CN105422172A - Waste rock bag roadside support method for anchoring low coal seam with strong roof - Google Patents

Waste rock bag roadside support method for anchoring low coal seam with strong roof Download PDF

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Publication number
CN105422172A
CN105422172A CN201510996725.5A CN201510996725A CN105422172A CN 105422172 A CN105422172 A CN 105422172A CN 201510996725 A CN201510996725 A CN 201510996725A CN 105422172 A CN105422172 A CN 105422172A
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CN
China
Prior art keywords
bag
packing
roadside
road
spoil
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201510996725.5A
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Chinese (zh)
Inventor
段会强
郭忠平
王磊
谢文武
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Shandong University of Science and Technology
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Shandong University of Science and Technology
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shandong University of Science and Technology filed Critical Shandong University of Science and Technology
Priority to CN201510996725.5A priority Critical patent/CN105422172A/en
Publication of CN105422172A publication Critical patent/CN105422172A/en
Pending legal-status Critical Current

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Classifications

    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21FSAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
    • E21F15/00Methods or devices for placing filling-up materials in underground workings
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21FSAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
    • E21F15/00Methods or devices for placing filling-up materials in underground workings
    • E21F15/02Supporting means, e.g. shuttering, for filling-up materials

Abstract

The invention discloses a waste rock bag roadside support method for anchoring low coal with seam strong roof. The waste rock bag roadside support method comprises a top cut round log supporting column part and an 'obturator + top contracted squared timber' part, wherein the top cut round log supporting column is arranged on the goaf side of a roadside packing body; the roadside packing body consists of waste rock bag bodies, fine particle bag bodies and plastic double resisting nets, the squared timber is adopted for top contract after the obturator is built; the obturator after being compacted is reinforced by an 'anchor rod + reinforcing steel ladder' support; the reinforcing steel ladder and a roadway top plate reinforcing steel ladder are in a bridging connection. According to the waste rock bag roadside support method disclosed by the invention, the round log is adopted as a top cut supporting column, and the waste rock bag bodies, the clay bag bodies and the plastic double resisting nets are selected to build the roadside packing bodies; the squared timber is adopted for top contracting; the 'anchor rod + reinforcing steel ladder' support is utilized for reinforcing the obturator; the waste rock bag roadside support method disclosed by the invention is well adapted to the roof strata movement, and the stability of the obturator and a roadway is improved.

