CN103422870A - Roof supporting method for full super-high seam mining - Google Patents
Roof supporting method for full super-high seam mining Download PDFInfo
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- CN103422870A CN103422870A CN2013103199718A CN201310319971A CN103422870A CN 103422870 A CN103422870 A CN 103422870A CN 2013103199718 A CN2013103199718 A CN 2013103199718A CN 201310319971 A CN201310319971 A CN 201310319971A CN 103422870 A CN103422870 A CN 103422870A
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Abstract
The invention provides a roof supporting method for full super-high seam mining, and belongs to the technical field of coal mining. The roof supporting method for full super-high seam mining mainly solves the problems that in the prior art, after roof caving, a lot of hidden dangers such as water, fire, gas and impact pressure are caused, a large amount of top coal is lost, and secondary recovery and mining cannot be achieved. The roof supporting method for full super-high seam mining comprises the steps of digging a roof supporting roadway (3), installing a frame beam cantilever support (2), installing a protection screen (15), mining a top coal layer of an super-high seam below a cantilever (9), installing a supporting roof screen (16), digging a light-type support working face (13), placing top coal on the light-type support working face, and conveying the top coal away. By means of the roof supporting method for full super-high seam mining, convenience is brought for a goaf to be timely sealed for a long-acting stage, and the hidden spontaneous combustion danger caused by coal left in the goaf is eliminated.
Description
Technical field
The invention belongs to the technology field, be specifically related to super high seam and adopt overall height roof timbering method.
Background technology
The safety of the coal winning technology of coal mining, the rate of recovery of coal resources requires more and more higher, old mine ubiquity ocurrence of coal seam piece section is undesirable, the field with "nine squares" features as poor geologic condition, mine is reformed coal-mining method, is undergone technological transformation and the expansion investments limited fund, and stope is not suitable for generally adopting large longwell (more than 150 meters) to mine and heavy support Sub-Level Caving technology.At present, adopt the mining technology, exist after caving many hidden danger such as being with water, fire, gas and percussive pressure and top coal to lose too many, problem that can't the secondary recovery second mining.
Summary of the invention
The objective of the invention is to solve the problem that prior art exists, provide a kind of more than 12 meters super high seam adopt overall height roof timbering method.
The present invention solves the problems of the technologies described above the technical scheme of taking to be:
Super high seam is adopted overall height roof timbering method, comprises and digs support top tunnel, installing frame girder cantilever support, catch net is installed, and under the exploitation cantilever, the coal seam, top of super high seam, install supporting top net, dig the light hydraulic support work plane, implement light hydraulic support work plane Sub-Level Caving, transport Sub-Level Caving; Be characterized in: the concrete steps of its method are as follows:
(1) dig the support top tunnel
Laterally locate in a distance at edge, exploiting field, top, coal seam, dig two support top tunnels that adapt with frame girder cantilever support cross section;
(2) installing frame girder cantilever support
Frame girder cantilever support is transported into to the support top tunnel, and expansion bracket Tou Yudi lane work plane is concordant; Cut the eye place at stope support arm is installed, support the roof that the palm launches the support works face, described support arm is arranged on the expansion bracket head, supports the palm and is arranged on the support arm external part; Hydraulic prop on frame girder cantilever support is stretched out, make each hydraulic prop hold out against roof;
(3) catch net is installed
Frame guarantee for a person given by a shopkeeper protecting wire net between two frame girder cantilever support expansion bracket heads, catch net is sagging and be fixed on seat earth;
(4) coal seam, top of super high seam under the exploitation cantilever
Under the exploitation cantilever, the coal seam angle that end, ，Shi coal seam, lane work plane top forms ，Gai slope, slope, a coal seam and frame girder cantilever frame bottom plane on earth is 50～70 to spend;
(5) supporting top net is installed
The online end in supporting top is fixed on to two frame girder cantilever stent support bottoms, the slope tension that under suitable the 4th step exploitation cantilever of supporting top net, the coal seam, top of super high seam forms, its lower end is fixed on seat earth;
(6) dig the light hydraulic support work plane
In the bottom, coal seam, the above light hydraulic support work plane of digging of seat earth, advance the degree of depth suitable with jib-length;
(7) implement light hydraulic support work plane Sub-Level Caving
The movable light support, the work plane Sub-Level Caving;
(8) transport Sub-Level Caving
By the transportation lane, will put a coal and transport, work plane is pushed ahead to the cantilever root;
(9) reach frame girder cantilever support
Frame girder cantilever support is advanced in the support top tunnel, and concordant with the rear end, coal seam to the cantilever rear end, the while is mobile catch net lower end fixed point backward;
(10) repeat above step (4) to (9), until support top tunnel terminal;
Laterally move to the end, coal seam on work plane, repeating step (1) is to (10), until has all adopted in the coal seam in the face length scope.
