CN103939135B - A kind of fully-mechanized mining working removes frame passage rapid constructing method - Google Patents
A kind of fully-mechanized mining working removes frame passage rapid constructing method Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000005065 mining Methods 0.000 title claims abstract description 19
- 239000003245 coal Substances 0.000 claims abstract description 22
- 238000010276 construction Methods 0.000 claims abstract description 17
- 238000004519 manufacturing process Methods 0.000 claims abstract description 15
- 238000005520 cutting process Methods 0.000 claims description 9
- 239000012530 fluid Substances 0.000 claims description 4
- 238000002347 injection Methods 0.000 claims description 4
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- 230000003245 working effect Effects 0.000 claims description 3
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- 101100521345 Mus musculus Prop1 gene Proteins 0.000 description 4
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- 230000007812 deficiency Effects 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
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- 230000015572 biosynthetic process Effects 0.000 description 1
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Abstract
A kind of fully-mechanized mining working removes frame passage rapid constructing method, is applicable to fully-mechanized mining working under the tight roof geological conditions of colliery and removes in frame passage construction and use.By weakening top board, ensure hydraulic support forestope end apart from the distance of stopping adopting line reach remove frame channels designs width time, make tight roof at hydraulic support top beam tip breakages; And when hydraulic support forestope end apart from the distance of stopping adopting line reach remove frame channels designs width time, stop moving frame, make hydraulic support reach setting load; Under hydraulic support stand effect, remove the mine pressure that frame passage bears and significantly reduce, be conducive to removing frame passage Surrounding Rock Control.Adopt coal-face to cut sth. askew feed mode, progressively back production is removed the coal body of frame passage and is carried out supporting to top board; Repeat above step, constantly extend to working surface tail direction and finally complete the construction of removing frame full tunnel.The method is simple to operate, safe and reliable, and efficiency is high, can significantly accelerate to remove frame passage construction progress, shortens the face moving time.
Description
Technical field
The present invention relates to fully-mechanized mining working and remove frame passage rapid constructing method, especially a kind of tight roof fully-mechanized mining working be applicable under tight roof geological conditions removes frame passage rapid constructing method.
Background technology
The develop rapidly of modern science and technology is that coal in China industry brings boundless vital force, along with the raising of coal industry technical level, large quantities of Modern Pit with high content of technology, that production efficiency is high, good in economic efficiency is successively constructed and put into operation, greatly promote coal industry integral production level, fully mechanized coal winning technology becomes coal mining main flow.
Can the removal of home preparation of fully-mechanized mining working be that can a n-th-trem relation n complete normal production and take over to an ore deposit, realize the important process of stable and high yields.It has very important strategic importance for the continual and steady sound development of shaft production, says to a certain extent, has done a good job of it the removal of home preparation of fully-mechanized mining working, also with regard to creating good condition for the safety in production of mine, has established solid foundation.Wherein, removing frame passage is the necessary condition ensureing that working face equipment is withdrawn from smoothly, and the rapid construction of removing frame passage can promote that digging operation is normally connected.
At present, China's fully-mechanized mining working is removed the formation of frame passage and is mainly contained 2 kinds of modes: first kind of way excavates return channel in advance, and the direct admission passage of support withdraws; The second way is when withdrawing position shifted onto by support, by coal-winning machine coal cutting, and sets anchor pole, anchor cable, forms return channel.
