CN102733820A - Gob-side entry retaining support wall and integrated construction method thereof - Google Patents
Gob-side entry retaining support wall and integrated construction method thereof Download PDFInfo
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- CN102733820A CN102733820A CN2012102318310A CN201210231831A CN102733820A CN 102733820 A CN102733820 A CN 102733820A CN 2012102318310 A CN2012102318310 A CN 2012102318310A CN 201210231831 A CN201210231831 A CN 201210231831A CN 102733820 A CN102733820 A CN 102733820A
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- side entry
- entry retaining
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Abstract
The invention discloses a gob-side entry retaining support wall and an integrated construction method thereof. The gob-side entry retaining support wall is a gangue bag wall built with gangue bags, and the gangue bag wall has thickness of 2.5-3.0 meters; a surface of the gangue bag wall is provided with mining plastic nets; steel hoops are arranged on the support wall every 2 meters; a structure of the steel hoop is realized by respectively arranging two corresponding vertical steel bands at both sides of the support wall and tensioning the two vertical steel bands at both sides of the support wall with a long bolt; and M-shaped steel bands used for coal mine support are taken as the steel bands. According to the invention, the gob-side entry retaining support wall makes gob-side entry retaining gangue piles a whole part; compression resistance of the gob-side entry retaining support wall is good; gateway separation caused by the increase of top plate sinkage is prevented; collapse of the gangue piles under pressure of the top plates is further prevented; and top plate accidents caused by the increase of top plate sinkage are completely eliminated.
Description
Technical field
The present invention relates to the coal mining field.
Background technology
The stoping low coal seam work plane is in recovery process; For the excavation work amount in minimizing tunnel that can be bigger with reduce loss of coal pillar; Generally promote edge air gallery technology; Traditional gob side entry retaining process using beats anchor pole, build and to establish the method that the spoil bag adds lapping or whitewashing and safeguard top board, and through the investigation statistics, this technology can only can be used in the tunnel service time more in short-term.Press observation to confirm according to the ore deposit, tunnel; The tunnel deflection changes less in earlier stage, and the later stage deflection increases obviously, even has exceeded the minimum constructive height that is allowed in the safety regulations in coal mine; Make top board be prone to the absciss layer phenomenon; There is the hidden danger of the unexpected large tracts of land inbreak of top board to exist, and increased unnecessary workloads such as planted agent, caving, had a strong impact on normal safety in production.Termination roof control when the left potential safety hazard of gob side entry retaining is next working face mining has also increased difficulty.
Summary of the invention
The objective of the invention is to invent a kind of gob-side entry retaining support body of wall and integral construction method for solving the deficiency of prior art.
Technical scheme is, a kind of gob-side entry retaining support body of wall, and it is the thick spoil bag body of wall of 2.5-3.0 rice that assembles with the spoil bag, it is characterized in that spoil bag surface of wall is provided with mining plastic wire, and every interval is provided with stirrup for 2 meters on the supporting body of wall; The structure of stirrup is to arrange a corresponding vertical steel band respectively on spoil bag body of wall two sides, again with the vertical steel band tension of stay bolt with the two sides; The M steel band of model that above-mentioned steel band adopts coal mine support to use; Above-mentioned mining plastic wire is that net is used in colliery supporting commonly used.
The integral construction method of above-mentioned gob-side entry retaining support body of wall, step is following:
The first step,
Prepare material: it is subsequent use in the bag 1, spoil to be packed into; 2, the mining plastic wire of intercepting, the intercepted length of mining plastic wire are the height that the thickness of supporting body of wall adds the supporting body of wall of twice; 3, intercepting steel band, 1.2 meters of intercepted lengths, and in processing bolt hole, steel band two, 1.0 meters of bolt hole spacings; 4, the processing effective length is the stay bolt of support wall body thickness, and the stay bolt two ends all process screw thread;
Second step,
The substrate of cleaning gob-side entry retaining support body of wall; After having cleared up, the mining plastic wire of intercepting is layered in the substrate, during lapping in substrate the mid portion of the mining plastics of tiling; Press stubble between two, after having tiled the remainder outside the support wall body thickness is rolled temporarily;
The 3rd step,
Lapping limit, limit assembles the spoil bag, and is undertaken by 1～2 meter advance of working cycle; After assembling first floor spoil bag; The i.e. bottom bolt of a stay bolt is placed for 2 meters in every interval, continues to assemble the spoil bag, on first floor spoil bag basis, assembles when highly reaching 1.0 meters again; Position another root stay bolt of placement is the top bolt on the bolt of bottom again; Bottom bolt and top bolt constitute pair of bolts, continue to assemble the spoil bag again to top board, form spoil bag body of wall;
The 4th step,
The mining plastic wire of temporarily rolling is upwards launched to cover the two sides of spoil bag body of wall, and the paired steel band that will process again is contained in the two ends of bottom bolt and top bolt respectively, and the nut of screwing on is executed and added pretightning force, formation body of wall stirrup.
