CN201826891U - Unequal-strength bearing roadside filling body for no coal pillar mining of thin coal seam - Google Patents
Unequal-strength bearing roadside filling body for no coal pillar mining of thin coal seam Download PDFInfo
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- CN201826891U CN201826891U CN2010205339654U CN201020533965U CN201826891U CN 201826891 U CN201826891 U CN 201826891U CN 2010205339654 U CN2010205339654 U CN 2010205339654U CN 201020533965 U CN201020533965 U CN 201020533965U CN 201826891 U CN201826891 U CN 201826891U
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- filling body
- roadside
- waste
- filled wall
- material filling
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Abstract
The utility model discloses an unequal-strength bearing roadside filling body for no coal pillar mining of a thin coal seam. The filling body is characterized in that a waste rock belt is attached to the outer side of a paste material filled wall; the paste material filled wall is as high as the waste rock belt; the waste rock belt is formed by waste rocks which are bagged and then stacked; inner side moulding boards stacked uniformly and straightly and serving as a paste filled wall are arranged on one side surface of the waste rock belt adjacent to the paste filled wall, and a waterproof cloth is hung on the inner side moulding boards; and the paste filled wall is 1.3 m to 1.5 m in width. In the utility model, waste rocks generated during coal mining process constitute the waste rock belt which is as high as the filling body and attached to the outer side of the roadside paste filled wall, so as to form an unequal-strength linking roadside filling body; therefore, the pressure of the original roadside filling body is reduced obviously, the maintenance state of a roadway is improved, and waste rocks can be reused on the spot, so that transportation expense and environment pollution can be reduced.
Description
Technical field
The utility model relates to a kind of gob side entry retaining roadside packing body, belongs to mine goaf roadside support technical field.
Background technology
Gob side entry retaining is a kind of form of non chain pillar entryprotection, wherein non chain pillar entryprotection is a great reform of coal-mining technique, edge air gallery technology is the main aspect of stope drift active workings support technology reform, it helps the reasonable development coal resources with it, improve coal recovery rate, reduce the tunnelling amount, fundamentally improve the nervous situation that coal mine excavation is taken over, improve the roadway maintenance situation, improve advantage such as pit mining benefit and extensively paid attention to.Aspect the environmental protection of coal mining, people attempt by the development of gob-side entry retaining support technology and improve and realize the green exploitation in colliery, protection environment.Gob side entry retaining both can be dug stope drift active workings less, reduced drivage ratio, reduced driving discharge refuse amount, spoil can be made ointment material for gathering materials again and carry out lane group's filling and goaf filling.Make ointment material in the down-hole, directly consume a large amount of spoils, realize that spoil does not go out well, ointment material filling gob side entry retaining is an important component part of the green exploitation in colliery.At present, the roadside support mode that domestic and international application is wider mainly contains: crib protection, close standing props supporting, waste pack supporting, artificial building block and lane other pump filling and support technology etc.According to country rock and supporting principle of combined action, can only resist pressure, release pressure by supporting, the compressive strain that allows by the roadside packing material slows down the pressure at other positions, tunnel, and control tunnel bulk deformation satisfies it and produces needs.So, have certain supporting resistance and allowing to make the research and development of roadside support body of compressive strain extremely urgent.
CN101519977A (200910029617.5) provides a kind of fixing method of gob-side entry retaining of large-inclination coal seam roadside packing body, comprises a, adopts the sky side in tunnel, work plane rear the gob-side entry retaining of large-inclination coal seam piecemeal is constructed roadside packing body (6); B, whenever finish a roadside packing body (6), along boring an anchor hole (3) at least downwards on the base plate (14) of goaf (8) one sides, put into anchoring agent (4) at roadside packing body (6); In c, firm pull bar (1) the insertion anchor hole (3), fully be fixed in the anchor hole (3) after the stirring with anchoring agent (4) with corresponding hole count; D, carry out constructing of next piece roadside packing body (6), firm pull bar (1) is fixed between two sections roadside packing bodies (6), with front baffle board (2) and nut that the afterbody of firm pull bar (1) is fastening; E, along with the propelling of coal-face, constructing of circulation construction roadside packing body (6) and firm pull bar (1) successively is until finishing whole gob-side entry retaining work.