Excavate in advance and remove frame passage and have and construct in advance, driving and supporting are by advantages such as external influence factor are less.But due in working face extraction process, stand the impact of a lead abutment pressure, the maintenance that brettis strengthens passage need be installed, lead abutment pressure will make passage produce gross distortion before through simultaneously, cause and remove frame channel space deficiency, affect hydraulic support withdrawing efficiency, it is low to remove frame space availability ratio; And due to the existence of brettis, also rack restoring efficiency can be affected; Simultaneously driving removes the ventilation resource that frame passage also needs outside occupying volume in advance.What adopt the second way to be formed removes frame passage, have and do not affect by lead abutment pressure, surrouding rock stress is less, need not brettis be set up, transport and the ventilation system of coal-face can be used simultaneously, and utilize hydraulic support to carry out temporary lining to top board, the advantage such as the number that can simultaneously construct of per tour is more, but also there is following shortcoming: remove the impact living through lead abutment pressure before frame passage is formed, rib scope of meeting head on is larger, corresponding anti-slabbing measure need be taked to rib; Coal wall caving is serious, and under hydraulic support, need set anchor pole (rope) controlroof to top board, and the construction of frame pass effect is removed in impact, and there is hidden danger.Meanwhile, roofbolt anchor cable is constructed under support, impact construction.
Summary of the invention
Technical problem: the object of the invention is to overcome the deficiency that existing fully-mechanized mining working removes frame channel construction method, provides the tight roof fully-mechanized mining working that a kind of method is simple, safe and reliable, efficiency is high to remove frame passage rapid constructing method.
Technical scheme: tight roof fully-mechanized mining working of the present invention removes frame passage rapid constructing method, comprises the steps:
A, employing hydraulic fracture or presplitting technique weaken top board in two stope drift active workings at coal-face rear, ensure that hydraulic support forestope end reaches apart from the distance of stopping adopting line and remove frame channels designs width b, make tight roof at hydraulic support top beam tip breakages;
B, when hydraulic support forestope end apart from the distance of stopping adopting line reach remove frame channels designs width b time, stop moving frame, and make hydraulic support reach setting load;
C, the attachment pegs be connected with hydraulic support by drag conveyor are removed, and replace the connecting rod between drag conveyor and hydraulic support, pass drag conveyor by hydraulic prop with hydraulic prop;
D, when ride over the coal-winning machine on drag conveyor move to middle part cut sth. askew feed starting point apart from the distance L of head time, to handpiece of scraper conveyer direction, to cut sth. askew tool feeding method according to coal work Middle face, progressively the coal body in frame passage is removed in back production; Whenever the space width in hydraulic support front reach remove frame channels designs width b time, adopt hydraulic prop and large girder to coordinate support pattern to carry out supporting to top board in time;
E, along with feed work cycle of repeatedly cutting sth. askew, constantly extend to working surface tail direction, complete all coal bodies removed in frame passage of back production, and carry out removing the roof timbering in frame passage, finally complete the construction of removing frame full tunnel.
Described middle part feed starting point of cutting sth. askew is 30 ~ 40m apart from the distance L of head, and feed work cycle of cutting sth. askew number of times is 3 ~ 4 times.
Beneficial effect: instant invention overcomes the deficiency that conventional coal-face removes frame channel construction method, by weakening top board, when the distance making hydraulic support forestope end distance stop adopting line reaches and removes frame channels designs width, tight roof is at hydraulic support top beam tip breakages; And when hydraulic support forestope end apart from the distance of stopping adopting line reach remove frame channels designs width time, stop moving frame, and make hydraulic support reach setting load; Under hydraulic support stand effect, remove the mine pressure that frame passage bears and significantly reduce, be conducive to removing frame passage Surrounding Rock Control.On the other hand, the attachment pegs be connected with hydraulic support by drag conveyor is removed, and replaces the connecting rod between drag conveyor and hydraulic support, pass drag conveyor by hydraulic prop with hydraulic prop, to cut sth. askew tool feeding method according to coal work Middle face, progressively the coal body in frame passage is removed in back production, whenever the space width in hydraulic support front reach remove frame channels designs width time, support pattern is coordinated to carry out supporting to top board in time with regard to adopting hydraulic prop and large girder, complete and remove frame passage rapid construction once supporting, overcome the conventional drawback of removing in frame channel construction method repeatedly supporting of repeatedly constructing, such as routine is removed in frame channel construction method 1/3 width of first constructing and is removed frame passage, just supporting is carried out to top board, when construction 2/3 width removes frame passage, again supporting is carried out to top board, when complete design width of constructing removes frame passage, finally supporting is carried out to top board, frame passage construction progress is removed in repeatedly supporting of repeatedly constructing impact.The present invention is simple to operate, safe and reliable, and efficiency is high, has practicality and generalization widely.
