CN103147793B - Girdle roadside packing non chain pillar entryprotection method - Google Patents
Girdle roadside packing non chain pillar entryprotection method Download PDFInfo
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- CN103147793B CN103147793B CN201310056284.1A CN201310056284A CN103147793B CN 103147793 B CN103147793 B CN 103147793B CN 201310056284 A CN201310056284 A CN 201310056284A CN 103147793 B CN103147793 B CN 103147793B
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Abstract
The invention discloses a kind of girdle roadside packing non chain pillar entryprotection method, its support in mine gateway is on original bolting with wire mesh basis, complement anchor cable and set up hydraulic prop with strengthening supporting, and roadside support is the filling of high-water material pocket type.Two row's anchor poles are made a call to, to maintain the integrality of roof strata above obturation at obturation ceiling location; Wedge timber wedge between obturation and top board, guarantee that obturation connects top tight; Obturation is at the effect compacted under of chaste tree fragrant plant and filling bag.The present invention fills out has the advantages such as technique is simple, speed of application fast, stay lane effective, namely controlling roadway deformation well, encloses again goaf, effectively eliminating because leaking wind-induced spontaneous combustion in goaf hidden danger.
Description
Technical field
The present invention relates to a kind of girdle roadside packing non chain pillar entryprotection method, belong to the roadway support field in process of coal mining.
Background technology
Traditional district sublevel entry generally adopts reserved coal pillar to protect lane.Along with adopting dark increase, after adopting, ore deposit pressure manifests more and more violent, and width of chain pillar requires increasing, adds coal resources loss, and easily brings out coal mine rock burst.Adopt roadside packing non chain pillar entryprotection technology then can overcome the above problems.The feature of roadside packing non chain pillar entryprotection technology is embodied in: 1. eliminate protection pillar, improve coal recovery rate; 2. dig stope drift active workings less, alleviate the situation of coal mine excavation strained relations; 3. eliminate stress of coal pillar concentrate bring bump, coal the safety in production hidden danger such as outstanding and Coal Pillar Spontaneous Combustion.
China's roadside packing non chain pillar entryprotection technology mainly adopts the modes such as close standing props, grillage, concrete block and waste filling, there is the shortcoming such as stay the high and labour intensity of lane weak effect, cost large.
Summary of the invention
In order to solve the problems of the technologies described above, the invention provides a kind of girdle roadside packing non chain pillar entryprotection method, the method have construction technology simple, stay that lane speed is fast, labour intensity is low and the advantage such as filling effect is good.
The technology used in the present invention solution is:
A kind of girdle roadside packing non chain pillar entryprotection method, it comprises the following steps:
(1) back reinforce support: complement anchor cable in reserved tunnel and within first advance 20m;
(2) lame advanced supporting: set up hydraulic prop within first advance 20m in reserved tunnel;
(3) CONTROL OF STRATA MOVEMENT above obturation: after the advance of the face, beats anchor pole at pre-filling overlying regions;
(4) obturation is shaping: install chaste tree fragrant plant at pre-fill area, and hanging filling bag, inserts crab-bolt in filling bag; High-water material slip enters filling bag after mixing, under the effect of chaste tree fragrant plant, filling bag, form obturation;
(5) obturation is reinforced: between obturation and top board, add timber wedge; Outside chaste tree fragrant plant, crab-bolt two ends install longitudinal W steel band respectively, then add top tray to crab-bolt and use fastening nuts.
Preferably, in step (1), described anchor cable is arranged along reserved tunnel axis direction, and arrange one every 3m, anchor cable length is set to 5m.
Preferably, in step (2), described hydraulic prop is arranged along reserved tunnel axis direction, arranges one group every 1.5m, often organizes 2.
Preferably, in step (3), described anchor pole divides two arrangements to put, and bolt interval is 1.2m × 1.2m, and rock-bolt length is 2.2m.
Preferably, in step (4), described crab-bolt divides two rows to arrange, often the spacing of arranging in crab-bolt between adjacent crab-bolt is 1.2m.