Description

Tight roof girdle anchoring spoil bag roadside support method
Technical field
The present invention relates to a kind of girdle gob side entry retaining roadside support method, particularly relate to a kind of tight roof girdle anchoring spoil bag roadside support method.
Background technology
Gob side entry retaining, as a kind of Green Mining Technology, obtains a wide range of applications in China, and it can rational exploitation coal resources, alleviates coal mine excavation and to continue anxiety, extend mine service-life, thus have great economic implications.Good roadside packing method should possess the advantages such as filler wide material sources, enough non-deformabilities, stronger stability, construction technology are simple, safe and reliable, economical rationality.Current roadside support majority adopts mechanization monolithic to build strong concrete as obturation, but in gob side entry retaining, if select the little filler of the densers such as concrete, deformability to do roadside support, easily cause obturation stress raisers, more easily produce destruction, and the fillers such as concrete costly, many, the complicated construction technique of corollary equipment, generation dust large, should use be limited.
Therefore this area be badly in need of a kind of safe and efficient, technique is simple, speed of application is fast, the excellent roadside support method of economy.
Summary of the invention
For above-mentioned requirements, the object of the present invention is to provide a kind of tight roof girdle anchoring spoil bag roadside support method, it adopts round log pillar to do breaking-off timber, utilize plastics dual anti-net parcel spoil bag and clay bag to construct road-in packing, adopt the lumps of wood to connect top, utilize " anchor pole+steel bar ladder " to reinforce obturation, can under the prerequisite guaranteeing roadway surrounding rock rational cross section, reduce filling cost, simplify filling process, improve operating environment.
Its technical solution comprises:
A kind of tight roof girdle anchoring spoil bag roadside support method, the suspension device adopted comprises breaking-off timber and road-in packing two parts,
Described road-in packing wraps up roadside packing bag by plastics dual anti-net and forms, described roadside packing bag comprises spoil bag and fine particle bag, be loaded with the spoil of some in described spoil bag, in fine particle bag, be loaded with stemming or the clay of some;
Described supporting method comprises the following steps:
The first step, arranges breaking-off timber at road-in packing along empty side;
Second step, in lane, plastics dual anti-net is laid in the bottom surface in other district to be filled, the size of plastics dual anti-net is greater than the bottom surface in other district to be filled, lane, spoil bag is laid in the plastics dual anti-net in other district to be filled, described lane, and with the gap between fine particle bag filling waste rock bag, assemble, by plastics dual anti-net remainder reflexed to filling bag upper surface close to stopping during top board at described roadside packing bag, tiling also compacting, road-in packing has assembled;
3rd step, arranges and connects real part part, fully connect real top board to enable described obturation between road-in packing and top board;
4th step, reinforces the obturation of side, tunnel.
Described breaking-off timber is top board can be made to cut off and the round log of restriction road-in packing lateral displacement.
The described real part part that connects is the lumps of wood, and the vertical distance of road-in packing and top board is 0.1m.
Preferably, by adopting the obturation of " anchor pole+steel bar ladder " supporting to side, tunnel to reinforce, wherein, anchor pole selects full thread steel equal strength anchor rod.
Compared with CN203296778U, difference of the present invention is:
Other waste pack inboard, lane is provided with cuts tip circle wooden prop, the other spoil bag in lane, clay bag adopt plastics dual anti-net parcel, the lumps of wood is adopted to connect top, and the filled wall after assembling can carry alone, need not outside filled wall sprayed mortar spray-up and roadside support structure is additionally set in reserved tunnel, the present invention has the advantage that construction technology is simple, expense is more economized.
Compared with prior art, the invention has the advantages that:
(1) filler wide material sources, do not need the corollary equipment of purchasing price costliness, and filling cost reduces about 70%;
(2) road-in packing arranges breaking-off timber and can either realize cutting top effect to goaf top plate along empty side, also can control the lateral deformation of obturation simultaneously;
(3) wrap spoil bag and clay bag by plastics dual anti-net, the inhomogeneous deformation between bag can be reduced, adopt " anchor pole+steel bar ladder " to reinforce obturation, enhance globality and the stability of obturation;