Accompanying drawing explanation
Fig. 1 is that tight roof fully-mechanized mining working of the present invention removes frame passage rapid constructing method schematic diagram.
In figure: 1-hydraulic prop, 2-large girder, 3-hydraulic support, 4-coal-winning machine, 5-drag conveyor, 6-goaf,
Feed starting point of cutting sth. askew in the middle part of L-is apart from the distance of head, and b-removes frame channels designs width.
Detailed description of the invention
Below in conjunction with accompanying drawing, embodiments of the invention are further described:
As shown in Figure 1, tight roof fully-mechanized mining working of the present invention removes frame passage rapid constructing method, and concrete steps are as follows:
A, employing hydraulic fracture or presplitting technique weaken top board in two stope drift active workings at coal-face rear, ensure that hydraulic support forestope end reaches apart from the distance of stopping adopting line and remove frame channels designs width b, make tight roof at hydraulic support top beam tip breakages;
B, when hydraulic support 3 forestope end apart from the distance of stopping adopting line reach remove frame channels designs width b time, stop moving frame, and make hydraulic support reach setting load;
C, the attachment pegs that drag conveyor 5 is connected with hydraulic support 3 to be removed, replace the connecting rod between drag conveyor 5 and hydraulic support 3 with hydraulic prop 1, pass drag conveyor 5 by hydraulic prop 1;
D, when the coal-winning machine 4 ridden on drag conveyor 5 move to middle part cut sth. askew feed starting point be 30 ~ 40m apart from the distance L of head time, to handpiece of scraper conveyer direction, to cut sth. askew tool feeding method according to coal work Middle face, progressively the coal body in frame passage is removed in back production; Whenever the space width in hydraulic support 3 front reach remove frame channels designs width b time, adopt hydraulic prop 1 and large girder 2 to coordinate support pattern to carry out supporting to top board in time;
E, feed work cycle of cutting sth. askew along with 3 ~ 4 times, constantly extend to working surface tail direction, the complete all coal bodies removed in frame passage of back production, and carry out removing the roof timbering in frame passage, finally complete the construction of removing frame full tunnel.
Example 1, the average 2.56m of certain Seams thickness, average 4 ° of seam inclination, immediate roof is limestone, average thickness 8.5m, the average 101.6MPa of unidirectional compressive strength, belongs to solidly top board, and work plane tilts long 143.9m, face roof supporting adopts 4 ZT13200-16/30 type face end supports and 96 ZZ6000-17/32 type supports, and it is 0.6m that coal-winning machine cuts dark.
Remove frame passage enforcement concrete steps as follows:
In a, fully-mechanized mining working exploitation process, in advance in its front two crossheading, to construct in work plane long drilled holes, directed hydraulic fracturing technology is adopted to weaken top board, to ensure before hydraulic support beam-ends apart from the distance of stopping adopting line reach remove frame channels designs width 2.5m time, make tight roof at hydraulic support top beam tip breakages;
B, when hydraulic support forestope end apart from the distance of stopping adopting line reach remove frame channels designs width 2.5m time, stop moving frame, and make it reach setting load;
C, the attachment pegs be connected with hydraulic support by drag conveyor are removed, and replace the connecting rod between drag conveyor 5 and hydraulic support, pass drag conveyor by hydraulic prop with hydraulic prop;
D, when the empty cutter of coal-winning machine 4 ridden on the drag conveyor 5 distance L moved to apart from work plane head is 30m ~ 40m, with fluid injection gun to hydraulic prop 1 fluid injection successively within the scope of distance work plane head 30m ~ 40m, pass drag conveyor, to cut sth. askew tool feeding method according to coal work Middle face simultaneously, progressively the coal body in frame passage is removed in back production, after completing feed stoping operation circulation of cutting sth. askew for 4 times, when the space width in hydraulic support front reach remove frame channels designs width 2.5m time, hydraulic prop and large girder is adopted to coordinate support pattern to carry out supporting to top board in time,
E, repeat above step, constantly extend to working surface tail direction, until the complete all coal bodies removed in frame passage of back production, and carry out removing the roof timbering in frame passage, finally complete the construction of removing frame full tunnel.
