CN103321654B - The method of flexible air-bag process coal mine roadway roof collapse - Google Patents

The method of flexible air-bag process coal mine roadway roof collapse Download PDF

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Publication number
CN103321654B
CN103321654B CN201310277012.4A CN201310277012A CN103321654B CN 103321654 B CN103321654 B CN 103321654B CN 201310277012 A CN201310277012 A CN 201310277012A CN 103321654 B CN103321654 B CN 103321654B
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CN
China
Prior art keywords
bag
girder steel
fall region
flexible air
roof fall
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Application number
CN201310277012.4A
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Chinese (zh)
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CN103321654A (en
Inventor
张农
阚甲广
王彬
薛俊华
李桂臣
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中国矿业大学
淮南矿业(集团)有限责任公司
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Priority to CN201310277012.4A priority Critical patent/CN103321654B/en
Publication of CN103321654A publication Critical patent/CN103321654A/en
Application granted granted Critical
Publication of CN103321654B publication Critical patent/CN103321654B/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
    • E21D11/04Lining with building materials
    • E21D11/10Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D15/00Props; Chocks, e.g. made of flexible containers filled with backfilling material
    • E21D15/48Chocks or the like
    • E21D15/483Chocks or the like made of flexible containers, e.g. inflatable, with or without reinforcement, e.g. filled with water, backfilling material or the like

Abstract

A method for flexible air-bag process coal mine roadway roof collapse, in fall of ground processing procedure, needs empty top operation, ascend operation, construction safety is difficult to the problems such as guarantee, first below roof fall region, set up girder steel, temporary lining is provided, ensure the safety of operating area; On girder steel, place flexible air-bag afterwards and inflating pressure, ensure and connect top fast; Finally by the Grouting Pipe of constructing in advance to the slip casting of roof fall region, reinforce roof fall region and neighbouring country rock thereof, fast, safely, reliably process coal mine roadway roof collapse.Its method is simple, easy to operate, effective, for construction safety provides reliable guarantee.

Description

The method of flexible air-bag process coal mine roadway roof collapse

Technical field

The present invention relates to colliery treatment of roof collapse technical field, especially a kind of method of flexible air-bag process coal mine roadway roof collapse.

Background technology

Roof collapse is one of five large disasters of coal production, and roof fall region back is dealt with improperly, again collapsing of top board easily occurs and emits, and causes casualties and the damage of equipment, affects the safety in production in colliery.

At present, the method for home and abroad colliery process fall of ground mainly contains: Bolt net and jet note method, metallic support grillage method, wedging method etc.Three kinds of methods all need constructor's operation under the back of non-support for a long time, usual roof fall region back lithology is poor, loose crushing, self-bearing capacity are poor, roof fall again very easily occurs, causes secondary disaster, therefore the safety of constructor is difficult to ensure.Simultaneously when roof collapse is higher, need to set up scaffold and carry out ascend operation, complex procedures, construction speed is slow, further increases the insecurity of construction.The employing such as metallic support grillage method, wedging method timber carries out connecing to be determined, and it is unreal that existence connects top, and timber holds perishable problem in wet condition.Therefore a kind of simple, safe and reliable coal mine roadway roof collapse processing method is badly in need of.

Summary of the invention

Technical problem: the object of the invention is the deficiency overcome in prior art, provides a kind of simple to operate, the method for the flexible air-bag process coal mine roadway roof collapse of safety, fast processing fall of ground accident.

Technical scheme: the method for flexible air-bag process coal mine roadway roof collapse of the present invention, comprises the steps:

(1) set up many girder steels at roof fall region top board along tunnel axially spaced-apart, the length of girder steel is equal with span length, each employing shore supports below the two ends of girder steel;

(2) 1m place outside the top board of roof fall region, to roof fall region construction injected hole install Grouting Pipe;

(3) flexible air-bag is sent into roof fall region from girder steel interstitial spaces, on girder steel, mount wire lath afterwards, and to flexible air-bag inflating pressure, keep air pressure at 0.1 ~ 0.3MPa;

(4) on the complete girder steel of construction and wire lath, jet thickness is the concrete of 100 ~ 200mm, forms grouting layer;

(5) after concrete setting, carry out slip casting by Grouting Pipe to roof fall region and neighbouring country rock, when grouting pressure reaches 1.0 ~ 2.0MPa, after voltage stabilizing 3 ~ 5min, stop slip casting.

