CN101892860A - Method for entry retaining for walling at sides of road in steel cylinder support mode - Google Patents
Method for entry retaining for walling at sides of road in steel cylinder support mode Download PDFInfo
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- CN101892860A CN101892860A CN 201010196953 CN201010196953A CN101892860A CN 101892860 A CN101892860 A CN 101892860A CN 201010196953 CN201010196953 CN 201010196953 CN 201010196953 A CN201010196953 A CN 201010196953A CN 101892860 A CN101892860 A CN 101892860A
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- steel cylinder
- road
- entry retaining
- sides
- walling
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 56
- 239000010959 steel Substances 0.000 title claims abstract description 56
- 238000000034 method Methods 0.000 title claims abstract description 15
- 239000004567 concrete Substances 0.000 claims abstract description 19
- 238000010276 construction Methods 0.000 claims abstract description 8
- 239000003818 cinder Substances 0.000 claims abstract description 4
- 230000010412 perfusion Effects 0.000 claims description 8
- 239000011378 shotcrete Substances 0.000 claims description 6
- 238000005065 mining Methods 0.000 claims description 5
- 239000003245 coal Substances 0.000 abstract description 7
- 239000000463 material Substances 0.000 abstract description 4
- 239000002002 slurry Substances 0.000 abstract description 2
- 239000011435 rock Substances 0.000 abstract 1
- 238000005507 spraying Methods 0.000 abstract 1
- 239000002699 waste material Substances 0.000 abstract 1
- 239000010878 waste rock Substances 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 9
- 230000000694 effects Effects 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 208000019901 Anxiety disease Diseases 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000036506 anxiety Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
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Abstract
The invention relates to a method for entry retaining for walling at sides of a road in a steel cylinder support mode, which is applicable to the construction of gob-side entry retaining for a coal mine stope. The method comprises the steps of: after stopping a coal face, arranging a steel cylinder support at the edge of a gob by lagging 1-2m, and arranging a steel grid frame structure in the steel cylinder; then, pouring concrete in the steel cylinder; firmly piling the edge of the gob with waste rocks, coal cinder and the like after an overhead plate of the god collapses; spraying slurry to close the gob; and jointly forming a support wall at the sides of the road with the high-strength steel cylinder support and a waste rock wall. The restriction of the high-strength steel cylinder can obviously enhance the strength and the carrying capacity of the concrete structure. The method has the advantages of simple construction process and high adaptability, and also can save materials, reduce labor intensity and improve the construction environment.
Description
Technical field
The present invention relates to a kind of entry retaining for walling at sides of road in steel cylinder support mode method, be particularly useful for stope working surface of coal mines gob side entry retaining engineering.
Background technology
No coal column edge air gallery technology is intended to change the draft type of coal-face, and traditional " U " type is ventilated is transformed into the ventilation of " Y " type, fundamentally solves stope upper corner methane accumulation problem, makes the safe condition of gaseous mine obtain taking a turn for the better.In addition, use this technology and can also realize the contiguous seams gas pumping, have and improve coal mining rate, alleviate digging and take over advantages such as anxiety.Adopted the influence of back roof aggravating activities, stay the lane to have certain degree of difficulty on the implementation, one of its key technology is the roadside packing technology, is promptly building body of wall along the goaf with the edge, tunnel, supports back, and shutoff is carried out in the goaf.The other technology of building a wall in existing lane mainly is divided into forms such as grillage supports, building block heap base, concrete filling.The former only is adapted to the coal seam and buries the condition shallow, that roof pressure is less, suffers exit substantially.Both application of back are comparatively extensive, and operational sequence complexity, labour intensity are big, the speed of building a wall waits shortcoming slowly but the scene exists, so that influence the High-efficient Production of work plane.Building block heap base method is not only wasted man-hour, also easily because supporting intensity is not enough or heap is built leakiness and cause goaf gas to reveal.The existence of problems has limited the application and the development of edge air gallery technology to a certain extent.
Summary of the invention
The objective of the invention is at the problem that exists in the prior art, the entry retaining for walling at sides of road in steel cylinder support mode that a kind of method is simple, support strength is big, operational sequence is simple, labour intensity is low method is provided.
For achieving the above object, technical scheme steps of the present invention is as follows:
In the formula: h-mining height, the radius of R-steel cylinder;
Described hysteresis work plane be not more than 5m apart from s; Described spacing distance l is about 1.6m～2.0m; The thickness that the wall thickness of described steel cylinder pillar is not less than the described gunite layer of 10mm is more than the 100mm.
Beneficial effect:
(1) supporting capacity is strong.Because adopt and be marked with concrete steel tube structure, wherein concrete is subjected to the constraint of high strength steel cylinder, carrying back its compressive strength under three-dimensional stress state can be largely increased;
(2) construction technology is simple, and operability and compliance are strong.Steel cylinder and bar frame structure are pre-processed on ground, and directly being transported to the job location can use, and on-the-spot needs concrete perfusion and build envelope wall, compares with existing walling technology, and bigger simplification is arranged on the operation;
(3) save material.The other filled wall width of prior art inter-road is generally 2.0～2.8m, and in order to improve the intensity of body of wall, skyhook again after often built-in a large amount of bar constructions or the walling, and material usage is bigger.And the steel cylinder formula that the present invention adopts stays lane body of wall width maximum to be no more than selected steel cylinder diameter, has saved lot of materials, remarkable in economical benefits.
