CN106703816A - Hole cutting and slope expansion construction technology for fully-mechanized working face of complex coal bed - Google Patents

Hole cutting and slope expansion construction technology for fully-mechanized working face of complex coal bed Download PDF

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Publication number
CN106703816A
CN106703816A CN201611208367.8A CN201611208367A CN106703816A CN 106703816 A CN106703816 A CN 106703816A CN 201611208367 A CN201611208367 A CN 201611208367A CN 106703816 A CN106703816 A CN 106703816A
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CN
China
Prior art keywords
original
coal
construction technology
cutting
sides
Prior art date
Application number
CN201611208367.8A
Other languages
Chinese (zh)
Inventor
范勇军
刘祥
蒋仕柱
田苗
Original Assignee
四川川煤华荣能源股份有限公司
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Application filed by 四川川煤华荣能源股份有限公司 filed Critical 四川川煤华荣能源股份有限公司
Priority to CN201611208367.8A priority Critical patent/CN106703816A/en
Publication of CN106703816A publication Critical patent/CN106703816A/en

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Classifications

    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D11/00Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
    • E21D11/14Lining predominantly with metal
    • E21D11/15Plate linings; Laggings, i.e. linings designed for holding back formation material or for transmitting the load to main supporting members
    • E21D11/152Laggings made of grids or nettings
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D11/00Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
    • E21D11/14Lining predominantly with metal
    • E21D11/15Plate linings; Laggings, i.e. linings designed for holding back formation material or for transmitting the load to main supporting members
    • E21D11/155Laggings made of strips, slats, slabs or sheet piles
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D20/00Setting anchoring-bolts

Abstract

The invention discloses a hole cutting and slope expansion construction technology for a fully-mechanized working face of a complex coal bed, and relates to the technical field of coal mining. The construction technology solves the problems that an existing mining method is low in efficiency and safety coefficient, high in labor intensity and long in construction period, and safety production and rapid installation of cut holes are not facilitated. The construction technology includes the steps: firstly, respectively performing slope expansion on two sides of an original hole cutting area by the aid of a shipment system of an original cut hole; secondly, performing undercutting for an area below the original hole cutting area; finally respectively performing undercutting for two sides of the area below the original hole cutting area until hole cutting and slope expansion are finished. Simultaneous slope expansion of two sides of the original hole cutting area are performed, double drilling machines can parallelly work on the working surface, exposed time of roofs is shortened, working efficiency is improved, workload manually sweeping coat is reduced, and labor intensity of workers is relieved. Compared with a past construction method which is characterized in that roof brushing is firstly performed, slope expansion is performed, and upper coal is reserved, secondary supporting caused by roof brushing is avoided, and coal mining cost is reduced.

Description

Complicated seam point of cutting of coal face expands side construction technology

Technical field

Expand side construction technology the present invention relates to coal-mining technique field, especially a kind of complicated seam point of cutting of coal face.

Background technology

For high inclination-angle, the coal seam of high seam, and for complicated seam, using full-seam mining fully mechanized mining method, eye expansion is cut Side exploiting field is carried out according to the method for once expanding side from top to bottom, once undercut.This method efficiency of construction is relatively low, labour intensity compared with Greatly, relatively costly, while extend cutting an installation period, safety coefficient is low, is unfavorable for keeping the safety in production and cutting the Fast Installation of eye.

The content of the invention

The present invention provides a kind of complicated seam point of cutting of coal face and expands side construction technology, solves existing recovery method work efficiency Rate is relatively low, and labour intensity is larger, long in time limit, and safety coefficient is low, the problem of the Fast Installation for being unfavorable for keeping the safety in production and cut eye.

The technical solution adopted for the present invention to solve the technical problems is:Complicated seam point of cutting of coal face expands side construction Technique, comprises the following steps:

Step one, the shipment system of eye is cut using original carry out expansion side respectively in the both sides that original cuts Vitrea eye, and complete to expand side and need The support work wanted;

Step 2, the region cut to original below Vitrea eye undercut, and tunnel clear height is large enough to hold coal-winning machine;

Step 3, the both sides for cutting the region below Vitrea eye to original are undercuted, and the region below Vitrea eye are cut with original respectively It is cargo path, until completing to cut eye expansion helper's work.