CN101737079A (200810236340.9) discloses a kind of built-in three-dimensional reinforcing rib and has reinforced filled wall bodies of gob-side retained entries structure and method, by filled wall, the latticed three-dimensional reinforcing rib that is located in the filled wall constitutes, by latticed three-dimensional reinforcing rib is set in filled wall, the changing of the relative positions between the restriction filled wall, for providing to strengthen, reinforces gob side entry retaining roadside packing body, the whole filled wall that filling is combined to form is firmer, resistance to deformation slippage ability improves greatly, can effectively prevent the inside slippage of gob side entry retaining roadside packing body of wall, effectively safeguard the drift section behind the gob side entry retaining, guarantee the safety of gob side entry retaining.
(CN200710026095.4) provide a kind of side filling material of road retained for next sublevel, be made up of cement, flyash, stone, sand, water and compound additive, compound additive is made up of water reducing agent, water-loss reducer, air entraining agent and early strength admixture.After being mixed by proportioning, material of the present invention can carry out the long distance pumping construction, have good bearer properties and deformation performance after the sclerosis, the filling physical efficiency control that forms is the absciss layer and the timely directly top and the next basic top of cutting off on top directly, the spoil filling in the goaf that falls that making collapses is more closely knit, reduce bending, the sinking on basic top, to reduce the suffered load of supporting in the lane and the distortion of roadway surrounding rock, keep the stability in tunnel.
Summary of the invention
At the deficiencies in the prior art, the utility model provides a kind of girdle not have coal pillar mining and does not wait strong carrying roadside packing body.
The key of gob side entry retaining structure is that to require to increase resistance speed along an empty side roadside support body fast, and has the top board that rational supporting drag energy cuts certain altitude, has bigger deflection and adapts to the gob side entry retaining drastic deformation, reduces the roadside support cost simultaneously as far as possible.
The technical solution of the utility model is as follows:
The coal pillar mining of not having a kind of girdle does not wait strong carrying roadside packing body, comprises ointment material filling wall, it is characterized in that (promptly near goaf one side) is attached with waste pack in the ointment material filling wall outside, and ointment material filling wall and waste pack are contour.
Above-mentioned waste pack is to form assembling after the spoil pack, and waste pack assembles neat straight and hang with canvas cloth in abutting connection with a side of ointment material filling wall, and as the inner side template of ointment material filling wall, 1.3m-1.5m is wide for ointment material filling wall simultaneously.
Between above-mentioned spoil bag layer and the layer, crisscross piling up is to guarantee the stability of waste pack.
Above-mentioned waste pack width 1.5m-2.0m.
The above-mentioned waste pack outside is provided with the Zhi Mudian post, is used for firm spoil bag.
When preparation ointment material filling wall, the outboard template of ointment material filling wall adopts plank, steel plate or bamboo basketry.The ointment material filling is finished and was removed this outboard template in 5 hours later on.
The obturation top that is made of ointment material filling wall and waste pack of the present utility model is provided with the Device in Gas circulation road, is used to install the gas drainage under suction pipe.The setting of Device in Gas circulation road can be with reference to prior art.
The paste body filling material of above-mentioned ointment material filling wall can be selected prior art for use, for example the described filler of CN101143772A, CN1821547A in the background technology.The utility model with the paste body filling material of embodiment 1 as preferred.