Spacing between many girder steels of described interval erection is 200-300mm; Described pillar is wood point post or hydraulic prop; The protruded length of described Grouting Pipe in roof fall region is 100 ~ 400mm, and the spacing between Grouting Pipe is 800 ~ 2000mm; The quantity of described flexible air-bag is determined according to the volume relationship of roof fall region and flexible air-bag; Described girder steel is mining channel-section steel or i iron; Described grouting serous fluid selects cement grout or chemical grout.

Beneficial effect: the present invention is directed in fall of ground processing procedure, need empty top operation, ascend operation, construction safety is difficult to the problems such as guarantee, first below roof fall region, sets up girder steel, provides temporary lining, ensures the safety of operating area; On girder steel, place flexible air-bag afterwards and inflating pressure, ensure and connect top fast; Finally by the Grouting Pipe of constructing in advance to the slip casting of roof fall region, reinforce roof fall region and neighbouring country rock thereof, fast, safely, reliably process coal mine roadway roof collapse.In whole work progress, do not need long-time operation under the top board of inbreak region, do not need ascend operation simultaneously, can fast, safe, reliably process coal mine roadway roof collapse.Its method is simple, and speed is fast, easy to operate, effective, has practicality widely in the art.

Accompanying drawing explanation

Fig. 1 is flexible air-bag process coal mine roadway roof collapse method schematic diagram of the present invention;

Fig. 2 is I-I sectional drawing of Fig. 1.

In figure: 1-tunnel, 2-Grouting Pipe, 3-girder steel, 4-roof fall region, 5-flexible air-bag, 6-wire lath, 7-pulp layer, 8-pillar.

Detailed description of the invention

Below in conjunction with accompanying drawing, one embodiment of the present of invention are further described:

Flexible air-bag process coal mine roadway roof collapse method of the present invention, concrete steps are as follows:

(1) set up many girder steels 3 at roof fall region 4 top board along tunnel 1 axially spaced-apart, girder steel 3 length is equal with tunnel 1 width, and girder steel spacing is 200-300mm, and described girder steel 3 is for commonly using channel-section steel or i iron in colliery; Below girder steel 3 two ends, each employing pillar 8 supports;

(2) 1m place outside the top board of roof fall region 4, injected hole of constructing to roof fall region 4, and Grouting Pipe 2 is installed; The protruded length of described Grouting Pipe 2 in roof fall region 4 is 100 ~ 400mm, and the spacing between Grouting Pipe 2 is 800 ~ 2000mm;

(3) flexible air-bag 5 is sent into roof fall region 4 from girder steel 3 interstitial spaces, flexible air-bag 5 quantity is determined according to the volume relationship of roof fall region and flexible air-bag 5, on girder steel 3, mount wire lath 6 afterwards, and to flexible air-bag 5 inflating pressure, keep air pressure at 0.1 ~ 0.3MPa; Described flexible air-bag 5 is mining flexible inflatable air bag;

(4) on the complete girder steel 3 of construction and wire lath 6, jet thickness is the concrete of 100 ~ 200mm, forms grouting layer 7;

(5) after concrete setting, carry out slip casting by Grouting Pipe 2 to roof fall region 4 and neighbouring country rock, grouting serous fluid selects cement grout or chemical grout, when grouting pressure reaches 1.0 ~ 2.0MPa, stop slip casting after voltage stabilizing 3 ~ 5min, complete the supporting in roof fall region 4.