Specifically, the width that the original cuts Vitrea eye is 2.2m.

Specifically, in step one, cycle operation progress is 0.8-2.0m.

Specifically, in step 2, tunnel clear height is not less than 3.5m.

It is further:In step one, side 3.4m is expanded in the both sides for cutting Vitrea eye in original respectively.

Moreover:In step one, the both sides for cutting Vitrea eye in original carry out expansion side respectively, and side 3.4m is expanded in wherein side, Opposite side also widens 1.0m as coal winning machine position in addition to side 3.4m is expanded.

The beneficial effects of the invention are as follows:It is same that complicated seam point of cutting of coal face expansion side construction technology cuts Vitrea eye both sides in original When expand side, be capable of achieving the double rig parallel operations of working face, reduce top board open-assembly time, improve operating efficiency.Simultaneously as both sides Expand side length simultaneously smaller, reduce the artificial workload for sweeping coal, reduce the labour intensity of workman.The present invention is using first expansion side Post-tensioning bottom mode, working face open-off cut eye along top board keep on file coal construct, first caunch as compared with the past expands afterwards side stay top coal construction, it is to avoid Secondary supporting problem caused by caunching, reduces mining costs.

Brief description of the drawings

Fig. 1 is that the present invention cuts tunnel section structure schematic diagram after side is expanded in Vitrea eye both sides (A areas) in original.

Fig. 2 is that the present invention cuts roadway support schematic diagram after side is expanded in Vitrea eye both sides (A areas) in original.

Fig. 3 is that the present invention cuts below Vitrea eye tunnel section structure schematic diagram after (B areas) undercuts in original.

Fig. 4 is that the present invention cuts below Vitrea eye roadway support schematic diagram after (B areas) undercuts in original.

Fig. 5 is present invention tunnel section structure schematic diagram after the both sides (C areas) that original cuts below Vitrea eye (B areas) undercut.

Parts, position and numbering in figure:Original cuts Vitrea eye 1, anchor cable 2, anchor pole 3, steel band 4, wire netting 5.In Fig. 1 to 5 The unit of size marking is mm.

Specific embodiment

The invention will be further described below in conjunction with the accompanying drawings.

Complicated seam point of cutting of coal face of the present invention expands side construction technology, and first, the shipment system for cutting eye using original exists The both sides that original cuts Vitrea eye 1 carry out expansion side respectively, and complete to expand the support work that side needs.As depicted in figs. 1 and 2, cycle operation Progress is 1m, and the width that original cuts Vitrea eye 1 is 2.2m, and the both sides that original cuts Vitrea eye 1 are respectively labeled as A areas, i.e., cutting going out for eye using original Goods system expands side 3.4m in A areas.Cycle operation progress is according to being 0.8-2.0m.The both sides for cutting Vitrea eye 1 in original carry out expansion side respectively, Wherein side 3.4m is expanded in side, and opposite side also widens 1.0m as coal winning machine position in addition to side 3.4m is expanded.Carry out expanding the institute that side needs There is support work, including supporting is carried out by anchor cable 2, anchor pole 3, including supporting is carried out by steel band 4, also including by wire netting 5 carry out supporting, and the arrangement of supporting is as depicted in figs. 1 and 2.

Secondly, the region that the lower section of Vitrea eye 1 is cut to original undercuts, and tunnel clear height is large enough to hold coal-winning machine.Such as Fig. 2 and Tu Shown in 3, mouth now of autotomying rises, and the 2.2m width range B areas that Vitrea eye 1 is cut to original undercut, and tunnel clear height is not less than 3.5m, To be large enough to hold coal-winning machine.

Finally, the both sides that the region of the lower section of Vitrea eye 1 is cut to original undercut respectively, i.e., to the both sides in B areas, or A areas Lower section is undercuted respectively, and cuts the region B areas of the lower section of Vitrea eye 1 as cargo path with original, until completing to cut eye expansion helper's work, such as Fig. 5 It is shown.

