CN101781988A - 'Bottom mining and top dropping' coal mining technology for soft coal bed with firmness coefficient below 1.3 - Google Patents
'Bottom mining and top dropping' coal mining technology for soft coal bed with firmness coefficient below 1.3 Download PDFInfo
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- CN101781988A CN101781988A CN201010109748A CN201010109748A CN101781988A CN 101781988 A CN101781988 A CN 101781988A CN 201010109748 A CN201010109748 A CN 201010109748A CN 201010109748 A CN201010109748 A CN 201010109748A CN 101781988 A CN101781988 A CN 101781988A
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Abstract
The invention relates to a coal mining technology, in particular to a 'bottom mining and top dropping' coal mining technology for a soft coal bed with firmness coefficient below 1.3. The invention solves the problems of low mining efficiency and high mining cost of the soft coal bed. Specifically, supports capable of supporting full thickness are selected according to the thickness of the coal bed first, coal cutters and other relevant supportive devices are arranged, a shoveling plate is installed at the front end of the top beam of each support, the feed of the coal cutters is controlled to cut coal at a bottom layer or a middle layer, the shoveling plate of the support is used to poke and drop down coal at a top layer, and after the coal at the top layer is poked down, the drums of the coal cutters are used to load coal finally and the coal cutting technology is completed. The invention has the advantages of high mining efficiency and low mining cost.
Description
Technical field
The present invention relates to a kind of coal-mining technique, be specially a kind of coal winning technology that the soft seam of firm coefficient below 1.3 " adopted down and put " that is used for.
Technical background
Single longwell, separate zone production are arranged in present longwell comprehensive mechanized coal mining method, once adopt multiple coal-mining methods such as thick entirely, caving coal and big mining height, according to different coal thickness, coal-mining method is also being updated, mechanization degree is progressively improving, coal recovery rate is also improving, for coal enterprise has created favorable economic benefit.Coal winning technology also improves thereupon, and polytype coal-winning machines such as the double-ended shearer that work plane is equipped with, single ended shearer, coal plough have adapted to the exploitation of different-thickness with different solid coefficients coal seam.On the work plane coal cutting technology, feed mode has: open the otch feed; Work plane middle part feed; The feed of cutting sth. askew of work plane head, tail; Various ways such as the direct feed coal cutting of crossheading.
China's various places high seam and super high seam output proportion account for more than 60%, and its coal-mining method has been selected the coal-mining method that adapts with it according to different geological conditionss, coal seam conditions, and is improved in recovery process, has formed the coal-mining method that shows unique characteristics.Particularly relatively on the seam mining of specific conditions the improved place of needs is just arranged at some: 1, the coal seam solid coefficient is below 1.3, and grow broken, joint cleavage, bed integral coal is poor, and the coal seam is thicker.This brisk lower leaf mine coal is thick less, is not suitable for; And it is too big to adopt big mining height once to drop into, and economic benefit is bad.
Summary of the invention
The present invention provides a kind of coal winning technology that is applicable to that soft seam " is adopted down and put " for the problem of the high-efficiency and low-cost exploitation that solves soft seam.
The present invention is realized by following technical scheme, a kind of coal winning technology that is applicable to that the soft seam of firm coefficient below 1.3 " adopted down and put ", be specially, at first select for use and can support complete thick support according to coal seam thickness, arrange coal-winning machine and other corresponding corollary equipment, the back timber front end of support is installed shovel board, control the coal-winning machine feed then and cut bottom coal or middle level coal, utilize the shovel board of support that day-coal is disclosed caving then, after the caving, utilize coal mining machine roller to coaling at last again, finish coal cutting technology.
Compared with prior art, technology of the present invention is at running in the soft seam coal mining construction of thicker, the firm coefficient of mining coal seam below 1.3, and the coal mining machine roller diameter is little, in the time of can not satisfying exploitation.Can adopt method of cutting end caving of the present invention; Caving not in the caving of support rear, saves work plane rear portion scraper plate machine in force piece the place ahead.Realize efficiently low-cost exploitation.
Description of drawings
Fig. 1 is for realizing the work plane arrangement diagram of technology of the present invention
Among the figure: 1-bottom coal, 2-middle level coal, 3-day-coal, 4-shovel board, 5 supports, 6-coal-winning machine, 7-scraper-trough conveyer
The specific embodiment
As schematically shown in Figure 1, a kind of coal winning technology that is applicable to that the soft seam of firm coefficient below 1.3 " adopted down and put ", at first select for use and can support complete thick support 5 according to coal seam thickness, arrange coal-winning machine 6 and other corresponding corollary equipment, the back timber front end of support 5 is installed shovel board 4, controls coal-winning machine 6 feeds then and cuts bottom coal 1 or middle level coal 2, utilize the shovel board 4 of support that day-coal 3 is disclosed caving then, after the caving, utilize coal mining machine roller to coaling at last again, finish coal cutting technology.
