CN1896460A - High and low level assembled coal hydraulic stand on roof - Google Patents
High and low level assembled coal hydraulic stand on roof Download PDFInfo
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- CN1896460A CN1896460A CN 200510083941 CN200510083941A CN1896460A CN 1896460 A CN1896460 A CN 1896460A CN 200510083941 CN200510083941 CN 200510083941 CN 200510083941 A CN200510083941 A CN 200510083941A CN 1896460 A CN1896460 A CN 1896460A
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- coal
- coaling
- caving
- opening
- low level
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Abstract
Cover caving coal-exploiting technique is an effective recovery method for super-thick coal bed. Normally, the cover caving coal hydraulic pressure stand has only one coal opening which is set on the ceiling girder and is called high position coaling opening; or which is set on the shield girder and is called middle position coaling opening; or which is set on the tail girder and is called low position coaling opening. This invention integrates the high and low position coaling openings. Thus, coaling can be done both at front and back sides. This invention is fit for 10m super-thick coal bed. It can save coaling-time and increase working face-advancing speed.
Description
1. technical field
The colliery underground mining.
2. background technology
For the super high seam underground mining of thickness greater than 3.5m, the tradition exploitation method is artificial false top separate zone production, not only the stope drift active workings engineering quantity is big, cost is high for this method, and lower leaf top board difficulty is controlled, efficient is low, and the easy spontaneous combustion in goaf is got angry between the productive life simultaneously.Along with science and technology development,, generally adopt whole layer full-seam mining for the super high seam of coal seam thickness less than 5m.And, then adopt top coal caving for the super high seam of coal seam thickness greater than 5m, especially the top coal caving technology has not only been saved cost of winning greatly, and has improved the single face output amount.For example, colliery, Yanzhou company top coal caving work plane in 2004 output reaches 6,400,000 tons, creates national coal mine work area per unit area yield tidemark.
China begins to design the top coal caving hydraulic support from nineteen eighty-two, and carries out pilot production in 1984 in Shenyang, Liaoning.After this, China Higher universities and colleges, R﹠D institution and designing institute have carried out comprehensive discussion and research to the top coal caving method from the production practice to the support Design.Aspect support Design, coal discharge outlet puts in a skylight, develops into tail beam flashboard formula coal discharge outlet by the initial caving shield back timber that puts in a skylight.The major advantage of caving shield Kaitian window-frame type is that the support resistance to overturning is good, and the major advantage of back timber Kaitian window-frame type is that work plane is saved a transporter, production system is simple, and tail beam flashboard formula coal discharge outlet frame type major advantage is that coal discharge outlet is big, and drawing effectiveness is good.
This patent puts in a skylight and the major advantage of tail beam flashboard formula coal discharge outlet in conjunction with back timber, realizes putting coal before and after the support, makes full use of the top-coal caving face support and puts coal characteristics and anterior transporter, saves top coal caving time.(coal seam thickness＞10m) top coal caving has practical reference value widely to super high seam in the realization of this patent.
3. summary of the invention
1) offer on the comprehensive mining hydraulic bracket back timber and put the coal window, the top coal is directly put into the anterior transporter of work plane by putting the coal window.Simultaneously be provided with coal discharge outlet or plate coal discharge outlet at the support tail boom, the top coal is put into the rear portion transporter.
2) high position on support, low level coal discharge outlet be by hydraulic control, and be locking each other, and promptly high-order, low level coal discharge outlet can not be put coal simultaneously.
3) when the top coal was relatively more broken, the back timber coal discharge outlet was in closed condition all the time, and working face extraction technology is undertaken by common top-coal caving face.
4. the specific embodiment
In super high seam caving coal mining work plane, arrange the type sublevel caving hydrau lic support, when drawing interval of support reach, carry out front and back at diverse location and put the coal operation along work plane.Whether carrying out back timber puts coal and should decide according to top coal occurrence condition.Other technologies are with drawing coal technology is identical usually.
Claims (3)
1. a caving roof coal hydraulic support is offered two coal discharge outlets; A high position-meta, a high position-low level.
2. top-coal caving face is put coal before and after realizing simultaneously, saves top coal caving time greatly.
3. two coal discharge outlet lockings each other on the caving roof coal hydraulic support promptly can not be operated two coal discharge outlets simultaneously on a support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510083941 CN1896460A (en) | 2005-07-15 | 2005-07-15 | High and low level assembled coal hydraulic stand on roof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510083941 CN1896460A (en) | 2005-07-15 | 2005-07-15 | High and low level assembled coal hydraulic stand on roof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1896460A true CN1896460A (en) | 2007-01-17 |
Family
ID=37609080
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510083941 Pending CN1896460A (en) | 2005-07-15 | 2005-07-15 | High and low level assembled coal hydraulic stand on roof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1896460A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103291304A (en) * | 2013-06-28 | 2013-09-11 | 中国矿业大学 | Recovery method of super mining height top coal on fully mechanized coal mining face |
| US8590982B2 (en) | 2009-07-10 | 2013-11-26 | Joy Mm Delaware, Inc. | Longwall mining roof supports |
| CN108374681A (en) * | 2018-03-16 | 2018-08-07 | 中国矿业大学(北京) | Put the support equipped method of coal in a kind of achievable top-coal caving face end |
-
2005
- 2005-07-15 CN CN 200510083941 patent/CN1896460A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8590982B2 (en) | 2009-07-10 | 2013-11-26 | Joy Mm Delaware, Inc. | Longwall mining roof supports |
| US9670777B2 (en) | 2009-07-10 | 2017-06-06 | Joy Mm Delaware, Inc. | Longwall mining roof supports |
| CN103291304A (en) * | 2013-06-28 | 2013-09-11 | 中国矿业大学 | Recovery method of super mining height top coal on fully mechanized coal mining face |
| CN108374681A (en) * | 2018-03-16 | 2018-08-07 | 中国矿业大学(北京) | Put the support equipped method of coal in a kind of achievable top-coal caving face end |
| CN108374681B (en) * | 2018-03-16 | 2020-08-07 | 中国矿业大学(北京) | Support matching method capable of realizing end coal caving of top coal caving working face |
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Legal Events
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |