CN105089693A - Goaf-side-roadway-retaining wall roof-contact improving method - Google Patents
Goaf-side-roadway-retaining wall roof-contact improving method Download PDFInfo
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- CN105089693A CN105089693A CN201510572238.6A CN201510572238A CN105089693A CN 105089693 A CN105089693 A CN 105089693A CN 201510572238 A CN201510572238 A CN 201510572238A CN 105089693 A CN105089693 A CN 105089693A
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- wall
- roadway
- side entry
- coal
- goaf
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Abstract
The invention discloses a goaf-side-roadway-retaining wall roof-contact improving method, and belongs to the field of goaf-side-roadway-retaining roadway-side supporting. The method includes the steps that a floral tube or a hose with holes or two floral tubes or two hoses with holes is/are laid at the portion, behind a working face end support, of the middle of the upper portion of a roof of a preset filling body and fixed to the roof or coal, one end of each tube is plugged, and the other end of each tube is led out to an in-roadway roof; a goaf-side-roadway-retaining roadway-side wall is constructed through conventional high hydraulic material bag filling, conventional concrete pumping filling, masonry and the like, after the wall is completely constructed or solidified, high-concentration concrete or yellow mud or accelerated cement or the like is injected into the floral tubes or the hoses with the holes in a roadway, and gaps such as anchoring nets between the wall and the roofs are filled with slurry accordingly till slurry overflows from the portions between the filling body and the roofs/the coal. After being rapidly solidified, the slurry is compactly connected with the roofs, the supporting effect of the wall is achieved in time, the roadway retaining effect can be improved, and the goaf-side-roadway-retaining application range can be expanded. The method is simple in technology and convenient to operate; a goaf can be sealed in time, the in-roadway roof can be effectively supported, and the goaf-side roof can be cut off.
Description
Technical field
The present invention relates to a kind of gob side entry retaining body of wall that improves and connect top method, belong to gob side entry retaining roadside support field, be particularly useful for that gob side entry retaining body of wall that needs and goaf completely cut off is closely knit to be connect.
Background technology
Gob side entry retaining is that twice utilization is done in a tunnel, and it can improve resource recovery, and alleviate excavation replacement nervous, making rational use of resources, reduce costs, is a major reform of coal mining and layout of actual mining roadway technology.The other body of wall in current gob side entry retaining lane mainly adopts the methods such as the filling of high-water material pocket type, template concrete filling, soft mould concrete filling, spoil bag, building block.In order to increase the stability of the other wall body area top board in lane and ensure safety, usually above work plane front, support or work plane rear adopt roof bolting with bar and wire mesh body of wall top panel area, but the body of wall that employing aforesaid way is constructed is due to reasons such as top board net, anchor pole (rope) and constructions, normally be difficult to completely closely knitly connect top, the other body of wall in lane can not play immediate support lane inside ceiling panel and cut off the effect of goaf side top board, and gob side entry retaining maintenance effects is poor.Connect top effect for improving body of wall, scene adopts timber or spoil to stop for body of wall and top board space larger part and pushes up, and smaller part sprayed mortar or macromolecular material in lane connect top, but are difficult to body of wall to connect top completely.China Patent No. is: 201010282345.2 disclose " construction method that a kind of gob side entry retaining reinforces obturation structure ", adopt the filling of high-water material pocket type, the pressure of filling pump is utilized during filling, filling bag is heaved and fully touches top board coal and rock beds, although play certain effect, be still difficult to when there being bolting with wire mesh top board/coal connect real top board completely.Therefore how to improve gob side entry retaining body of wall connect top effect just become this domain engineering technician need solve problem.
Summary of the invention
Technical problem: the object of the invention is the weak point overcome in prior art, provide a kind of construct simple, labour intensity is little, immediate support lane inside ceiling panel and the gob side entry retaining body of wall that cuts off goaf side top board can connect top method.
Technical scheme: raising gob side entry retaining body of wall of the present invention connects top method, adopt anchor beam rete cord to above front, coal-face termination, support and work plane rear top board/coal carry out supporting; Comprise the following steps:
A. middle position above the space top board to be filled at coal-face face end support rear, lay 1 ~ 2 floral tube or pertusate flexible pipe, and being fixed on top board/coal, floral tube or pertusate flexible pipe one termination are blocked, another termination leads on the top board in gob side entry retaining tunnel;
B. the body of wall that the building method construction gob side entry retaining lane of high-water material filling is other is adopted;
C. after wall construction completes and solidifies, in gob side entry retaining tunnel, by draw floral tube or pertusate flexible pipe one end in space to be filled, inject concrete, yellow mud or accelerated cement slurries, the anchor beam rete cord space between body of wall and space top board to be filled is made to be filled with concrete slurry, top is connect and from till outwards overflowing between body of wall and top board/coal until concrete slurry, stop slip casting, what complete gob side entry retaining body of wall connects top operation.