(4) reduced working strength of workers.
(5) improved the construction environment in tunnel.
Description of drawings
Accompanying drawing is the lane schematic layout pattern that stays of the present invention.
Among the figure: 1-coal-face, 2-goaf, 3-Liu Xiang tunnel, 4-steel cylinder pillar, 5-bar frame, 6-pack wall, 7-gunite layer, the distance of s-hysteresis work plane, l-spacing distance.
Shown in the accompanying drawing, at first the tunnel goaf side in the 1～2m scope of coal-face 1 rear is laid steel cylinder pillar 4, and bar frame 5 is preset in the inside of steel cylinder pillar 4, should guarantee steel cylinder during arrangement perpendicular to roof and floor, and guarantees the width in Liu Xiang tunnel 3;
The specific embodiment
Can be in bucket after steel cylinder pillar 4 is settled and finished concrete perfusion, concrete is wanted filling contact top board, from settling the steel cylinder pillar must finish in the 5m scope of work plane rear to the whole activities of concrete perfusion, the hysteresis work plane was not more than 5m apart from s after promptly the steel cylinder pillar installed; With the continuous propelling of work plane, spacing distance l lays next steel cylinder pillar 4 successively, and concrete perfusion, and until the concrete joint top, the spacing distance l between the steel cylinder pillar 4 is about 1.6m～2.0m;
At last, when the goaf collapse fall to enriching after, pile up pack wall 6 with broken cash or cinder being provided with between the steel cylinder pillar 4 at interval, and whitewash by on the metope of gob side entry retaining side at pack wall 6, should guarantee that slurries can be with the complete shutoff in spoil slit, the thickness of gunite layer 7 is more than the 100mm, and making steel cylinder pillar and pack wall 6 closely fixed is one.
The bucket wall thickness δ of steel cylinder pillar 4 is not less than 10mm, and the height H of steel cylinder pillar 4 is determined according to following formula:
In the formula: h is the average of mining height, and R is the radius of steel cylinder, and the steel cylinder radius R generally should be greater than 400mm according to the on-site actual situations value.
When causing the mining height increase to cause steel cylinder pillar 4 height H not enough when bellying, can pass through flange ways of connecting continued access steel cylinder section on steel cylinder pillar 4, to satisfy the requirement that steel cylinder pillar 4 connects the top.
Claims (5)
1. entry retaining for walling at sides of road in steel cylinder support mode method is characterized in that:
Step 1, lay the steel cylinder pillar (4) that bar frame (5) is preset in inside at the tunnel goaf side apart from the s scope of coal-face (1) rear hysteresis work plane, the height H of steel cylinder pillar (4) is determined according to following formula:
In the formula: h-mining height, the radius of R-steel cylinder;
Step 2, in steel cylinder pillar (4) concrete perfusion, push up until concrete joint;
Step 3, with the continuous propelling of work plane, spacing distance l lays next steel cylinder pillar (4) successively, and concrete perfusion, pushes up until concrete joint;
Step 4, between the steel cylinder pillar (4) that spacing distance l is provided with, pile up pack wall (6) with broken cash or cinder, and at pack wall (6) by carrying out gunite layer (7) construction on the metope of gob side entry retaining side, making steel cylinder pillar and pack wall (6) closely fixed is one.
2. entry retaining for walling at sides of road in steel cylinder support mode method according to claim 1 is characterized in that: described hysteresis work plane be not more than 5m apart from s.
3. entry retaining for walling at sides of road in steel cylinder support mode method according to claim 1 is characterized in that: described spacing distance l is about 1.6m～2.0m.
4. entry retaining for walling at sides of road in steel cylinder support mode method according to claim 1 is characterized in that: the wall thickness of described steel cylinder pillar (4) is not less than 10mm.