The present invention compared with prior art, has following beneficial effect:
(1) owing to having adopted frame girder cantilever support, being convenient to goaf, to carry out in time the long-acting stage airtight, the transporting and betting of facility and material.Such as water filling, slip casting, gas injection, filling yellow mud, build that to build partition wall airtight;
(2) can effectively remove the dead coal of hard coal of the loose float coal in top, coal seam and top board angle eaves, eradicate goaf and leave over the spontaneous combustion hidden danger that the folder coal causes;
(3) can effectively increase the emergency exit that guarantees the goaf work plane, prevention goaf gushing water and personnel's timely safe escape;
(4) ore deposit of having created minimum distance for the management of roof presses rock to move the convenient operating condition of observation and support top, caving;
(5) improve and enlarged effective way and the scope of drawing-off gas, improved the anti-disaster ability of mine.
The accompanying drawing explanation
Fig. 1 is coal-face top view of the present invention;
Fig. 2 is A in Fig. 1-A sectional drawing.
In figure: 1-goaf; 2-frame girder cantilever support; 3-support top tunnel; 5-along end fully mechanized coal face transportation lane; 6-support and slap; 7-support arm; 8-roof; 9-cantilever; 10-hydraulic prop; 11-angle; 12-coal seam; 13-light hydraulic support work plane; 14-seat earth; 15-catch net; 16-supporting top net; 17-expansion bracket head.
The specific embodiment
As depicted in figs. 1 and 2, super high seam is adopted overall height roof timbering method, comprise and dig support top tunnel 3, installing frame girder cantilever support 2, install catch net 15, the coal seam, top of 9 times super high seams of exploitation cantilever, supporting top net 16 is installed, dig light hydraulic support work plane 13, implement light hydraulic support work plane Sub-Level Caving, transport Sub-Level Caving; Be characterized in: the concrete steps of its method are as follows:
(1) dig support top tunnel 3
Laterally at a distance of 15 meters, dig two support top tunnels 3 that adapt with frame girder cantilever support cross section at edge, exploiting field, top, coal seam;
(2) installing frame girder cantilever support 2
Frame girder cantilever support 2 is transported into to support top tunnel 3, and expansion bracket head 17Yu Di lane work plane is concordant; Cut the eye place at stope support arm 7 is installed, support the roof 8 that the palm 6 launches the support works face, described support arm 7 is arranged on expansion bracket head 17, supports the palm 6 and is arranged on the support arm external part; Hydraulic prop 10 on frame girder cantilever support 2 is stretched out, make each hydraulic prop hold out against roof 8;
(3) catch net 15 is installed
Frame guarantee for a person given by a shopkeeper protecting wire net 15 between two frame girder cantilever support expansion bracket heads 17, catch net is sagging and be fixed on seat earth 14;
(4) coal seam, top of super high seam 12 under the exploitation cantilever
Under the exploitation cantilever, the coal seam angle 11 that end, ，Shi coal seam, lane work plane top forms ，Gai slope, slope, a coal seam and frame girder cantilever frame bottom plane on earth is 60 degree;
(5) supporting top net 16 is installed
The online end in supporting top is fixed on to two frame girder cantilever stent support bottoms, the slope tension that under suitable the 4th step exploitation cantilever of supporting top net 16, the coal seam, top of super high seam forms, its lower end is fixed on seat earth 14;
(6) dig light hydraulic support work plane 13
12 bottoms in coal seam, seat earth is dug light hydraulic support work plane 13 more than 14, advance the degree of depth suitable with cantilever 9 length;
(7) implement light hydraulic support work plane Sub-Level Caving
The movable light support, the work plane Sub-Level Caving;
(8) transport Sub-Level Caving
By along end fully mechanized coal face transportation lane 5, will put a coal and transport, work plane is pushed ahead to the cantilever root;
(9) reach frame girder cantilever support 2
Frame girder cantilever support is advanced in the support top tunnel, and concordant with the rear end, coal seam to expansion bracket head 17, the while is mobile catch net lower end fixed point backward;
(10) repeat above step the four step to the nine steps, until support top tunnel terminal;
Laterally move to the end, coal seam on work plane, the repeating step first step to the ten steps, until has all adopted in the coal seam in the face length scope.
