate, under the inadequate situation of coal wall caving, the top coal can be shoveled, under the abundant wall caving situation of rib, exposed top board can be protected, avoid causing large-area roof fall accident, the flexible stroke of extensible canopy jack cuts dark greater than one of coal-winning machine.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201010255191 CN101936164A (en) | 2010-08-17 | 2010-08-17 | Very soft thick coal seam forepoling hold top coal caving mining method and hydraulic support structure |
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| CN 201010255191 CN101936164A (en) | 2010-08-17 | 2010-08-17 | Very soft thick coal seam forepoling hold top coal caving mining method and hydraulic support structure |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102720499A (en) * | 2012-06-29 | 2012-10-10 | 中国矿业大学 | Fully-mechanized top-coal caving, filling and mining method |
| CN102720517A (en) * | 2012-06-08 | 2012-10-10 | 三一重型装备有限公司 | Advance support, advance support set and advance supporting device |
| CN102926785A (en) * | 2012-11-16 | 2013-02-13 | 山东矿机集团股份有限公司 | Method for preventing rib spalling of coal wall and roof falling in head face and hydraulic support thereof |
| CN103195427A (en) * | 2013-04-09 | 2013-07-10 | 中国矿业大学 | Top-shoveling and bottom-cutting type full-seam mining fully-mechanized coal mining method for extrasoft thick coal seam |
| CN103410545A (en) * | 2013-08-09 | 2013-11-27 | 冀中能源机械装备集团有限公司邢台机械厂 | Hydraulic support capable of realizing top coal caving and filling operation |
| CN103485785A (en) * | 2013-09-05 | 2014-01-01 | 山东新巨龙能源有限责任公司 | Method for preventing residual coal during top coal caving on fully mechanized caving face |
| CN103939100A (en) * | 2014-04-24 | 2014-07-23 | 黑龙江科技大学 | Cooperative type interactive coal mining operation simulation system and method thereof |
| CN104632219A (en) * | 2015-01-14 | 2015-05-20 | 中国矿业大学 | Large mining height gob-side entry retaining method for thick coal seams |
| CN104879162A (en) * | 2015-05-29 | 2015-09-02 | 中国矿业大学(北京) | Reasonable gangue dropping and gob-side entry retaining method of top coal caving face |
| CN105863639A (en) * | 2016-05-27 | 2016-08-17 | 安徽理工大学 | Coal-mining method of loose coal seam |
| CN111255496A (en) * | 2020-01-22 | 2020-06-09 | 辽宁工程技术大学 | Coal pillar auxiliary type mining advanced temporary support device and using method thereof |
| CN113586106A (en) * | 2021-09-03 | 2021-11-02 | 安徽理工大学 | Non-frame spacing fully mechanized caving hydraulic support and method for preventing top leakage of inclined loose thick coal seam |
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| CN1279340A (en) * | 1999-06-30 | 2001-01-10 | 萨尔技术股份有限公司 | Shield supports for having influence on edge of roof caving |
| CN1607316A (en) * | 2003-10-16 | 2005-04-20 | 新疆乌鲁木齐矿业（集团）有限责任公司 | Top-coal caving method with horizontal sectional light-support in steep and close seams |
| CN200940489Y (en) * | 2006-08-04 | 2007-08-29 | 王新民 | Hydraulic chock of medium thick coal layer combined advanced support |
| CN101666230A (en) * | 2009-10-09 | 2010-03-10 | 耿学文 | Coal mining method of lengthened front-beam fully-mechanized mining and fully-mechanized top coal carving of three-soft coal seam and equipment |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1279340A (en) * | 1999-06-30 | 2001-01-10 | 萨尔技术股份有限公司 | Shield supports for having influence on edge of roof caving |
| CN1607316A (en) * | 2003-10-16 | 2005-04-20 | 新疆乌鲁木齐矿业（集团）有限责任公司 | Top-coal caving method with horizontal sectional light-support in steep and close seams |
| CN200940489Y (en) * | 2006-08-04 | 2007-08-29 | 王新民 | Hydraulic chock of medium thick coal layer combined advanced support |
| CN101666230A (en) * | 2009-10-09 | 2010-03-10 | 耿学文 | Coal mining method of lengthened front-beam fully-mechanized mining and fully-mechanized top coal carving of three-soft coal seam and equipment |
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102720517A (en) * | 2012-06-08 | 2012-10-10 | 三一重型装备有限公司 | Advance support, advance support set and advance supporting device |
| CN102720517B (en) * | 2012-06-08 | 2014-08-13 | 三一重型装备有限公司 | Advance support, advance support set and advance supporting device |
| CN102720499A (en) * | 2012-06-29 | 2012-10-10 | 中国矿业大学 | Fully-mechanized top-coal caving, filling and mining method |
| CN102926785B (en) * | 2012-11-16 | 2015-10-14 | 山东矿机集团股份有限公司 | The method of roof fall before anti-coal wall caving and frame and hydraulic support thereof |
| CN102926785A (en) * | 2012-11-16 | 2013-02-13 | 山东矿机集团股份有限公司 | Method for preventing rib spalling of coal wall and roof falling in head face and hydraulic support thereof |
| CN103195427A (en) * | 2013-04-09 | 2013-07-10 | 中国矿业大学 | Top-shoveling and bottom-cutting type full-seam mining fully-mechanized coal mining method for extrasoft thick coal seam |
| CN103410545A (en) * | 2013-08-09 | 2013-11-27 | 冀中能源机械装备集团有限公司邢台机械厂 | Hydraulic support capable of realizing top coal caving and filling operation |
| CN103485785A (en) * | 2013-09-05 | 2014-01-01 | 山东新巨龙能源有限责任公司 | Method for preventing residual coal during top coal caving on fully mechanized caving face |
| CN103939100B (en) * | 2014-04-24 | 2016-08-24 | 黑龙江科技大学 | Cooperating type mutual coal mining activity analogue system carries out the method for cooperating type mutual coal mining activity emulation |
| CN103939100A (en) * | 2014-04-24 | 2014-07-23 | 黑龙江科技大学 | Cooperative type interactive coal mining operation simulation system and method thereof |
| CN104632219A (en) * | 2015-01-14 | 2015-05-20 | 中国矿业大学 | Large mining height gob-side entry retaining method for thick coal seams |
| 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 |
| CN104879162A (en) * | 2015-05-29 | 2015-09-02 | 中国矿业大学(北京) | Reasonable gangue dropping and gob-side entry retaining method of top coal caving face |
| CN105863639A (en) * | 2016-05-27 | 2016-08-17 | 安徽理工大学 | Coal-mining method of loose coal seam |
| CN111255496A (en) * | 2020-01-22 | 2020-06-09 | 辽宁工程技术大学 | Coal pillar auxiliary type mining advanced temporary support device and using method thereof |
| CN111255496B (en) * | 2020-01-22 | 2021-06-04 | 辽宁工程技术大学 | Coal pillar auxiliary type mining advanced temporary support device and using method thereof |
| CN113586106A (en) * | 2021-09-03 | 2021-11-02 | 安徽理工大学 | Non-frame spacing fully mechanized caving hydraulic support and method for preventing top leakage of inclined loose thick coal seam |
| CN113586106B (en) * | 2021-09-03 | 2022-07-01 | 安徽理工大学 | Non-frame spacing fully mechanized caving hydraulic support for preventing top leakage of inclined loose thick coal seam |
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Application publication date: 20110105 |