Compared with the prior art, Advantageous Effects of the present invention is:
(1) of the present invention protect lane method be specially adapted to medium tight roof under girdle, the immediate roof because of existing tunnel is compound roof, and anchor cable and the top board of original anchor pole and complement form combined beam structure jointly, ensure that adjoining rock stability; High-water material pocket type roadside packing, can ensure good shaping, can provide enough enabling capabilities again; And high-water material roadside packing is keeping also achieving closing of goaf while Drift stability, preventing from leaking out and the spontaneous combustion of coal and pernicious gas enter tunnel.
(2) the present invention adopts chaste tree fragrant plant as template, under avoiding other formwork erection situations, and the safety problem that workman enters goaf recovery template and causes.
(3) mechanization degree of the present invention is high, and labor strength is low, and easy to operate, technique is simple, and pack effectiveness is high, and filling effect is good.
Accompanying drawing explanation
Fig. 1 is drift section figure of the present invention.
In figure: 1.-individual prop, 2.-high-water material obturation, 3.-crab-bolt, 4.-anchor pole, 5.-anchor cable.
Detailed description of the invention
By reference to the accompanying drawings, a kind of girdle roadside packing non chain pillar entryprotection method, its support in mine gateway is on original bolting with wire mesh basis, complement anchor cable and set up hydraulic prop with strengthening supporting, and roadside support is the filling of high-water material pocket type.Specifically comprise the following steps:
(1) back reinforce support: complement anchor cable in reserved tunnel and within first advance 20m, anchor cable is arranged along tunnel axis direction, and arrange one every 3m, anchor cable length is set to 5m.
(2) lame advanced supporting: set up hydraulic prop within first advance 20m in reserved tunnel; Hydraulic prop is arranged along tunnel axis direction equally, arranges one group every 1.5m, often organizes 2.
(3) CONTROL OF STRATA MOVEMENT above obturation: after the advance of the face, makes a call to two row's anchor poles at pre-filling overlying regions, and bolt interval is 1.2m × 1.2m, and rock-bolt length is 2.2m, to strengthen the control to pre-filling overlying regions rock stratum.
(4) obturation is shaping: install chaste tree fragrant plant in pre-fill area both sides, between the chaste tree fragrant plant of both sides, hang filling bag, filling bag specification is length × wide × height=2.4m × 1.8m × 1.8m; Filling bag is provided with preformed hole, and crab-bolt inserts filling bag through preformed hole, crab-bolt horizontally set and with the axes normal of pre-fill area, and the two ends of crab-bolt are all through filling bag and the chaste tree fragrant plant being positioned at filling bag both sides; Insert two rows crab-bolt in each filling bag, upper row's crab-bolt is in side, tunnel apart from top board 0.6m, and lower row's crab-bolt is apart from bottom plate heights 0.6m, and often the spacing of arranging in crab-bolt between adjacent crab-bolt is 1.2m.High-water material first, second component adds water stirring respectively, forms first, second slip, be transported to pre-fill area by the road respectively after stirring, after blender mixing, enter filling bag, and every filling 0.2m height, above carries primary filling bag, avoids filling bag to drop and crumples.High-water material slip forms the obturation of design specifications under the restriction effect of filling bag and filling bag both sides chaste tree fragrant plant.
(5) obturation is reinforced: after obturation is shaping, wedge timber wedge between obturation and top board, make obturation and top board keep good contact.Install longitudinal W steel band respectively at crab-bolt two ends, after installing, W steel band is positioned at the outside of chaste tree fragrant plant, then gives crab-bolt end sleeve top tray and with fastening nuts, strengthens strength of filling mass and stability.
Gob-side entry retaining method of the present invention is specially adapted to the girdle under medium tight roof, and the immediate roof because of existing tunnel is compound roof, and anchor cable and the top board of original anchor pole and complement form combined beam structure jointly, ensure that adjoining rock stability; Use the filling of high-water material pocket type, can ensure good shaping, enough enabling capabilities can be provided again, and achieve closing of goaf, prevent from leaking out and pernicious gas enters tunnel; Adopt chaste tree fragrant plant as template, avoid workman and enter goaf and reclaim template and the safety problem that causes.