5. entry retaining for walling at sides of road in steel cylinder support mode method according to claim 1 is characterized in that: the thickness of described gunite layer (7) is more than the 100mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010196953 CN101892860A (en) | 2010-06-05 | 2010-06-05 | Method for entry retaining for walling at sides of road in steel cylinder support mode |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010196953 CN101892860A (en) | 2010-06-05 | 2010-06-05 | Method for entry retaining for walling at sides of road in steel cylinder support mode |
Publications (1)
| Publication Number | Publication Date |
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| CN101892860A true CN101892860A (en) | 2010-11-24 |
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| CN 201010196953 Pending CN101892860A (en) | 2010-06-05 | 2010-06-05 | Method for entry retaining for walling at sides of road in steel cylinder support mode |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102505948A (en) * | 2011-10-27 | 2012-06-20 | 上海交通大学 | Foam concrete tank-type pier column for supporting in coal mines and preparation method thereof |
| CN102720498A (en) * | 2012-06-20 | 2012-10-10 | 鄂托克前旗长城煤矿有限责任公司 | Gob-side entry retaining mining process for coal face |
| CN102748070A (en) * | 2012-07-19 | 2012-10-24 | 兖州煤业股份有限公司 | Method for supporting gob-side entry retaining building block coak structure wall |
| CN102852551A (en) * | 2012-09-17 | 2013-01-02 | 扬州中矿建筑新材料科技有限公司 | Gob-side entry retaining method using high-water material filling columns |
| CN103161467A (en) * | 2013-02-25 | 2013-06-19 | 湖北杉树垭矿业科技开发有限公司 | Horizontal moderately thick mine body compartment type filling mining method |
| CN104074534A (en) * | 2014-06-27 | 2014-10-01 | 辽宁工程技术大学 | Gob-side entry retaining method of fully-mechanized mining/full-mechanized caving mining working face |
| WO2015196934A1 (en) * | 2014-06-25 | 2015-12-30 | 张吉雄 | Solid filling material feeding pipe |
| CN108051125A (en) * | 2017-12-06 | 2018-05-18 | 中国矿业大学(北京) | A kind of closed goaf caving zone stress field evolution measurement method |
| CN112324437A (en) * | 2020-10-20 | 2021-02-05 | 玉溪大红山矿业有限公司 | Method for improving recovery rate of point-pillar type upward horizontal layered filling mining method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101413393A (en) * | 2008-11-28 | 2009-04-22 | 兖州煤业股份有限公司 | Gob-side entry retaining side support method of coal bed fully mechanized caving face |
| CN101514633A (en) * | 2009-02-10 | 2009-08-26 | 河北金牛能源股份有限公司葛泉矿 | Gob-side entry retaining process without roadside support |
| CN101649744A (en) * | 2009-08-27 | 2010-02-17 | 王晓利 | Device and method for casting concrete continuous walls along gob-side entry retaining by mining working face |
-
2010
- 2010-06-05 CN CN 201010196953 patent/CN101892860A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101413393A (en) * | 2008-11-28 | 2009-04-22 | 兖州煤业股份有限公司 | Gob-side entry retaining side support method of coal bed fully mechanized caving face |
| CN101514633A (en) * | 2009-02-10 | 2009-08-26 | 河北金牛能源股份有限公司葛泉矿 | Gob-side entry retaining process without roadside support |
| CN101649744A (en) * | 2009-08-27 | 2010-02-17 | 王晓利 | Device and method for casting concrete continuous walls along gob-side entry retaining by mining working face |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102505948A (en) * | 2011-10-27 | 2012-06-20 | 上海交通大学 | Foam concrete tank-type pier column for supporting in coal mines and preparation method thereof |
| CN102720498B (en) * | 2012-06-20 | 2015-06-17 | 鄂托克前旗长城煤矿有限责任公司 | Gob-side entry retaining mining process for coal face |
| CN102720498A (en) * | 2012-06-20 | 2012-10-10 | 鄂托克前旗长城煤矿有限责任公司 | Gob-side entry retaining mining process for coal face |
| CN102748070A (en) * | 2012-07-19 | 2012-10-24 | 兖州煤业股份有限公司 | Method for supporting gob-side entry retaining building block coak structure wall |
| CN102748070B (en) * | 2012-07-19 | 2014-10-22 | 兖州煤业股份有限公司 | Method for supporting gob-side entry retaining building block coak structure wall |
| CN102852551A (en) * | 2012-09-17 | 2013-01-02 | 扬州中矿建筑新材料科技有限公司 | Gob-side entry retaining method using high-water material filling columns |
| CN103161467A (en) * | 2013-02-25 | 2013-06-19 | 湖北杉树垭矿业科技开发有限公司 | Horizontal moderately thick mine body compartment type filling mining method |
| CN103161467B (en) * | 2013-02-25 | 2014-06-18 | 湖北杉树垭矿业科技开发有限公司 | Horizontal moderately thick mine body compartment type filling mining method |
| WO2015196934A1 (en) * | 2014-06-25 | 2015-12-30 | 张吉雄 | Solid filling material feeding pipe |
| CN104074534A (en) * | 2014-06-27 | 2014-10-01 | 辽宁工程技术大学 | Gob-side entry retaining method of fully-mechanized mining/full-mechanized caving mining working face |
| CN108051125A (en) * | 2017-12-06 | 2018-05-18 | 中国矿业大学(北京) | A kind of closed goaf caving zone stress field evolution measurement method |
| CN112324437A (en) * | 2020-10-20 | 2021-02-05 | 玉溪大红山矿业有限公司 | Method for improving recovery rate of point-pillar type upward horizontal layered filling mining method |
| CN112324437B (en) * | 2020-10-20 | 2023-01-31 | 玉溪大红山矿业有限公司 | Method for improving recovery rate of point-column type upward horizontal stratified filling mining method |
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Application publication date: 20101124 |