CN103388477A - Cutting method for creating open-off cut in fully mechanized mining face of steep coal seam and supporting device therefor - Google Patents
Cutting method for creating open-off cut in fully mechanized mining face of steep coal seam and supporting device therefor Download PDFInfo
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- CN103388477A CN103388477A CN2013102978156A CN201310297815A CN103388477A CN 103388477 A CN103388477 A CN 103388477A CN 2013102978156 A CN2013102978156 A CN 2013102978156A CN 201310297815 A CN201310297815 A CN 201310297815A CN 103388477 A CN103388477 A CN 103388477A
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Abstract
The invention discloses a cutting method for creating an open-off cut in a fully mechanized mining face of a steep coal seam and a supporting device therefor. The method comprises the steps of drilling a through hole, reinforcing the wall of the through hole, and forming an open-off cut. In the step of reinforcing the wall of the through hole, a plurality of waste discharge pipes made of hard material and spliced along the length direction are arranged in the through hole, and the first waste discharge pipe in a lower tunnel is fastened to the inner wall of the through hole, so that a reinforced waste discharge channel is formed in the coal seam between the upper and the lower tunnels. The supporting device comprises a drilling machine and a hole reaming tool as well as a first winch, a second winch and a pressing plate. The first and the second winches are arranged in the upper and the lower tunnels respectively. The pressing plate is detachably fastened to winch ropes of the first and the second winches. The beneficial effects are that the method can ensure an unobstructed waste discharge channel during subsequent manual digging processes; and the supporting device can arrange the waste discharge pipes conveniently and reliably to reinforce the through hole wall to ensure that the waste discharge channel is not blocked.
Description
Technical field
The present invention relates to a kind of open-off cut technology of half-edge coal seam fully-mechanized mining working, particularly a kind of opening blanking method and opening and cut corollary apparatus for half-edge coal seam fully-mechanized mining working open-off cut.
Background technology
In the half-edge coal seam working face, during a work plane of new laying, usually first adopt the mode of artificial digging, along coal seam thickness by make progress tunnel or by the light section through hole of the downward tunnel initating in upper tunnel one width 2000mm left and right, lower tunnel, expanded to the major path that can be fit to laterally put the fully mechanized mining supporter corresponding size by downward tunnel, upper tunnel along coal seam thickness again, form open-off cut.During artificial digging light section through hole, digging speed is slow, poor stability, and open-off cut efficiency is low.For this reason, need to improve.
Summary of the invention
The first purpose of the present invention is to overcome the deficiencies in the prior art, and a kind of blanking method of opening of half-edge coal seam fully-mechanized mining working open-off cut is provided, and by the drill hole of drilling machine mode, forms a discharge refuse passage, and discharge refuse passage latus rectum does not dwindle, hole wall does not cave in, discharge refuse is smooth.To replace artificial digging light section through hole, thus the safety of cutting efficiency and digging of opening that improves open-off cut.The second purpose of the present invention is to provide opening of a kind of open-off cut and cuts corollary apparatus,, to be used for half-edge coal seam fully-mechanized mining working open-off cut process, forms the discharge refuse passage that latus rectum does not dwindle, hole wall does not collapse.
For realizing the first purpose, the present invention adopts following technical scheme.
A kind of half-edge coal seam fully-mechanized mining working open-off cut open blanking method, comprise the following steps:
The first step, boring: utilize rig to form a through hole on the coal seam between upper tunnel and lower tunnel;
Second step, hole wall is strengthened: the discharge refuse pipe that the more piece that setting is made by hard material in described through hole is spliced along its length mutually, the splicing length of more piece discharge refuse pipe and described through hole length adapt; And the head that will be positioned at place, lower tunnel saves the discharge refuse pipe and described through-hole wall forms fastening;
In the 3rd step, open-off cut forms: utilize the passage of discharge refuse pipe pore formation as the discharge refuse passage, then along coal seam thickness, by downward tunnel, upper tunnel, enlarge described through hole to form open-off cut, and remove one by one described discharge refuse pipe to digging and complete.