Claims (1)
1. super high seam is adopted overall height roof timbering method, comprise and dig support top tunnel (3), installing frame girder cantilever support (2), catch net (15) is installed, the coal seam, top of the lower super high seam of exploitation cantilever (9), install supporting top net (16), digs light hydraulic support work plane (13), implement light hydraulic support work plane Sub-Level Caving, transport Sub-Level Caving; It is characterized in that: the concrete steps of its method are as follows:
(1) dig support top tunnel (3)
Laterally locate in a distance at edge, exploiting field, top, coal seam, dig two the support top tunnels (3) that adapt with frame girder cantilever support (2) cross section;
(2) installing frame girder cantilever support (2)
Frame girder cantilever support (2) is transported into to support top tunnel (3), and expansion bracket head (17) Yu Di lane work plane is concordant; Cut the eye place at stope support arm (7) is installed, support the roof (8) that the palm (6) launches the support works face, it is upper that described support arm (7) is arranged on expansion bracket head (17), supports the palm (6) and be arranged on the support arm external part; Hydraulic prop (10) on frame girder cantilever support (2) is stretched out, make each hydraulic prop hold out against roof (8);
(3) catch net (15) is installed
Frame guarantee for a person given by a shopkeeper protecting wire net (15) between two frame girder cantilever support expansion bracket heads (17), catch net is sagging and be fixed on seat earth (14);
(4) coal seam, top of super high seam (12) under the exploitation cantilever
Under the exploitation cantilever, the coal seam angle (11) that end, ，Shi coal seam, lane work plane top forms ，Gai slope, slope, a coal seam and frame girder cantilever frame bottom plane on earth is 50～70 to spend;
(5) supporting top net (16) is installed
The online end in supporting top is fixed on to two frame girder cantilever stent support bottoms, the slope tension that under suitable the 4th step exploitation cantilever of supporting top net (16), the coal seam, top of super high seam forms, its lower end is fixed on seat earth (14);
(6) dig light hydraulic support work plane (13)
(12) bottom in coal seam, the above light hydraulic support work plane (13) of digging of seat earth (14), advance the degree of depth suitable with cantilever (9) length;
(7) implement light hydraulic support work plane Sub-Level Caving
The movable light support, the work plane Sub-Level Caving;
(8) transport Sub-Level Caving
By along end fully mechanized coal face transportation lane (5), will put a coal and transport, work plane is pushed ahead to the cantilever root;
(9) reach frame girder cantilever support (2)
Frame girder cantilever support is advanced in the support top tunnel, and concordant with the rear end, coal seam to expansion bracket head (17), the while is mobile catch net lower end fixed point backward;
(10) repeat above step the four step to the nine steps, until support top tunnel terminal;
Laterally move to the end, coal seam on work plane, the repeating step first step to the ten steps, until has all adopted in the coal seam in the face length scope.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103953373A (en) * | 2014-05-08 | 2014-07-30 | 张新怀 | Temporary support device for laneway roof caving region |
| CN108979682A (en) * | 2018-07-17 | 2018-12-11 | 山东科技大学 | Novel thick seam slicing system bottom plate spreads interconnection device and paving networking method automatically |
| CN116950687A (en) * | 2023-09-20 | 2023-10-27 | 太原西北二环高速公路发展有限公司 | Tunnel supporting system penetrating through multilayer goaf and construction method thereof |
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| RU2018667C1 (en) * | 1992-01-22 | 1994-08-30 | Томашевский Людвиг Павлович | Method for roof control in mounting slot |
| CN1469029A (en) * | 2002-07-19 | 2004-01-21 | 罗崇福 | Coal cutting method for inclined thick and very thick coal bed |
| CN101761338A (en) * | 2010-03-13 | 2010-06-30 | 中国矿业大学 | Gob-side entry retaining method of a solid filling coal mining half-section one-leg shed |
| CN101832150A (en) * | 2010-04-21 | 2010-09-15 | 林立荣 | Ultra thick coal bed fully mechanized underground mining protection process and special protection supporting frame |
| CN101915101A (en) * | 2010-08-20 | 2010-12-15 | 天地科技股份有限公司 | Method of mining coal from heavy pitch thick coal seam |
| CN102562106A (en) * | 2011-08-20 | 2012-07-11 | 高九华 | Super high coal seam mining method by means of filling long arms at high positions |
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2013
- 2013-07-26 CN CN201310319971.8A patent/CN103422870B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2018667C1 (en) * | 1992-01-22 | 1994-08-30 | Томашевский Людвиг Павлович | Method for roof control in mounting slot |
| CN1469029A (en) * | 2002-07-19 | 2004-01-21 | 罗崇福 | Coal cutting method for inclined thick and very thick coal bed |
| CN101761338A (en) * | 2010-03-13 | 2010-06-30 | 中国矿业大学 | Gob-side entry retaining method of a solid filling coal mining half-section one-leg shed |
| CN101832150A (en) * | 2010-04-21 | 2010-09-15 | 林立荣 | Ultra thick coal bed fully mechanized underground mining protection process and special protection supporting frame |
| CN101915101A (en) * | 2010-08-20 | 2010-12-15 | 天地科技股份有限公司 | Method of mining coal from heavy pitch thick coal seam |
| CN102562106A (en) * | 2011-08-20 | 2012-07-11 | 高九华 | Super high coal seam mining method by means of filling long arms at high positions |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103953373A (en) * | 2014-05-08 | 2014-07-30 | 张新怀 | Temporary support device for laneway roof caving region |
| CN108979682A (en) * | 2018-07-17 | 2018-12-11 | 山东科技大学 | Novel thick seam slicing system bottom plate spreads interconnection device and paving networking method automatically |
| CN116950687A (en) * | 2023-09-20 | 2023-10-27 | 太原西北二环高速公路发展有限公司 | Tunnel supporting system penetrating through multilayer goaf and construction method thereof |
| CN116950687B (en) * | 2023-09-20 | 2023-12-01 | 太原西北二环高速公路发展有限公司 | Tunnel supporting system penetrating through multilayer goaf and construction method thereof |
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