Common hydraulic support just can meet the demands,
The coal-winning machine type selecting: because device fabrication and input aspect, single, double flitting diameter of cylinder is less than coal seam thickness.
Single ended shearer: Dd＜H
Double-ended shearer: D1+D2＜H
H in the formula---coal seam thickness;
Dd---single ended shearer diameter of cylinder;
D1, D2---the forward and backward diameter of cylinder of double-ended shearer
Set cap:, try to stop people from fighting each other or when stretching forestope, under the coal shovel of top in the extraordinary shovel board of support front-axle beam installation and processing.Comprise scraper-trough conveyer 7, belt conveyer etc. with support and supporting other equipment of coal-winning machine.
Implementation method in specifically can two:
1) cut end caving: coal-winning machine cuts ground coal in feed, and the shovel board effect on superjacent utilization deadweight, bedding, joint and the support front-axle beam makes the coal seam stride voluntarily, and the position of caving after the caving, utilizes coal mining machine roller to coaling in support the place ahead again, finishes coal cutting technology.
2) cut end caving in cutting: when the coal seam is thicker or when adopting the single ended shearer coal cutting, cut the coal seam, middle part earlier, cut off the portion coal seam again, beam effect makes superjacent stride voluntarily before utilizing deadweight, bedding, joint and support at last, the position of caving is in support the place ahead, after the caving, utilize coal mining machine roller to coaling again, finish coal cutting technology.
Claims (1)
1. coal winning technology that is applicable to that the soft seam of firm coefficient below 1.3 " adopted down and put ", it is characterized in that: at first select for use and can support complete thick support (5) according to coal seam thickness, arrange coal-winning machine (6) and other corresponding corollary equipment, the back timber front end of support (5) is installed shovel board (4), control coal-winning machine (6) feed then and cut bottom coal (1) or middle level coal (2), utilize the shovel board (4) of support that day-coal (3) is disclosed caving then, after the caving, utilize coal mining machine roller to coaling at last again, finish coal cutting technology.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101097487A CN101781988B (en) | 2010-02-04 | 2010-02-04 | 'Bottom mining and top dropping' coal mining technology for soft coal bed with firmness coefficient below 1.3 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101097487A CN101781988B (en) | 2010-02-04 | 2010-02-04 | 'Bottom mining and top dropping' coal mining technology for soft coal bed with firmness coefficient below 1.3 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101781988A true CN101781988A (en) | 2010-07-21 |
| CN101781988B CN101781988B (en) | 2011-10-05 |
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| CN2010101097487A Active CN101781988B (en) | 2010-02-04 | 2010-02-04 | 'Bottom mining and top dropping' coal mining technology for soft coal bed with firmness coefficient below 1.3 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102505942A (en) * | 2011-11-11 | 2012-06-20 | 山西晋城无烟煤矿业集团有限责任公司 | Safe and fast driving method for large-section open-off cut time-by-time tunneling |
| CN103195427A (en) * | 2013-04-09 | 2013-07-10 | 中国矿业大学 | Shovel top and bottom cutting type one-time full-height fully-mechanized mining method for extremely soft thick coal seam |
| CN106014411A (en) * | 2016-05-16 | 2016-10-12 | 中国矿业大学 | Deep coal seam cutting, cracking and mining integrated excavation technology |
-
2010
- 2010-02-04 CN CN2010101097487A patent/CN101781988B/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102505942A (en) * | 2011-11-11 | 2012-06-20 | 山西晋城无烟煤矿业集团有限责任公司 | Safe and fast driving method for large-section open-off cut time-by-time tunneling |
| CN103195427A (en) * | 2013-04-09 | 2013-07-10 | 中国矿业大学 | Shovel top and bottom cutting type one-time full-height fully-mechanized mining method for extremely soft thick coal seam |
| CN106014411A (en) * | 2016-05-16 | 2016-10-12 | 中国矿业大学 | Deep coal seam cutting, cracking and mining integrated excavation technology |
| CN106014411B (en) * | 2016-05-16 | 2018-01-23 | 中国矿业大学 | Deep fractures, which are cut to split, adopts integrated process for stoping |
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| Publication number | Publication date |
|---|---|
| CN101781988B (en) | 2011-10-05 |
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