(4) gap between spoil bag adopts clay bag to carry out filling, decreases goaf air leaking;
(5) adopt and connect real part part and decrease gap between obturation and top board, improve the preliminary bracing intensity of obturation, and the yield supporting effect of middle and later periods can be realized.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention is elaborated:
Fig. 1 is the profile of roadside support of the present invention;
In figure, 1, roadside packing bag, 2, plastics dual anti-net, 3, anchor pole, 4, steel bar ladder, 5, connect the top lumps of wood, 6, round log pillar.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is described in further details.
Shown in composition graphs 1, the suspension device that supporting method of the present invention adopts comprises breaking-off timber and road-in packing two parts, the preferred breaking-off timber of the present invention is round log pillar 6, and the preferred road-in packing of the present invention wraps up spoil bag and clay bag 1 by plastics dual anti-net 2 and constructs and form.
Road-in packing is used for carrying out filling to other district to be filled, lane, road-in packing is made up of roadside packing bag 1 (comprising spoil bag, fine particle bag) and the plastics dual anti-net 2 be laid on bottom spoil bag, be loaded with the spoil of some in spoil bag, in fine particle bag, be loaded with stemming or the clay of some;
Roadside support method of the present invention comprises the following steps:
Arrange along road-in packing along empty side and cut tip circle wooden prop 6, breaking-off timber spacing 1.0m;
Assemble filling bag and carry out roadside packing, first the base plate in other district to be filled, lane is cleared up, after cleaning to the hard end, in the base plate paving plastics dual anti-net 2 in district to be filled, the size of plastics dual anti-net is greater than the bottom surface in other district to be filled, lane, spoil bag is laid in the plastics dual anti-net in district to be filled, and with fine particle bag, the gap between spoil bag is filled, filling bag stops when assembling certain altitude, by remainder plastics dual anti-net reflexed to filling bag upper surface, tiling also compacting, road-in packing has assembled;
Arrange between road-in packing and top board and connect the top lumps of wood 5, fully connect real top board to make obturation;
" anchor pole 3+ steel bar ladder 4 " supporting is adopted to reinforce side, tunnel obturation.
Elaborate below in conjunction with specific embodiment.
Embodiment 1:
With the advance of the face, cut tip circle wooden prop 6 at road-in packing along empty side layout, strut diameter is not less than 150mm, is highly not less than 1200mm, spacing 1.0m, adopts timber wedge to connect reality between pillar and top board, and breaking-off timber is that permanent support does not withdraw;
Then filling bag is assembled, roadway floor is first cleared up to the hard end before assembling, subsequently in roadway floor paving plastics dual anti-net 2, remainder is spooled, tie mouth with knitting bagged spoil to carry out assembling work, gap clay bag between spoil bag carries out filling to reduce goaf air leaking, obturation lateral surface vertical top base plate after assembling becomes a plane, obturation stowing interval 2.0m, filling width 2.5m, stay lanewidth degree identical with original span length, when assembling height apart from stopping during top board 0.1m building bag, smooth filling bag, remaining plastics dual anti-net reverse reflex is laid in filling bag upper surface and compacting, then along filling width, the space between top board and obturation arranges that 4 lumps of wood 5 connect real top board, the long 1.9m of the lumps of wood, wide 0.15m, high 0.1m, lumps of wood center to center distance 750mm, first lumps of wood is apart from obturation lateral surface 100mm.
After gob side entry retaining top board revolution sinking compacting obturation, often arrange at obturation vertical direction and put 2 anchor poles 3, anchor pole is installed perpendicular to waste filling band lateral surface, and join steel bar ladder 4 and reinforce, bolt interval is 800mm × 2000mm, and wherein the 1st anchor pole is apart from top board 300mm, and every root anchor pole 2 MSCKb28/33 resin anchoring agents carry out anchoring, anchored force is not less than 70KN, and pre-fastening moment is not less than 300Nm.
Above-described embodiment is only to an explanation of the present invention, and and non-limiting, breaking-off timber all can be optimized according to on-site actual situations with connecing top lumps of wood specification, obturation actual height and reinforcing bolt interval etc., further, the parameter such as stowing interval, filling width also can adjust according to actual conditions.
Those skilled in the art are under enlightenment of the present invention, and other fine particle that can reduce goaf air leaking drawn also should within protection scope of the present invention.

Claims (4)

1. a tight roof girdle anchoring spoil bag roadside support method, the suspension device adopted comprises breaking-off timber and road-in packing two parts, it is characterized in that:
Described road-in packing wraps up roadside packing bag by plastics dual anti-net and forms, described roadside packing bag comprises spoil bag and fine particle bag, be loaded with the spoil of some in described spoil bag, in fine particle bag, be loaded with stemming or the clay of some;
Described supporting method comprises the following steps:
The first step, arranges breaking-off timber at road-in packing along empty side;
Second step, in lane, plastics dual anti-net is laid in the bottom surface in other district to be filled, the size of plastics dual anti-net is greater than the bottom surface in other district to be filled, lane, spoil bag is laid in the plastics dual anti-net in other district to be filled, described lane, and with the gap between fine particle bag filling waste rock bag, assemble, by plastics dual anti-net remainder reflexed to filling bag upper surface close to stopping during top board at described roadside packing bag, tiling also compacting, road-in packing has assembled;
3rd step, arranges and connects real part part, fully connect real top board to enable described obturation between road-in packing and top board;
4th step, reinforces the obturation of side, tunnel.
2. tight roof girdle anchoring spoil bag roadside support method according to claim 1, is characterized in that: described breaking-off timber is top board can be made to cut off and the round log of restriction road-in packing lateral displacement.
3. tight roof girdle anchoring spoil bag roadside support method according to claim 1, is characterized in that: described in connect real part part be the lumps of wood, the vertical distance of road-in packing and top board is 0.1m.
4. tight roof girdle anchoring spoil bag roadside support method according to claim 1, is characterized in that: adopt the obturation of " anchor pole+steel bar ladder " supporting to side, tunnel to reinforce, wherein, anchor pole selects full thread steel equal strength anchor rod.
CN201510996725.5A 2015-12-25 2015-12-25 Waste rock bag roadside support method for anchoring low coal seam with strong roof Pending CN105422172A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510996725.5A CN105422172A (en) 2015-12-25 2015-12-25 Waste rock bag roadside support method for anchoring low coal seam with strong roof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510996725.5A CN105422172A (en) 2015-12-25 2015-12-25 Waste rock bag roadside support method for anchoring low coal seam with strong roof

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107449667A (en) * 2017-09-06 2017-12-08 太原理工大学 A kind of experimental provision and method of testing for being used to test gob side entry retaining stability
WO2019140813A1 (en) * 2018-01-18 2019-07-25 山东科技大学 Roadway forming method by roadway widening and tunneling and filling gangue paste in thick coal seam

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101967992A (en) * 2010-09-17 2011-02-09 山东新矿赵官能源有限责任公司 Different-strength bearing roadside filler for pillar-free mining of thin coal bed
CN102278140A (en) * 2011-07-05 2011-12-14 徐州贝壳迈宁矿业科技有限公司 Gob-side entry retaining method for solid filling coal mining building gangue wall
CN102296987A (en) * 2011-09-02 2011-12-28 中国矿业大学 Roadside packing gob-side entry retaining soft medium top filling method
CN102678123A (en) * 2012-05-22 2012-09-19 山东科技大学 Gob-side entry retaining method for thin coal layer under hard limestone top plate
CN204646313U (en) * 2015-05-27 2015-09-16 四川川煤华荣能源股份有限公司小宝鼎煤矿 For the interstitital texture in Xiang Bangliu lane

Patent Citations (5)

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Publication number Priority date Publication date Assignee Title
CN101967992A (en) * 2010-09-17 2011-02-09 山东新矿赵官能源有限责任公司 Different-strength bearing roadside filler for pillar-free mining of thin coal bed
CN102278140A (en) * 2011-07-05 2011-12-14 徐州贝壳迈宁矿业科技有限公司 Gob-side entry retaining method for solid filling coal mining building gangue wall
CN102296987A (en) * 2011-09-02 2011-12-28 中国矿业大学 Roadside packing gob-side entry retaining soft medium top filling method
CN102678123A (en) * 2012-05-22 2012-09-19 山东科技大学 Gob-side entry retaining method for thin coal layer under hard limestone top plate
CN204646313U (en) * 2015-05-27 2015-09-16 四川川煤华荣能源股份有限公司小宝鼎煤矿 For the interstitital texture in Xiang Bangliu lane

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周保精等: "小宽高比充填体沿空留巷稳定性研究", 《煤炭学报》 *
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107449667A (en) * 2017-09-06 2017-12-08 太原理工大学 A kind of experimental provision and method of testing for being used to test gob side entry retaining stability
WO2019140813A1 (en) * 2018-01-18 2019-07-25 山东科技大学 Roadway forming method by roadway widening and tunneling and filling gangue paste in thick coal seam

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