Claims (2)
1. fully-mechanized mining working removes a frame passage rapid constructing method, it is characterized in that, comprises the steps:
In a, fully-mechanized mining working exploitation process, in advance in its front two crossheading, to construct in work plane long drilled holes, hydraulic fracture or presplitting technique is adopted to weaken top board in two stope drift active workings at coal-face rear, ensure that hydraulic support forestope end reaches apart from the distance of stopping adopting line and remove frame channels designs width b, make tight roof at hydraulic support top beam tip breakages;
B, when hydraulic support (3) forestope end apart from the distance of stopping adopting line reach remove frame channels designs width b time, stop moving frame, and make hydraulic support reach setting load;
C, the attachment pegs that drag conveyor (5) is connected with hydraulic support (3) to be removed, replace the connecting rod between drag conveyor (5) and hydraulic support (3) with hydraulic prop (1), pass drag conveyor (5) by hydraulic prop (1);
D, when ride over the coal-winning machine (4) on drag conveyor (5) move to middle part cut sth. askew feed starting point be 30 ~ 40m apart from the distance L of head time, to handpiece of scraper conveyer direction, with fluid injection gun to hydraulic prop (1) fluid injection successively within the scope of distance work plane head 30m ~ 40m, pass drag conveyor, to cut sth. askew tool feeding method according to coal work Middle face, progressively the coal body in frame passage is removed in back production; Whenever the space width in hydraulic support (3) front reach remove frame channels designs width b time, adopt hydraulic prop (1) and large girder (2) cooperation support pattern to carry out supporting to top board in time;
E, along with feed work cycle of repeatedly cutting sth. askew, constantly extend to working surface tail direction, complete all coal bodies removed in frame passage of back production, and carry out removing the roof timbering in frame passage, finally complete the construction of removing frame full tunnel.
2. fully-mechanized mining working according to claim 1 removes frame passage rapid constructing method, it is characterized in that: the number of times of described feed work cycle of repeatedly cutting sth. askew is 3 ~ 4 times.
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104847406B (en) * | 2015-03-25 | 2017-04-12 | 中国矿业大学 | Method for fracturing retained filled wall of adjacent coal face |
| CN106089234B (en) * | 2016-07-15 | 2018-05-25 | 北京科技大学 | A kind of method of the auxiliary lane multichannel Quick-return fully-mechanized mining working of long range |
| CN106593529B (en) * | 2017-01-24 | 2018-08-28 | 四川川煤华荣能源股份有限公司 | The forming method in high inclination-angle high-seam working face equipment returning channel |
| CN109268049A (en) * | 2018-08-08 | 2019-01-25 | 中国神华能源股份有限公司 | Fully-mechanized mining working withdraws method |
| CN109339789A (en) * | 2018-11-30 | 2019-02-15 | 山西平阳广日机电有限公司 | A kind of support electrohydraulic control system beveling feed control method |
| CN112065395A (en) * | 2020-09-16 | 2020-12-11 | 刘雪 | Method for quickly withdrawing fully-mechanized coal mining face |
| CN114352286A (en) * | 2021-12-10 | 2022-04-15 | 安徽恒源煤电股份有限公司 | Quick construction supporting method for fully mechanized coal mining face frame removing channel |
| CN115199272B (en) * | 2022-08-11 | 2023-07-18 | 中国矿业大学 | Full life cycle surrounding rock stability control method for fully mechanized mining face pre-digging retracting channel |
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