The characteristics of roadside packing body of the present utility model mainly are: in thin coal bed fully-mechanized mining working surface production process, because ocurrence of coal seam thickness can not satisfy the requirement of the minimum mining height of ordinary production, coal-winning machine must caunch or act as a planted agent and cut out a part of spoil during the advance of the face.For improving Coal Quality and saving cost, spoil is packed, be laid in the external side of roadside packing (goaf side), form a roadside packing body that does not wait strong material to be coupled to form with prior art lotion cementitious materials obturation, the roadside packing body that lotion cementitious materials and waste pack are combined calls and does not wait strong carrying roadside packing body, this kind mixes the roadside support body can provide working resistance effectively, also certain contracted amount can be arranged, can allow pressure, improve the roadway maintenance state, the control of gob side entry retaining roadway surrounding rock is had better supporting effect.
Roadside packing body of the present utility model is applicable to thin, the medium-thickness seam of exploitation gentle dip and inclination.
Good effect of the present utility model is:
The spoil that utilizes work plane to produce in process of production, other paste filling material filling wall outside additional width is 1.5-2.0m and the contour waste pack of obturation in the lane, form and do not wait close coupling roadside packing body, more merely use lotion cementitious matter obturation, can obviously reduce the pressure that former roadside packing body is born, the sedimentation and the base plate that alleviate top board are heaved, adapt to the motion of roadway surrounding rock better, obtain better gob side entry retaining effect, and can digest the spoil of generation on the spot, reduced behind expense that the spoil transportation produces and the gug the pollution of environment, obtained economic benefit and environmental benefit.
The utility model is simple in structure, and method is easy, and easily construction is safe and reliable, has practicality widely.
Description of drawings
Fig. 1 is the structural representation (being the section at Fig. 2 A-A place) of obturation of the present invention, tunnel, the left side, and goaf, the right, Fig. 2 is the strong carrying roadside packing body gob side entry retaining construction floor map that do not wait of the present invention.
Wherein, 1, anchor cable, 2, anchor pole, 3, waste pack, 4, the goaf, 5, canvas cloth, 6, ointment material filling wall, 7, outboard template, 8, the tunnel, 9, spoil, 10, wood point post, 11, reserve the gas drainage under suction pipe, 12, steel band supporting.
The specific embodiment
Below in conjunction with embodiment and accompanying drawing the utility model is described further, but is not limited thereto.
Embodiment 1:
A kind of no coal pillar mining does not wait strong carrying roadside packing body, constitute by ointment material filling wall 6 and waste pack 3, assemble after the spoil pack and be waste pack, waste pack 3 is positioned at the goaf 4 in the other ointment material filling wall outside, lane, one side of waste pack 3 close ointment material filling walls 6 assembles together directly, hangs the inner side template of 5 back whiles of canvas cloth as ointment material filling wall 6, the outboard template 7 of ointment material filling wall adopts plank, and the ointment material filling is finished and removed this outboard template in 5 hours later on.1.5m is wide for ointment material filling wall.Waste pack 3 width 1.8m.
The filler that ointment material filling wall is used selects the 425# Portland cement as cementitious material, flyash is as the active addition that gelling property is arranged, the chicken girt of particle diameter 5-10mm is expected as rough set (bone), the spoil powder of particle diameter＜5mm and particle diameter＜5mm sand is as thin collection (bone) material, and adding NaCl, Na
2CO
3With Wjj water reducing agent (NaCl, Na
2CO
3Be Shandong seaization limited company and produce, the Wjj water reducing agent is that Shandong Xin Wen Mining Group supply and marketing company produces, and three's quality proportioning is NaCl: Na
2CO
3: Wjj water reducing agent=1.1: 1: 3.2) as material modified.Select each constituent mass ratio to be: cement: flyash: spoil powder and sand: material modified: chicken girt=35: 27: 13: 1.2: 38.8, add water, making ratio of water to material is 1.45.The mass ratio of spoil powder and sand 1: 1.The ointment material filling wall that this paste body filling material is made is during the 14 days length of time, and intensity reaches 12MPa, and slump is 22cm.
Illustrate: ointment material filling wall is meant at normal curing condition and is issued to the time that the best bearing strength of paste body filling wall is experienced in length of time.