The above; be only patent of the present invention preferably implementation method; but the protection domain of patent of the present invention is not limited thereto; anyly be familiar with those skilled in the art in the technical scope of patent diselosesll of the present invention; the change that can expect easily or replacement, within the protection domain that all should be encompassed in patent of the present invention.
Claims (1)
1. a girdle roadside packing non chain pillar entryprotection method, is characterized in that comprising the following steps:
(1) back reinforce support: complement anchor cable in reserved tunnel and within first advance 20m;
(2) lame advanced supporting: set up hydraulic prop within first advance 20m in reserved tunnel;
(3) CONTROL OF STRATA MOVEMENT above obturation: after the advance of the face, beats anchor pole at pre-filling overlying regions;
(4) obturation is shaping: install chaste tree fragrant plant at pre-fill area, and hanging filling bag, inserts crab-bolt in filling bag; High-water material slip enters filling bag after mixing, under the effect of chaste tree fragrant plant, filling bag, form obturation;
(5) obturation is reinforced: between obturation and top board, add timber wedge; Outside chaste tree fragrant plant, crab-bolt two ends install longitudinal W steel band respectively, then add top tray to crab-bolt and with fastening nuts;
In step (1), described anchor cable is arranged along reserved tunnel axis direction, and arrange one every 3m, anchor cable length is set to 5m;
In step (2), described hydraulic prop is arranged along reserved tunnel axis direction, arranges one group every 1.5m, often organizes 2;
In step (3), described anchor pole divides two arrangements to put, and bolt interval is 1.2m × 1.2m, and rock-bolt length is 2.2m;
In step (4), described crab-bolt divides two rows to arrange, often the spacing of arranging in crab-bolt between adjacent crab-bolt is 1.2m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310056284.1A CN103147793B (en) | 2013-02-22 | 2013-02-22 | Girdle roadside packing non chain pillar entryprotection method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310056284.1A CN103147793B (en) | 2013-02-22 | 2013-02-22 | Girdle roadside packing non chain pillar entryprotection method |
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| CN103147793A CN103147793A (en) | 2013-06-12 |
| CN103147793B true CN103147793B (en) | 2016-01-20 |
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Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103670440A (en) * | 2013-12-19 | 2014-03-26 | 大同煤矿集团有限责任公司 | Tight roof gob-side entry retaining supporting method |
| CN104314612A (en) * | 2014-08-15 | 2015-01-28 | 中国矿业大学 | Method for preventing large-dip-angle coal bed filler next to gob-side entry retaining gateway from slipping |
| CN104727847B (en) * | 2015-01-14 | 2016-11-02 | 中国矿业大学 | Filled wall is from the gob-side entry retaining method without coal column eliminated |
| CN105019924B (en) * | 2015-07-30 | 2017-05-03 | 中国矿业大学 | Strong roof support pier column and method for protecting section coal pillar |
| CN107956509B (en) * | 2017-11-24 | 2020-05-26 | 河南理工大学 | Method for preventing wind leakage by stages in roof cutting gob-side entry retaining |
| CN108412542B (en) * | 2018-01-18 | 2019-03-12 | 山东科技大学 | A kind of wide lane digging gangue paste body filling of high seam is at lane method |
| CN110145363B (en) * | 2019-04-30 | 2024-03-29 | 中国矿业大学(北京) | Roof control method for realizing transition from fully mechanized mining face caving to filling mining |
| CN110145362A (en) * | 2019-05-21 | 2019-08-20 | 山东东山新驿煤矿有限公司 | A kind of artificial lane side in underground and underground lane side construction method |
| CN110924944B (en) * | 2019-11-29 | 2020-09-22 | 北京科技大学 | Coal mine main roadway down-pressing coal segmented circulating filling mining method |
| CN112943250B (en) * | 2021-04-02 | 2023-07-25 | 湖南科技大学 | Method for reserving roadway in filling area |
| CN113803110B (en) * | 2021-10-11 | 2023-11-03 | 山东科技大学 | Gob-side entry retaining roadside filling support method for large-dip-angle coal seam |
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