CN103061771B - Second mining mine fully mechanized coal face cuts eye driving and supporting method thereof - Google Patents

Second mining mine fully mechanized coal face cuts eye driving and supporting method thereof Download PDF

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Publication number
CN103061771B
CN103061771B CN201210557640.3A CN201210557640A CN103061771B CN 103061771 B CN103061771 B CN 103061771B CN 201210557640 A CN201210557640 A CN 201210557640A CN 103061771 B CN103061771 B CN 103061771B
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China
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driving
steel
support
eye
supporting
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CN201210557640.3A
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Chinese (zh)
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CN103061771A (en
Inventor
郭金刚
李先章
李志群
尹文怀
李建军
闫正
贾黎明
薛尚林
党哲
韩艳华
付茂全
景金娥
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大同煤矿集团有限责任公司
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Abstract

The present invention is that a kind of second mining mine fully mechanized coal face cuts eye driving and supporting method thereof, cuts a piercing technique for resource consolidation second mining mine provides one.A section configuration of cutting of the inventive method driving is rectangle, cuts a clear height 2.5m, clear span 6.2m; Cutting eye driving adopts secondary to expand side Driving technique, and driving coal breakage mode is all manual pneumatic pick coal breakage; First through with air return way at air intake crossheading first light section driving, then brush large exploitation side coal side is to designing width.First time becomes lane clear height 2.5m, clear span 4m, adopts beam four post and the combined supportings such as complexed metal mesh sheet; Secondary expands side clear height 2.5 meters, clear span 2.2m, adopts beam three post and the combined supportings such as complexed metal mesh sheet; Finally play row's anchor cable respectively and carry out strengthening supporting cutting eye two entrance to a lane top board.What the inventive method adopted secondary Kuo Bangcheng lane to dig enters new technology, has effectively stopped the accidents such as roof fall, has completed the driving task that such mine working face cuts eye safely and efficiently.