The horizontal range in the lead distance wall outer side face of described floral tube or pertusate flexible pipe is not less than 300mm.
The described setting rate injecting concrete, yellow mud or accelerated cement in floral tube or pertusate flexible pipe is 15s ~ 120s.
Beneficial effect: owing to have employed technique scheme, the present invention is by middle position above the space top board to be filled at coal-face face end support rear, lay floral tube or pertusate flexible pipe, another termination of floral tube is led on the top board in gob side entry retaining tunnel, after gob side entry retaining body of wall completes, by the floral tube in gob side entry retaining that exposes or pertusate flexible pipe to gob side entry retaining wall internal injection, until slurries note connects the backward outer spilling in top; Compared with prior art: improve gob side entry retaining body of wall and connect top effect, and improve coal recovery rate, alleviate excavation replacement nervous, can make rational use of resources, reduce costs, have practicality widely in the art, major advantage has:
1, body of wall can be made and top board/coal is closely knit connects top, prevent roof delamination, support support in mine gateway in time and cut off goaf top plate;
2, simple, the highly versatile of technique, workman easily grasps; 3, security reliability is high.
Accompanying drawing explanation
Fig. 1 is example schematic of the present invention.
Fig. 2 is floral tube structural representation of the present invention.
In figure: 1-coal-face, 2-anchor beam rete cord, 3-space to be filled, 4-floral tube or pertusate flexible pipe, 5-body of wall, 6-concrete, yellow mud or accelerated cement slurries, 7-gob side entry retaining tunnel, 8-floral tube or flexible pipe hole.
Detailed description of the invention
Below in conjunction with accompanying drawing, one embodiment of the present of invention are further described:
Raising gob side entry retaining body of wall of the present invention connects top method, and concrete steps are as follows:
A. along with the propelling of coal-face 1, according to space to be filled 3 top boards/coal stable case, above front, coal-face 1 termination, support or work plane rear adopt 3 top boards/coal region, anchor beam rete cord 2 supporting space to be filled;
B. 1 ~ 2 floral tube or pertusate flexible pipe 4 are laid in space to be filled 3 top boards at coal-face 1 face end support rear/coal centre position, and be fixed on top board/coal, floral tube or pertusate flexible pipe 4 one termination are blocked, another termination leads on the top board in gob side entry retaining tunnel 7; The horizontal range of lead distance body of wall 5 lateral surface of floral tube or pertusate flexible pipe 4 is not less than 300mm;
The diameter of described floral tube or pertusate flexible pipe 4 is not more than 30mm, and hole diameter is not more than 8mm.Near the centre being close to preset obturation according to space to be filled 3 top boards/coal situation or appropriately adjust, be beneficial to better closely knitly connect top.
The other body of wall 5 in method construction gob side entry retaining lane such as c. adopt high-water material packed filling, concrete pumping filling, build by laying bricks or stones;
D. after the other body of wall 5 in lane has been constructed and solidified, in floral tube or pertusate flexible pipe 4, slurries or the coagulum 6 of concrete, yellow mud or accelerated cement is injected in gob side entry retaining tunnel 7, the material injected in floral tube or pertusate flexible pipe 4 is high concentration concrete, yellow mud, accelerated cement, there is the characteristic of rapid solidification, can in 15s ~ 120s rapid solidification.Made the spaces such as the anchor net between body of wall 5 and top board/coal be full of slurries by the floral tube on floral tube or pertusate flexible pipe 4 or flexible pipe hole 8; The closely knit effect connecing top, support lane inside ceiling panel and cut-out goaf side top board is played after slurries 6 solidify.
Claims (4)
1. improve gob side entry retaining body of wall and connect a top method, adopt anchor beam rete cord (2) to carry out supporting to above coal-face (1) front, termination, support or work plane rear; It is characterized in that comprising the following steps:
A. in space to be filled (3) top board/coal middle position at coal-face (1) face end support rear, lay 1 ~ 2 floral tube or pertusate flexible pipe (4), and be fixed on top board/coal, floral tube or pertusate flexible pipe (4) termination are blocked, another termination leads on the top board of gob side entry retaining tunnel (7);
B. the body of wall (5) that the building method construction gob side entry retaining lane of high-water material filling is other is adopted;
C. after body of wall (5) has been constructed and solidified, in gob side entry retaining tunnel (7), by floral tube or pertusate flexible pipe (4) one end injection concrete, yellow mud or the accelerated cement slurries (6) in space to be filled (3) of drawing, anchor beam rete cord (2) space between body of wall (5) and space to be filled (3) top board is made to be filled with concrete slurry, top is connect and from till outwards overflowing between body of wall (5) and top board/coal until concrete slurry, stop slip casting, what complete gob side entry retaining body of wall connects top operation.