After adopting technique scheme, owing to being provided with the more piece made by the hard material discharge refuse pipe of splicing mutually along its length in through hole, the pore of more piece discharge refuse pipe forms the discharge refuse passage, and the discharge refuse pipe has formed the reinforcement structure to the through hole hole wall.Therefore, in follow-up artificial digging process, the discharge refuse passage can not cause coal and rock to collapse because blowing out etc., the latus rectum of passage can not diminish, can guarantee that the discharge refuse passage is unobstructed, can be used for continuing discharge refuse, thereby effectively improve opening of open-off cut, cut efficiency, and replaced artificial digging light section, eliminated the light-gauge potential safety hazard of artificial digging.
In the step of described boring, comprise and utilize the direct brill one of the rig through hole of discharge refuse smoothly, or utilize the through hole of rig subdrilling one small diameter, and then utilize rig to be extended to the through hole of discharge refuse smoothly, the diameter 1000～2000mm of through hole.
Preferably, in the step that described hole wall is strengthened, comprising:
1.1 winch is set: in upper tunnel and lower tunnel, the first winch and the second winch are set respectively;
1.2 wear twisted rope: the twisted rope of described the second winch is passed and enters upper tunnel from through hole, and pass successively and intend all discharge refuse pipes of installing;
1.3 twisted rope is fixed: the twisted rope free end of described the first winch is fixed in the head that intends installing saves outside, described discharge refuse pipe lower end; To guarantee at discharge refuse pipe pipe outer diameter during less than the through hole latus rectum, the not free-falling of discharge refuse pipe.
1.4 pressing plate setting: in the described discharge refuse pipe upper end of intending installing, pressing plate is set, pressing plate removably is fixed on the twisted rope of described the first winch and described the second winch; To guarantee that the discharge refuse pipe can be installed in through hole smoothly at discharge refuse pipe pipe outer diameter and through hole forming section jam the time;
1.5 the discharge refuse pipe is installed: twisted rope to the described discharge refuse pipe that tightens up described the second winch arrives desired location, and the dismounting pressing plate.
Repeat the step that pressing plate setting and discharge refuse pipe are installed, until all discharge refuse pipes are installed complete.
For realizing the second purpose, the present invention adopts following technical scheme.
Corollary apparatus is cut in opening of a kind of half-edge coal seam fully-mechanized mining working open-off cut, and rig and reaming tool also comprise the first winch, the second winch and pressing plate, and the first winch and the second winch are separately positioned in tunnel and lower tunnel; Described pressing plate detachably is fixedly connected on the twisted rope of described the first winch and the second winch.
Adopt the corollary apparatus of the present invention of technique scheme, the brill that rig and reaming tool are used for before artificial open-off cut expands the discharge refuse hole, the first winch, the second winch and pressing plate are used for the hole wall of preceding method and strengthen step, install the discharge refuse pipe that hard material is made in through hole, with when artificial open-off cut carries out shot firing operation, coal and rock is not caved in, and the aperture of discharge refuse passage does not dwindle, do not stop up.
Preferably, described pressing plate is comprised of pressing plate body and two locking pressure plate, is provided with the space that described twisted rope passes between pressing plate body and locking pressure plate, and the pressing plate body is connected by threaded fastener with locking pressure plate; One described locking pressure plate is positioned at described pressing plate body one middle side part, and another described locking pressure plate is positioned at described pressing plate body one end.During application, the pressing plate body length is set to the discharge refuse pipe external diameter of installing greater than intending.
The present invention's beneficial effect compared with prior art is, open blanking method and cancelled the light-gauge program of artificial digging, and in follow-up artificial digging process, the discharge refuse passage can not cause that coal and rock collapses, the latus rectum of passage can not diminish and the discharge refuse passage is unobstructed because blowing out etc.; It is opened and cuts that efficiency is high, safety good; Corollary apparatus can facilitate, implement reliably through hole is installed the discharge refuse pipe, and the through hole hole wall is strengthened, and is common to guarantee discharge refuse.
Description of drawings
Fig. 1 is the initial stage structural representation for the open-off cut of explanation the inventive method; Also be used for simultaneously explanation apparatus of the present invention.
Fig. 2 is that arranging of apparatus of the present invention center platen and discharge refuse pipe 5 concerns schematic diagram.
The specific embodiment
The present invention is further illustrated below in conjunction with accompanying drawing, but therefore do not limit the present invention among described scope of embodiments.