Description

Second mining mine fully mechanized coal face cuts eye driving and supporting method thereof
Technical field
The present invention relates to Coal Mining Technology field, specifically a kind of second mining mine fully mechanized coal face cuts eye driving and supporting method thereof.
Background technology
At present, a lot of mine all belongs to resource consolidation mine, and such mine is all generally integrated by the multiple little kiln in past to form.When seam mining, because kiln little in field with "nine squares" destroys comparatively serious, there is large area goaf in coal seam, is typical second mining mine.Cut in a tunneling construction at the fully mechanized coal face of such mine, goaf will be passed through in tunnel, due to the little kiln back production destruction of tunnel top layer, and ature of coal is soft, according to the actual state of such mine, the piercing technique that the inapplicable employing of fully mechanized coal face incisor canal is traditional, in order to ensure safety in production, must technology for full demonstration and investigation be carried out, determine that applicable second mining mine fully mechanized coal face cuts the construction technology of eye driving.
Summary of the invention
The object of the invention is to provide a kind of production practice for second mining mine, specifically a kind of second mining mine fully mechanized coal face cuts eye driving and supporting method thereof.
The present invention is achieved by the following technical solutions:
A kind of second mining mine fully mechanized coal face cuts eye driving and supporting method thereof, and a section configuration of cutting of driving is rectangle, cuts a clear height 2.5m, clear span 6.2m; Cutting eye driving adopts secondary to expand side Driving technique, driving coal breakage mode is all manual pneumatic pick coal breakage, through with air return way at air intake crossheading first light section driving, then brush large exploitation side coal side is to designing width, concrete steps are: the first time of a) carrying out cutting eye by air intake crossheading to air return way becomes lane, first time becomes lane section configuration to be rectangle, requires that one-tenth lane clear height 2.5m, clear span are 4m for the first time; During supporting, metal mesh sheet by the first stent support is laid by top side, first support adopts first steel I-beam of long 4m, supported by monomer liquid compression leg, one beam four post supporting, the two ends of the first steel I-beam respectively support the hydraulic prop of two spacing 1m, and between the first steel I-beam and metal mesh sheet, the back of the body is real gallows timber, and the spacing of adjacent two first supports is 0.5m; First time becomes lane from air intake crossheading, and first time installs first the first support when digging footage reaches 2m, and later every drilling depth 1.5m just installs first support, by that analogy, until first time one-tenth lane completes; B) from air intake crossheading, carry out expansions side along first time Cheng Xiang direction, clear height and become for the first time that lane clear height is identical, clear span 2.2m, make a final clear span of cutting reach 6.2m; During supporting, metal mesh sheet by the second stent support is laid by top side, second support adopts second steel I-beam of long 2.8m, supported by monomer liquid compression leg, one beam three post supporting, the two ends of the second steel I-beam and centre position respectively support a hydraulic prop, and between the second steel I-beam and metal mesh sheet, the back of the body is real gallows timber; During concrete supporting, the first steel I-beam that the first support is close to by second steel I-beam of the second support installs, and the lap length of the second steel I-beam and the first steel I-beam is 0.6m, expand side from air intake crossheading, expand when side drilling depth reaches 2m and install first the second support, every drilling depth 1.5m just installs second support later, by that analogy, complete until expand side, what form clear span 6.2m cuts eye; C) after completing incisor canal, row's anchor cable played respectively by the top board at two entrances to a lane cutting eye and carries out strengthening supporting, the long anchor cable for 9m of the six roots of sensation is drawn together in every package, and the spacing of adjacent two anchor cables is 1.2m.
Further, when cutting eye first time one-tenth lane, in inverse six first supports through with air return way, the beam length 20cm longer than the beam length of previous first support of rear first support, namely the beam length of the first steel I-beam of last six the first supports is respectively: 4.0m, 4.2 m, 4.4 m, 4.6 m, 4.8 m, 5.0m, one section of its section clear span that first time becomes lane to be positioned at last six the first supports broadens gradually, and changes phase with the beam length of last six the first supports.The section mouth of first time driving has been widened in this design, conveniently adopts the carrying of mining equipment etc., operation.
First, second described steel I-beam is 12 #steel I-beam, described hydraulic prop is DZ-2.8 hydraulic prop.
Each parameter in the present invention is the actual conditions such as, goaf scope large, roof cracking complicated for resource consolidation second mining geological condition of coal mine, optimizes through a large amount of technological demonstration repeatedly, fully investigation and a large amount of theoretical analysis and calculation.
The present invention is directed to the geology characteristic of resource consolidation second mining Mine Complicated, to the driving of working face open-off cut eye have devised adopt secondary Kuo Bangcheng lane pick enter new technology, effectively stop the accidents such as roof fall, complete the driving task that such mine working face cuts eye safely and efficiently.For under similar geological conditions, integrate the driving that mine fully mechanized coal face passes through the large section open*.off of little kiln failure zone, achieve valuable experience, found out the construction technology of complete set, be worthy to be popularized.
Accompanying drawing explanation
Fig. 1 is first time one-tenth lane profile in the inventive method.
Fig. 2 is that in the inventive method, secondary cuts a profile after expanding side.
Fig. 3 is that the inventive method first time tunneling construction and secondary expand side construction schematic diagram.
In figure: 1-cuts eye, 2-air intake crossheading, 3-air return way, 4-metal mesh sheet, 5-first steel I-beam, 6-monomer liquid compression leg, 7-gallows timber, 8-second steel I-beam, 9-anchor cable.
Detailed description of the invention
Below in conjunction with accompanying drawing, the invention will be further described:
As shown in Figures 1 to 3, a kind of second mining mine fully mechanized coal face cuts eye driving and supporting method thereof, it is characterized in that: driving to cut eye 1 section configuration be rectangle, cut eye 1 clear height 2.5m, clear span 6.2m; Cut eye 1 and tunnel employing secondary expansion side Driving technique, driving coal breakage mode is all manual pneumatic pick coal breakage, through with air return way 3 at air intake crossheading 2 first light section driving, then brush large exploitation side coal side is to designing width, concrete steps are: the first time of a) carrying out cutting eye 1 by air intake crossheading 2 to air return way 3 becomes lane, first time becomes lane section configuration to be rectangle, requires that one-tenth lane clear height 2.5m, clear span are 4m for the first time; During supporting, metal mesh sheet 4 by the first stent support is laid by top side, first support adopts first steel I-beam 5 of long 4m, supported by monomer liquid compression leg 6, one beam four post supporting, the two ends of the first steel I-beam 5 respectively support the hydraulic prop 6 of two spacing 1m, and between the first steel I-beam 5 and metal mesh sheet 4, the back of the body is real gallows timber 7, and the spacing of adjacent two first supports is 0.5m; First time becomes lane from air intake crossheading 2, and first time installs first the first support when digging footage reaches 2m, and later every drilling depth 1.5m just installs first support, by that analogy, until first time one-tenth lane completes; B) from air intake crossheading 2, carry out expansion side along first time Cheng Xiang direction, clear height 2.5m, clear span 2.2m, make final eye 1 clear span of cutting reach 6.2m; During supporting, metal mesh sheet 4 by the second stent support is laid by top side, second support adopts second steel I-beam 8 of long 2.8m, supported by monomer liquid compression leg 6, one beam three post supporting, the two ends of the second steel I-beam 8 and centre position respectively support a hydraulic prop 6, and between the second steel I-beam 8 and metal mesh sheet 4, the back of the body is real gallows timber 7; During concrete supporting, the first steel I-beam 5 that the first support is close to by second steel I-beam 8 of the second support installs, and the lap length of the second steel I-beam 8 and the first steel I-beam 5 is 0.6m, expand side from air intake crossheading 2, expand when side drilling depth reaches 2m and install first the second support, every drilling depth 1.5m just installs second support later, by that analogy, complete until expand side, what form clear span 6.2m cuts eye 1; C) complete and cut after eye 1 constructs, the top board at two entrances to a lane cutting eye 1 is made a call to row's anchor cable 9 respectively and carries out strengthening supporting, the long anchor cable 9 for 9m of the six roots of sensation is drawn together in every package, and the spacing of adjacent two anchor cables 9 is 1.2m.
During concrete enforcement, when cutting eye 1 first time one-tenth lane, in inverse six first supports through with air return way 3, the beam length 20cm longer than the beam length of previous first support of rear first support, namely the beam length of the first steel I-beam 5 of last six the first supports is respectively: 4.0m, 4.2 m, 4.4 m, 4.6 m, 4.8 m, 5.0m, one section of its section clear span that first time becomes lane to be positioned at last six the first supports broadens gradually, and changes phase with the beam length of last six the first supports.
First, second described steel I-beam 5,8 is 12 #steel I-beam, described hydraulic prop 6 is DZ-2.8 hydraulic prop.