2. one raising gob side entry retaining body of wall according to claim 1 connects top method, and it is characterized in that: the diameter of described floral tube or pertusate flexible pipe (4) is not more than 30mm, the diameter of floral tube or flexible pipe hole (8) is not more than 8mm.
3. one raising gob side entry retaining body of wall according to claim 1 connects top method, it is characterized in that: the horizontal range of lead distance body of wall (5) lateral surface of described floral tube or pertusate flexible pipe (4) is not less than 300mm.
4. one raising gob side entry retaining body of wall according to claim 1 connects top method, it is characterized in that: the described setting rate injecting concrete, yellow mud or accelerated cement in floral tube or pertusate flexible pipe (4) is 15s ~ 120s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510572238.6A CN105089693B (en) | 2015-09-09 | 2015-09-09 | One kind improves gob side entry retaining wall and connects top method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510572238.6A CN105089693B (en) | 2015-09-09 | 2015-09-09 | One kind improves gob side entry retaining wall and connects top method |
Publications (2)
| Publication Number | Publication Date |
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| CN105089693A true CN105089693A (en) | 2015-11-25 |
| CN105089693B CN105089693B (en) | 2017-07-04 |
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| CN201510572238.6A Expired - Fee Related CN105089693B (en) | 2015-09-09 | 2015-09-09 | One kind improves gob side entry retaining wall and connects top method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105604552A (en) * | 2015-12-21 | 2016-05-25 | 冀中能源集团有限责任公司 | Solid material filling mining gob side entry retaining method |
| CN105909307A (en) * | 2016-06-27 | 2016-08-31 | 六盘水师范学院 | Low-coal-seam gob-side entry retaining method |
| CN108590655A (en) * | 2018-03-27 | 2018-09-28 | 山东科技大学 | Assemble the method that wall realizes gob side entry retaining |
| CN109944634A (en) * | 2019-04-19 | 2019-06-28 | 中国矿业大学(北京) | A kind of Seam Roof And Floor filling type goaf filling structure and its placement method |
| CN110700855A (en) * | 2019-09-10 | 2020-01-17 | 太原理工大学 | Method for preventing horizontal dislocation at high roof contact rate of gob-side entry retaining roadside support |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3300167A1 (en) * | 1982-01-08 | 1983-07-21 | Gewerkschaft Eisenhütte Westfalia, 4670 Lünen | Arrangement for working steep deposits, in particular coal seams |
| 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 |
| CN101929342A (en) * | 2010-09-29 | 2010-12-29 | 西安科技大学 | Gob-side entry retaining concrete partition wall construction mold bag and construction method thereof |
| 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 |
| CN102587933A (en) * | 2012-03-26 | 2012-07-18 | 兖州煤业股份有限公司 | Gob-side entry retaining method using prefabricated walls |
-
2015
- 2015-09-09 CN CN201510572238.6A patent/CN105089693B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3300167A1 (en) * | 1982-01-08 | 1983-07-21 | Gewerkschaft Eisenhütte Westfalia, 4670 Lünen | Arrangement for working steep deposits, in particular coal seams |
| 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 |
| CN101929342A (en) * | 2010-09-29 | 2010-12-29 | 西安科技大学 | Gob-side entry retaining concrete partition wall construction mold bag and construction method thereof |
| 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 |
| CN102587933A (en) * | 2012-03-26 | 2012-07-18 | 兖州煤业股份有限公司 | Gob-side entry retaining method using prefabricated walls |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105604552A (en) * | 2015-12-21 | 2016-05-25 | 冀中能源集团有限责任公司 | Solid material filling mining gob side entry retaining method |
| CN105909307A (en) * | 2016-06-27 | 2016-08-31 | 六盘水师范学院 | Low-coal-seam gob-side entry retaining method |
| 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 |
| CN109944634A (en) * | 2019-04-19 | 2019-06-28 | 中国矿业大学(北京) | A kind of Seam Roof And Floor filling type goaf filling structure and its placement method |
| CN110700855A (en) * | 2019-09-10 | 2020-01-17 | 太原理工大学 | Method for preventing horizontal dislocation at high roof contact rate of gob-side entry retaining roadside support |
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| Publication number | Publication date |
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| CN105089693B (en) | 2017-07-04 |
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