Embodiment 1 is referring to Fig. 1, Fig. 2, a kind of half-edge coal seam fully-mechanized mining working open-off cut open blanking method, comprise the following steps:
The first step, boring: form a through hole 4 on the coal seam 3 between upper tunnel 1 and lower tunnel 2;
Second step, hole wall are strengthened: the more piece of being made by hard material in the interior setting of described through hole 4 is the discharge refuse pipe 5 of splicing mutually along its length, and the splicing length of more piece discharge refuse pipe 5 and described through hole 4 length adapt; And the head that will be positioned at 2 places, lower tunnel saves discharge refuse pipe 5 and described through hole 4 inwalls form fastening;
In the 4th step, open-off cut forms: utilize the passage of discharge refuse pipe 5 pores formation as the discharge refuse passage, then along coal seam thickness, by upper tunnel 1 to lower tunnel 2, enlarge described through holes to form open-off cut, and remove one by one described discharge refuse pipe 5 to digging and complete.
In the step that described hole wall is strengthened, comprising:
1.1 winch is set: respectively at interior the first winch 6 and the second winch 7 of arranging in upper tunnel 1 and lower tunnel 2;
1.2 wear twisted rope: the twisted rope of described the second winch 7 is passed and enters upper tunnel 1 from through hole 4, and pass successively and intend all discharge refuse pipes 5 of installing;
1.3 twisted rope is fixed: the twisted rope free end of described the first winch 6 is fixed in the head that intends installing saves described discharge refuse pipe 5 outsides, lower ends; To guarantee when discharge refuse pipe 5 is managed outer diameters less than through hole 4 latus rectum, the 5 not free-fallings of discharge refuse pipe.
1.4 pressing plate setting: in described discharge refuse pipe 5 upper ends of intending installing, pressing plate 8 is set, pressing plate 8 removably is fixed on the twisted rope of described the first winch 6 and described the second winch 7; To guarantee that discharge refuse pipe 5 can be installed in through hole 4 smoothly at discharge refuse pipe 5 pipe outer diameters and through hole 4 forming section jam the time;
1.5 the discharge refuse pipe is installed: twisted rope to the described discharge refuse pipe 5 that tightens up described the second winch 7 arrives desired location, and dismounting pressing plate 8.
Repeat the step that pressing plate setting and discharge refuse pipe are installed, until all discharge refuse pipes 5 are installed complete.
Described pressing plate 8 is comprised of pressing plate body 81 and two locking pressure plate 82, is provided with the space that described twisted rope passes between pressing plate body 81 and locking pressure plate 82, and pressing plate body 81 is connected by threaded fastener with locking pressure plate 82; One described locking pressure plate 82 is positioned at described pressing plate body 81 1 middle side parts, and another described locking pressure plate 82 is positioned at described pressing plate body 81 1 ends.
Although the above embodiments of the present invention of having described by reference to the accompanying drawings, but those of ordinary skill in the art also can recognize in scope to claims and make various variations or modification, and these modifications and variations are interpreted as within scope of the present invention and intention.
Claims (4)
- A half-edge coal seam fully-mechanized mining working open-off cut open blanking method, it is characterized in that, comprise the following steps:The first step, boring: utilize the upper through hole (4) that forms in the coal seam (3) of rig between upper tunnel (1) and lower tunnel (2);Second step, hole wall is strengthened: the discharge refuse pipe (5) that the more piece that setting is made by hard material in described through hole (4) is spliced along its length mutually, the splicing length of more piece discharge refuse pipe (5) and described through hole (4) length adapt; And will be positioned at the head that locates in lower tunnel (2) and save discharge refuse pipe (5) and described through hole (4) inwall and form fastening;The 3rd step, open-off cut forms: utilize the passage of discharge refuse pipe (5) pore formation as the discharge refuse passage, enlarge described through hole to form open-off cut along coal seam thickness by upper tunnel (1) to lower tunnel (2) again, and remove one by one described discharge refuse pipe (5).