Claims (1)

1. a method for flexible air-bag process coal mine roadway roof collapse, is characterized in that comprising the steps:
(1) many girder steels (3) are set up at roof fall region (4) top board along tunnel (1) axially spaced-apart, the length of girder steel (3) is equal with tunnel (1) width, girder steel spacing is 200-300mm, and described girder steel (3) is for commonly using channel-section steel or i iron in colliery; Below the two ends of girder steel (3), each employing pillar (8) supports;
(2) 1m place outside roof fall region (4) top board, to roof fall region (4) construction injected hole, and installs Grouting Pipe (2); Described Grouting Pipe (2) is 100 ~ 400mm at the protruded length of roof fall region (4), and the spacing between Grouting Pipe (2) is 800 ~ 2000mm;
(3) flexible air-bag (5) is sent into roof fall region (4) from girder steel (3) interstitial spaces, flexible air-bag (5) quantity is determined according to the volume relationship of roof fall region and flexible air-bag (5), wire lath (6) is mounted afterwards on girder steel (3), and to flexible air-bag (5) inflating pressure, keep air pressure at 0.1 ~ 0.3MPa; Described flexible air-bag 5 is mining flexible inflatable air bag;
(4) on the complete girder steel (3) of construction and wire lath (6), jet thickness is the concrete of 100 ~ 200mm, forms grouting layer (7);
(5) after concrete setting, carry out slip casting by Grouting Pipe (2) to roof fall region (4) and neighbouring country rock, when grouting pressure reaches 1.0 ~ 2.0MPa, after voltage stabilizing 3 ~ 5min, stop slip casting, complete the supporting in roof fall region 4;
Described pillar (8) is wood point post or hydraulic prop;
Described grouting serous fluid selects cement grout or chemical grout.
CN201310277012.4A 2013-07-04 2013-07-04 The method of flexible air-bag process coal mine roadway roof collapse CN103321654B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201310277012.4A CN103321654B (en) 2013-07-04 2013-07-04 The method of flexible air-bag process coal mine roadway roof collapse

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201310277012.4A CN103321654B (en) 2013-07-04 2013-07-04 The method of flexible air-bag process coal mine roadway roof collapse
PCT/CN2013/081724 WO2015000210A1 (en) 2013-07-04 2013-08-19 Method for processing roof collapse of coal mine roadway by using flexible air bag

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CN103321654A CN103321654A (en) 2013-09-25
CN103321654B true CN103321654B (en) 2016-02-24

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WO (1) WO2015000210A1 (en)

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CN103758533B (en) * 2014-01-06 2015-12-30 中国矿业大学 A kind of high-low pressure integratedization roadway grouting reinforcement means
CN103726859B (en) * 2014-01-27 2015-10-07 河南理工大学 Air filling type mine rubber support
CN104500090A (en) * 2014-11-25 2015-04-08 兖州煤业股份有限公司 Method for treating coal-mine roadway roof caving by roof filling through foam-material filler
CN104963688B (en) * 2015-06-06 2017-01-18 山东黄金矿业(莱州)有限公司三山岛金矿 Prevention and control method for falling of pumice at roof and two slopes of stope in medium-long hole mining
CN105507927B (en) * 2015-12-30 2017-11-17 中铁一局集团有限公司 Air bag inner model mobile formwork and Tunnel construction of shotcrete method
CN106968676B (en) * 2017-03-27 2019-12-17 山西潞安环保能源开发股份有限公司 Method for tunneling through cavity
CN106884667A (en) * 2017-04-07 2017-06-23 天津轨道交通集团有限公司 A kind of section of jurisdiction supporting apparatus for shield tunnel accident rescue
CN107687348A (en) * 2017-09-11 2018-02-13 开滦能源化工股份有限公司吕家坨矿业分公司 With the method for flexible air-bag processing roof of coal face accident
CN107654238A (en) * 2017-09-15 2018-02-02 中国矿业大学 A kind of processing method for having dug fall of ground
CN109653765B (en) * 2019-02-12 2020-10-09 三峡大学 Warehouse-separated lining pressure relief supporting structure and method for various fillers
CN109931077A (en) * 2019-03-29 2019-06-25 中南大学 Support system and its construction method for Segment rehabilitation
CN110219685B (en) * 2019-07-08 2020-09-18 哈密豫新能源产业研究院有限责任公司 Roof reinforcing grouting equipment and grouting method
CN111305872B (en) * 2020-03-10 2020-12-01 天津大学 TBM shield tunnel segment and operation method thereof

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