Gob-side entry retaining support body of wall of the present invention; Make whole gob side entry retaining spoil buttress form an integral body; Compressive property is good; Promptly played preventing that the amount of crushing from increasing and cause the effect of tunnel absciss layer, played preventing the crush phenomenon of spoil buttress of top board again, stopped on root that the amount of crushing increases and the generation that causes roof accident.
Description of drawings
Fig. 1 is the sketch map of gob-side entry retaining support body of wall embodiment of the present invention.
Marginal data, 1-spoil bag body of wall, the mining plastic wire of 2-, 3-steel band, 4-bottom bolt, 5-top bolt.
The specific embodiment
As shown in Figure 1, a kind of gob-side entry retaining support body of wall, it is the thick spoil bag body of wall 1 of 2.5-3.0 rice that assembles with the spoil bag, wherein spoil bag body of wall 1 surface is provided with mining plastic wire 2, and every interval is provided with stirrup for 2 meters on spoil bag body of wall 1; The structure of stirrup is to arrange a corresponding vertical steel band 3 respectively on spoil bag body of wall 1 two sides, again with bottom bolt 4 and vertical steel band 3 tensions of top bolt 5 with the two sides.The M steel band of model that above-mentioned steel band 3 adopts coal mine support to use.Above-mentioned mining plastic wire 2 is used net for colliery supporting commonly used.
The integral construction method of above-mentioned gob-side entry retaining support body of wall, step is following:
The first step,
Prepare material: it is subsequent use 1, to constitute the spoil bag with the packed spoil of braiding; 2, the mining plastic wire 2 of intercepting, the intercepted length of mining plastic wire 2 is the height that the thickness of supporting body of wall adds the supporting body of wall of twice; 3, intercepting steel band, 1.2 meters of intercepted lengths, and in processing bolt hole, steel band two, 1.0 meters of bolt hole spacings; 4, the processing effective length is the stay bolt of support wall body thickness, and the stay bolt two ends all process screw thread;
Second step,
The substrate of cleaning gob-side entry retaining support body of wall; After having cleared up, the mining plastic wire 2 of intercepting is layered in the substrate, during lapping in substrate the mid portion of the mining plastics 2 of tiling; Press stubble between two, after having tiled the remainder outside the support wall body thickness is rolled temporarily;
The 3rd step,
Lapping limit, limit assembles the spoil bag, and is undertaken by 1～2 meter advance of working cycle; After assembling first floor spoil bag; The i.e. bottom bolt 4 of a stay bolt is placed for 2 meters in every interval, continues to assemble the spoil bag, on first floor spoil bag basis, assembles when highly reaching 1.0 meters again; Position another root stay bolt of placement is a top bolt 5 on bottom bolt 4 again; Bottom bolt 4 constitutes pair of bolts with top bolt 5, continues to assemble the spoil bag again to top board, forms spoil bag body of wall 1;
The 4th step,
The mining plastic wire of temporarily rolling 2 is upwards launched to cover the two sides of spoil bag body of wall 2, and the paired steel band 3 that will process again is contained in the two ends of bottom bolt 4 and top bolt 5 respectively, and the nut of screwing on is executed and added pretightning force, forms the body of wall stirrup.
Claims (2)
1. gob-side entry retaining support body of wall, it is the thick spoil bag body of wall of 2.5-3.0 rice that assembles with the spoil bag, it is characterized in that spoil bag surface of wall is provided with mining plastic wire, and every interval is provided with stirrup for 2 meters on the supporting body of wall; The structure of stirrup is to arrange a corresponding vertical steel band respectively on spoil bag body of wall two sides, again with the vertical steel band tension of stay bolt with the two sides; The M steel band of model that above-mentioned steel band adopts coal mine support to use.