Claims (6)

1. complicated seam point of cutting of coal face expands side construction technology, it is characterised in that:Comprise the following steps:
Step one, the shipment system of eye is cut using original carry out expansion side respectively in the both sides that original cuts Vitrea eye, and complete to expand what side needed Support work;
Step 2, the region cut to original below Vitrea eye undercut, and tunnel clear height is large enough to hold coal-winning machine;
Step 3, the both sides for cutting the region below Vitrea eye to original undercut respectively, and cut region below Vitrea eye as goods with original Road, until completing to cut eye expansion helper's work.
2. complicated seam point of cutting of coal face as claimed in claim 1 expands side construction technology, it is characterised in that:The original is cut The width of Vitrea eye is 2.2m.
3. complicated seam point of cutting of coal face as claimed in claim 1 expands side construction technology, it is characterised in that:Step one In, cycle operation progress is 0.8-2.0m.
4. complicated seam point of cutting of coal face as claimed in claim 1 expands side construction technology, it is characterised in that:Step 2 In, tunnel clear height is not less than 3.5m.
5. the complicated seam point of cutting of coal face as described in Claims 1-4 any claim expands side construction technology, and it is special Levy and be:In step one, side 3.4m is expanded in the both sides for cutting Vitrea eye in original respectively.
6. complicated seam point of cutting of coal face as claimed in claim 5 expands side construction technology, it is characterised in that:Step one In, the both sides for cutting Vitrea eye in original carry out expansion side respectively, and side 3.4m is expanded in wherein side, and opposite side is also widened in addition to side 3.4m is expanded 1.0m is used as coal winning machine position.
CN201611208367.8A 2016-12-23 2016-12-23 Hole cutting and slope expansion construction technology for fully-mechanized working face of complex coal bed CN106703816A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201611208367.8A CN106703816A (en) 2016-12-23 2016-12-23 Hole cutting and slope expansion construction technology for fully-mechanized working face of complex coal bed

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201611208367.8A CN106703816A (en) 2016-12-23 2016-12-23 Hole cutting and slope expansion construction technology for fully-mechanized working face of complex coal bed

Publications (1)

Publication Number Publication Date
CN106703816A true CN106703816A (en) 2017-05-24

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CN201611208367.8A CN106703816A (en) 2016-12-23 2016-12-23 Hole cutting and slope expansion construction technology for fully-mechanized working face of complex coal bed

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11159275A (en) * 1997-11-28 1999-06-15 Nagatomo Shigeki Whale bone construction method of large cross-section tunnel
RU2167299C2 (en) * 1999-06-29 2001-05-20 Открытое акционерное общество по добыче угля "Воркутауголь" Method of mine working construction (versions)
CN102720504A (en) * 2012-06-13 2012-10-10 北京市公路桥梁建设集团有限公司 Double-side-wall-pilot-hole subsection bench cut method construction method
CN103233748A (en) * 2013-05-09 2013-08-07 安徽理工大学 Anchor mesh cable column combined supporting design method for expanding extra-large span open-off cut brush into lane
CN103670426A (en) * 2013-12-31 2014-03-26 四川川煤华荣能源股份有限公司花山煤矿 Large-inclination-angle and large-section roadway construction method
CN204140104U (en) * 2014-10-08 2015-02-04 四川川煤华荣能源股份有限公司太平煤矿 Soft medium-thickness seam big cross section open-off cut

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11159275A (en) * 1997-11-28 1999-06-15 Nagatomo Shigeki Whale bone construction method of large cross-section tunnel
RU2167299C2 (en) * 1999-06-29 2001-05-20 Открытое акционерное общество по добыче угля "Воркутауголь" Method of mine working construction (versions)
CN102720504A (en) * 2012-06-13 2012-10-10 北京市公路桥梁建设集团有限公司 Double-side-wall-pilot-hole subsection bench cut method construction method
CN103233748A (en) * 2013-05-09 2013-08-07 安徽理工大学 Anchor mesh cable column combined supporting design method for expanding extra-large span open-off cut brush into lane
CN103670426A (en) * 2013-12-31 2014-03-26 四川川煤华荣能源股份有限公司花山煤矿 Large-inclination-angle and large-section roadway construction method
CN204140104U (en) * 2014-10-08 2015-02-04 四川川煤华荣能源股份有限公司太平煤矿 Soft medium-thickness seam big cross section open-off cut

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
陈爱莲: "《公路工程施工现场管理人员业务细节大全丛书•施工员•隧道分册》", 31 January 2008 *

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Application publication date: 20170524

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