Gob side entry retaining obturation construction method step is as follows:
(1) piling up waste pack 3 adopts canvas cloth 5 to obturage (spillage when preventing the filling ointment material) as inner side template, install outboard template 7, casting resin spice, conveying, filling paste body filling material between inner and outer template, filler will be full of the interior space of template and connect the top fully.Above-mentioned outboard template 7 adopts the planks bookbinding to form template specification: length * wide * thick=3.0 * 0.4 * 0.04m, template upside and rib side template install individual prop and make blindage, prevent that casting resin from washing template open.What other did not clearly limit can be with reference to prior art.
(2) waste pack construction: under obturation, help 1.5 meters steel band supporting 12 scopes in goaf 4, undertaken by circulation from inside to outside, pile up waste pack.When piling up waste pack 3, below obturation, install row's wood point post 10, some post specification:
Above high-quality log, spacing: 1.6m props up and is located at top board steel band supporting 12 times, and it is strong to connect the top; After the filling 5 hours, initial setting strength reaches requirement 2.4MPa after testing, removes exterior sheathing 7, and the wood point post 10 that installs no longer returns to be removed.
After removing exterior sheathing 7, with advance of the face reach outboard template 7.Repeat above construction sequence, reach the needed obturation length of gob side entry retaining.
Claims (5)
1. a girdle does not have coal pillar mining and does not wait strong carrying roadside packing body, comprises ointment material filling wall, it is characterized in that being attached with waste pack in the ointment material filling wall outside, and ointment material filling wall and waste pack are contour.
2. the carrying roadside packing body by force that do not wait as claimed in claim 1, it is characterized in that described waste pack is to form assembling after the spoil pack, waste pack assembles together directly, hangs with canvas cloth in abutting connection with a side of paste body filling wall, as the inner side template of ointment material filling wall, 1.3m-1.5m is wide for ointment material filling wall simultaneously.
3. the carrying roadside packing body by force that do not wait as claimed in claim 1 is characterized in that crisscross piling up between described spoil bag layer and the layer.
4. the carrying roadside packing body by force that do not wait as claimed in claim 1 is characterized in that described waste pack width 1.5m-2.0m.
5. the carrying roadside packing body by force that do not wait as claimed in claim 1 is characterized in that the described waste pack outside is provided with the Zhi Mudian post.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205339654U CN201826891U (en) | 2010-09-17 | 2010-09-17 | Unequal-strength bearing roadside filling body for no coal pillar mining of thin coal seam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205339654U CN201826891U (en) | 2010-09-17 | 2010-09-17 | Unequal-strength bearing roadside filling body for no coal pillar mining of thin coal seam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201826891U true CN201826891U (en) | 2011-05-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205339654U Expired - Fee Related CN201826891U (en) | 2010-09-17 | 2010-09-17 | Unequal-strength bearing roadside filling body for no coal pillar mining of thin coal seam |
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| CN (1) | CN201826891U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN103075188A (en) * | 2012-12-29 | 2013-05-01 | 山东科技大学 | Downhole waste rock filling equipment and filling method using same |
| CN105888665A (en) * | 2016-04-06 | 2016-08-24 | 中国神华能源股份有限公司 | Method for designing main roadway coal pillar recycling scheme |
| CN108590655A (en) * | 2018-03-27 | 2018-09-28 | 山东科技大学 | Assemble the method that wall realizes gob side entry retaining |
-
2010
- 2010-09-17 CN CN2010205339654U patent/CN201826891U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN103075188A (en) * | 2012-12-29 | 2013-05-01 | 山东科技大学 | Downhole waste rock filling equipment and filling method using same |
| CN103075188B (en) * | 2012-12-29 | 2014-12-10 | 山东科技大学 | Downhole waste rock filling equipment and filling method using same |
| CN105888665A (en) * | 2016-04-06 | 2016-08-24 | 中国神华能源股份有限公司 | Method for designing main roadway coal pillar recycling scheme |
| CN105888665B (en) * | 2016-04-06 | 2018-12-04 | 中国神华能源股份有限公司 | The design method of pillar recovery scheme |
| 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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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110511 Termination date: 20120917 |