2. gob-side entry retaining support body of wall integral construction method as claimed in claim 1, step is following:
The first step,
Prepare material: it is subsequent use in the bag 1, spoil to be packed into; 2, the mining plastic wire of intercepting, the intercepted length of mining plastic wire are the height that the thickness of supporting body of wall adds the supporting body of wall of twice; 3, intercepting steel band, 1.2 meters of intercepted lengths, and in processing bolt hole, steel band two, 1.0 meters of bolt hole spacings; 4, the processing effective length is the stay bolt of support wall body thickness, and the stay bolt two ends all process screw thread;
Second step,
The substrate of cleaning gob-side entry retaining support body of wall; After having cleared up, the mining plastic wire of intercepting is layered in the substrate, during lapping in substrate the mid portion of the mining plastics of tiling; Press stubble between two, after having tiled the remainder outside the support wall body thickness is rolled temporarily;
The 3rd step,
Lapping limit, limit assembles the spoil bag, and is undertaken by 1～2 meter advance of working cycle; After assembling first floor spoil bag; The i.e. bottom bolt of a stay bolt is placed for 2 meters in every interval, continues to assemble the spoil bag, on first floor spoil bag basis, assembles when highly reaching 1.0 meters again; Position another root stay bolt of placement is the top bolt on the bolt of bottom again; Bottom bolt and top bolt constitute pair of bolts, continue to assemble the spoil bag again to top board, form spoil bag body of wall;
The 4th step,
The mining plastic wire of temporarily rolling is upwards launched to cover the two sides of spoil bag body of wall, and the paired steel band that will process again is contained in the two ends of bottom bolt and top bolt respectively, and the nut of screwing on is executed and added pretightning force, formation body of wall stirrup.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2012102318310A CN102733820A (en) | 2012-07-05 | 2012-07-05 | Gob-side entry retaining support wall and integrated construction method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012102318310A CN102733820A (en) | 2012-07-05 | 2012-07-05 | Gob-side entry retaining support wall and integrated construction method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103397905A (en) * | 2013-04-17 | 2013-11-20 | 唐建新 | System and method for achieving natural striding, falling and filling of coal beds, flexible roadway protection and complete gob-side entry retaining |
| CN103670465A (en) * | 2013-12-12 | 2014-03-26 | 青海省能源发展（集团）有限责任公司 | Supporting frame of roadway surrounding rock |
| CN107269302A (en) * | 2017-07-25 | 2017-10-20 | 中国矿业大学(北京) | A kind of self-locking tunnel top side suspension device |
| CN108590655A (en) * | 2018-03-27 | 2018-09-28 | 山东科技大学 | Assemble the method that wall realizes gob side entry retaining |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101949301A (en) * | 2010-08-30 | 2011-01-19 | 山东新矿赵官能源有限责任公司 | Different-strength bearing roadway-beside filling body of gob-side entry under coal mine |
| 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 |
| CN102383857A (en) * | 2011-07-05 | 2012-03-21 | 徐州贝壳迈宁矿业科技有限公司 | Gob-side entry retaining process for solid-filling, coal-mining and laying gangue wall |
| CN202745881U (en) * | 2012-07-05 | 2013-02-20 | 山东新阳能源有限公司 | Goaf-side entry retaining wall body |
-
2012
- 2012-07-05 CN CN2012102318310A patent/CN102733820A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101949301A (en) * | 2010-08-30 | 2011-01-19 | 山东新矿赵官能源有限责任公司 | Different-strength bearing roadway-beside filling body of gob-side entry under coal mine |
| 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 |
| CN102383857A (en) * | 2011-07-05 | 2012-03-21 | 徐州贝壳迈宁矿业科技有限公司 | Gob-side entry retaining process for solid-filling, coal-mining and laying gangue wall |
| CN202745881U (en) * | 2012-07-05 | 2013-02-20 | 山东新阳能源有限公司 | Goaf-side entry retaining wall body |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103397905A (en) * | 2013-04-17 | 2013-11-20 | 唐建新 | System and method for achieving natural striding, falling and filling of coal beds, flexible roadway protection and complete gob-side entry retaining |
| CN103670465A (en) * | 2013-12-12 | 2014-03-26 | 青海省能源发展（集团）有限责任公司 | Supporting frame of roadway surrounding rock |
| CN107269302A (en) * | 2017-07-25 | 2017-10-20 | 中国矿业大学(北京) | A kind of self-locking tunnel top side suspension device |
| CN108590655A (en) * | 2018-03-27 | 2018-09-28 | 山东科技大学 | Assemble the method that wall realizes gob side entry retaining |
| CN108590655B (en) * | 2018-03-27 | 2019-05-31 | 山东科技大学 | Assemble the method that wall realizes gob side entry retaining |
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Application publication date: 20121017 |