Claims (3)

1. second mining mine fully mechanized coal face cuts eye driving and a supporting method thereof, it is characterized in that: driving to cut eye (1) section configuration be rectangle, cut eye (1) clear height 2.5m, clear span 6.2m; Cutting eye (1) driving adopts secondary to expand side Driving technique, driving coal breakage mode is all manual pneumatic pick coal breakage, through with air return way (3) at air intake crossheading (2) first light section driving, then brush large exploitation side coal side is to designing width, concrete steps are: the first time of a) carrying out cutting eye (1) by air intake crossheading (2) to air return way (3) becomes lane, first time becomes lane section configuration to be rectangle, requires that one-tenth lane clear height 2.5m, clear span are 4m for the first time; During supporting, metal mesh sheet (4) by the first stent support is laid by top side, first support adopts first steel I-beam (5) of long 4m, supported by monomer liquid compression leg (6), one beam four post supporting, the two ends of the first steel I-beam (5) respectively support the monomer liquid compression leg (6) of two spacing 1m, and between the first steel I-beam (5) and metal mesh sheet (4), the back of the body is real gallows timber (7), and the spacing of adjacent two first supports is 0.5m; First time becomes lane from air intake crossheading (2), and first time installs first the first support when digging footage reaches 2m, and later every drilling depth 1.5m just installs first support, by that analogy, until first time one-tenth lane completes; B) from air intake crossheading (2), carry out expansion side along first time Cheng Xiang direction, clear height 2.5m, clear span 2.2m, make final eye (1) clear span of cutting reach 6.2m; During supporting, metal mesh sheet (4) by the second stent support is laid by top side, second support adopts second steel I-beam (8) of long 2.8m, supported by monomer liquid compression leg (6), one beam three post supporting, the two ends of the second steel I-beam (8) and centre position respectively support a monomer liquid compression leg (6), and between the second steel I-beam (8) and metal mesh sheet (4), the back of the body is real gallows timber (7); During concrete supporting, the first steel I-beam (5) that the first support is close to by second steel I-beam (8) of the second support installs, and the lap length of the second steel I-beam (8) and the first steel I-beam (5) is 0.6m, expand side from air intake crossheading (2), expand when side drilling depth reaches 2m and install first the second support, every drilling depth 1.5m just installs second support later, by that analogy, complete until expand side, what form clear span 6.2m cuts eye (1); C), after completing and cutting eye (1) construction, the top board at two entrances to a lane cutting eye (1) is made a call to row's anchor cable (9) respectively and carries out strengthening supporting, the long anchor cable (9) for 9m of the six roots of sensation is drawn together in every package, and the spacing of adjacent two anchor cables (9) is 1.2m.
2. second mining mine fully mechanized coal face according to claim 1 cuts eye driving and supporting method thereof, it is characterized in that: when cutting eye (1) first time one-tenth lane, in inverse six first supports through with air return way (3), the beam length 20cm longer than the beam length of previous first support of rear first support, namely the beam length of first steel I-beam (5) of last six the first supports is respectively: 4.0m, 4.2 m, 4.4 m, 4.6 m, 4.8 m, 5.0m, one section of its section clear span that first time becomes lane to be positioned at last six the first supports broadens gradually, and change phase with the beam length of last six the first supports.
3. second mining mine fully mechanized coal face according to claim 1 and 2 cuts eye driving and supporting method thereof, it is characterized in that: described first, second steel I-beam (5,8) is 12 #steel I-beam, described monomer liquid compression leg (6) is DZ-2.8 hydraulic prop.
CN201210557640.3A 2012-12-20 2012-12-20 Second mining mine fully mechanized coal face cuts eye driving and supporting method thereof CN103061771B (en)

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CN103321654B (en) * 2013-07-04 2016-02-24 中国矿业大学 The method of flexible air-bag process coal mine roadway roof collapse
CN103670426B (en) * 2013-12-31 2015-11-11 四川川煤华荣能源股份有限公司花山煤矿 High inclination-angle, large-section roadway construction method
CN104153790B (en) * 2014-07-29 2016-04-13 开滦(集团)有限责任公司林南仓矿业分公司 Coal-face cuts ramus ophthalmicus protection structure and supporting method thereof
CN104265319B (en) * 2014-09-15 2017-06-16 中国神华能源股份有限公司 A kind of construction method that eye is cut for constructing
CN104863599B (en) * 2015-05-15 2017-10-27 辽宁鑫丰矿业(集团)有限公司 Fully-mechanized mining working synchronously expands side installation method and support system
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