- Half-edge coal seam fully-mechanized mining working open-off cut according to claim 1 open blanking method, it is characterized in that, preferred, in the step that described hole wall is strengthened, comprising:1.1 winch is set: the first winch (6) and the second winch (7) are set respectively in upper tunnel (1) and lower tunnel (2);1.2 wear twisted rope: the twisted rope of described the second winch (7) is passed and enters upper tunnel (1) from through hole (4), and pass successively and intend all discharge refuse pipes (5) of installing;1.3 twisted rope is fixed: the twisted rope free end of described the first winch (6) is fixed in the head that intends installing saves outside, described discharge refuse pipe (5) lower end;1.4 pressing plate setting: in described discharge refuse pipe (5) upper end of intending installing, pressing plate (8) is set, pressing plate (8) removably is fixed on the twisted rope of described the first winch (6) and described the second winch (7);1.5 the discharge refuse pipe is installed: twisted rope to the described discharge refuse pipe (5) that tightens up described the second winch (7) arrives desired location, and dismounting pressing plate (8).
- 3. opening of a half-edge coal seam fully-mechanized mining working open-off cut cut corollary apparatus, rig and reaming tool, it is characterized in that, also comprise the first winch (6), the second winch (7) and pressing plate (8), the first winch (6) and the second winch (7) are separately positioned in tunnel (1) and lower tunnel (2); Described pressing plate (8) detachably is fixedly connected on the twisted rope of described the first winch (6) and the second winch (7).
- 4. opening of half-edge coal seam fully-mechanized mining working open-off cut according to claim 3 cut corollary apparatus, it is characterized in that, described pressing plate (8) is comprised of pressing plate body (81) and two locking pressure plate (82), be provided with the space that described twisted rope passes between pressing plate body (81) and locking pressure plate (82), pressing plate body (81) is connected by threaded fastener with locking pressure plate (82); One described locking pressure plate (82) is positioned at described pressing plate body (81) one middle side parts, and another described locking pressure plate (82) is positioned at described pressing plate body (81) one ends.
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| CN2013102978156A CN103388477A (en) | 2013-07-06 | 2013-07-06 | Cutting method for creating open-off cut in fully mechanized mining face of steep coal seam and supporting device therefor |
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| CN2013102978156A CN103388477A (en) | 2013-07-06 | 2013-07-06 | Cutting method for creating open-off cut in fully mechanized mining face of steep coal seam and supporting device therefor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104047609A (en) * | 2014-06-24 | 2014-09-17 | 四川省华蓥山煤业股份有限公司绿水洞煤矿 | Heavy pitch fully mechanized coal mining face open-off cut pilot drilling construction method |
| CN104110259A (en) * | 2014-04-29 | 2014-10-22 | 四川省华蓥山煤业股份有限公司李子垭南煤矿 | Steeply inclined seam fully mechanized mining face through cut rock discharge hole wall reinforcing method and apparatus thereof |
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| RU2332566C1 (en) * | 2006-12-15 | 2008-08-27 | Институт угля и углехимии Сибирского отделения Российской Академии Наук (ИУУ СО РАН) | Method for mining pitching and steeply pitching coal seams |
| CN101307692A (en) * | 2008-07-14 | 2008-11-19 | 邹开科 | Sharply inclined coal seam mining method |
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| CN203347791U (en) * | 2013-07-06 | 2013-12-18 | 四川省华蓥山煤业股份有限公司李子垭南煤矿 | Cutting supporting device for open-off cut of fully-mechanized coal mining surface of sharp inclined coal seam |
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2013
- 2013-07-06 CN CN2013102978156A patent/CN103388477A/en active Pending
Patent Citations (4)
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| RU2332566C1 (en) * | 2006-12-15 | 2008-08-27 | Институт угля и углехимии Сибирского отделения Российской Академии Наук (ИУУ СО РАН) | Method for mining pitching and steeply pitching coal seams |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104110259A (en) * | 2014-04-29 | 2014-10-22 | 四川省华蓥山煤业股份有限公司李子垭南煤矿 | Steeply inclined seam fully mechanized mining face through cut rock discharge hole wall reinforcing method and apparatus thereof |
| CN104047609A (en) * | 2014-06-24 | 2014-09-17 | 四川省华蓥山煤业股份有限公司绿水洞煤矿 | Heavy pitch fully mechanized coal mining face open-off cut pilot drilling construction method |
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Application publication date: 20131113 |