CN1061070A - Method of composity coal mining - Google Patents
Method of composity coal mining Download PDFInfo
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- CN1061070A CN1061070A CN 90108648 CN90108648A CN1061070A CN 1061070 A CN1061070 A CN 1061070A CN 90108648 CN90108648 CN 90108648 CN 90108648 A CN90108648 A CN 90108648A CN 1061070 A CN1061070 A CN 1061070A
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- coal
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- caving
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Abstract
A kind of method of composity coal mining can improve per unit area yield, efficient, lump coal rate and the safe coefficient of high seam all-time high mining face.And can improve the high seam resource recovery; Reduce mining roadway drivage ratio and material consumption; Alleviate labor strength; Reduce the face moving number of times, can make the work plane yearly productive capacity reach 2,200,000 tons/year.
Description
Belong to the mining method, be applicable to about 6 meters of thickness, hardness f is the work plane of 2～4 gently inclined seam full-seam mining, also can be used for the deposit mining of other conditional likelihood.
Known underground longwall mining method for extraction has two kinds of exploitation methods of separate zone production and high seam top coal caving.Because thick seam slicing system method work plane drivage ratio height, per unit area yield are subjected to the restriction of lift height and fltting speed, in order to improve production capacity, accelerate face propulsion speed, become a kind of effective means, but the employing of this means makes face moving frequent, recommends and tunnel dynamic pressure and production safety for considering that work plane is pressed simultaneously, the last lower leaf certain time interval of having to again keep on connecting time continues work plane and is tending towards nervous.Therefore, the coal of high seam caving in recent years full-seam mining process for stoping, the work plane suitable in many conditions is applied, and normally adopts the positive coal cutting of coal-winning machine, work plane adopts forward and backward transporter to transport work plane coal breakage and caving coal amount respectively in the same way, and the working surface production ability is improved.But the requirement that can't satisfy Coal Face Passing Through coal amount owing to the present transport capacity of crossheading list transportation system on the working surface production peak makes the production capacity of whole caving mining technology restricted, and known caving mining technology is owing to be provided with the broken device for coal in back, make the coarse coal in the coal of top can't put into work plane transportation system effectively, thereby the coal recovery rate of stope is reduced.And present single air return system can not be got rid of the methane accumulation of work plane old man side effectively, and safety in production has brought certain difficulty to work plane.
The objective of the invention is for overcoming the above-mentioned weak point of known underground longwall mining method for extraction, adopting up and down, the two lane transportation systems of crossheading increase transport capacity; Adopt two lanes return air to reduce old coal and coaling, play the effect that improves coal recovery rate, thereby the work plane annual capacity is got a greater increase.
Description of drawings: in Fig. 1
(1) upper and lower crossheading adhesive tape conveyor; (2) low tension switch group;
(3) work plane elevating conveyor; (4) crushing engine;
(5) face end support; (6) work plane scratch board conveyor;
(7) the support shield formula caving roof coal hydraulic support of practicing backdoorism; (8) working surface coal mining machine;
(9) caving coal scratch board conveyor; (10) caving coal coal-winning machine;
(24), crossheading under the work plane; (25), tailentry;
(26), return air connection roadway.
In Fig. 2: (11), can move up and down and stretch put the coal plate.
In Fig. 3: (12), front-axle beam; (13), back timber; (14), column; (15), base; (16), front rod; (17), shielding is floated; (18), back link; (19), tail boom; (20), double-telescopic upright post; (21), put the coal jack; (22), perforator; (23), coal discharge outlet.
The technology of method of composity coal mining of the present invention constitutes: working face is selected powerful double-ended shearer (8), (also can adopt and singly roll simple coal-winning machine) coal breakage, coaling, and transport coal to upper crossheading (25), (also can transport lower crossheading to) by working face scratch board conveyor (6); Face end support (5) supporting is adopted in the upper and lower termination of working face; Working face adopts support shield formula caving roof coal hydraulic support (7) supporting of practicing backdoorism, and by the coal discharge outlet (23) of this support lumpiness is put into Sub-Level Caving scratch board conveyor (9) less than 2 meters top coal, can lump coal be carried out the secondary extrusion fragmentation for lumpiness by two double-telescopic upright posts (20) on the support tail boom greater than 2 meters coal cinder; Broken under the top coal of top of the trellis can support repeatedly 300 tons to 440 tons setting load, still can not broken top coal through extruding to some, the perforator of setting up on the useable holder (22) comes perforating, and it is broken to adopt the static(al) explosion. Can be by caving at the coal of Sub-Level Caving scratch board conveyor old man one side to landing Coal coal-winning machine (10) is coaling, and also can carry out tertiary crushing to coarse coal, thereby greatly improves the rate of recovery of working face coal resources. Sub-Level Caving coal-winning machine (10) adopts single ended shearer comparatively suitable (also can adopt two simple coal-winning machines that roll). The Sub-Level Caving scratch board conveyor transports the top coal to crossheading under the working face (24) (also can transport upper crossheading to), then by under the working face (on) adhesive tape conveyor (1) of crossheading is transported to exploiting field fortune coal measures system with coal. The double assistant conveyance tunnel of doing of crossheading under the working face (24).
The fundamental procedure of method of composity coal mining of the present invention is: the forestope that working surface coal mining machine (8) has cut top cutter after-poppet stretches out, supporting roof (coal); After coal-winning machine (8) cut the mansion cutter, the forestope that begins to contract moved support (7); When advancing, unit begins to move work plane scratch board conveyor (6) after 15 meters; Working surface coal mining machine begins to cut and begins the caving coal when two cutter coals cut to 15～20 meters; The caving coal can adopt Zigzag type caving mode at interval, promptly puts first and third, five earlier ... number put by the odd number frame always, then put second, four, six then ... number put by the even numbers frame always, also can adopt other program to put coal; Put coal length when reaching requirement at work plane, the coal of the broken in the same way dress old man of caving coal coal-winning machine (10) hysteresis working surface coal mining machine (8) one segment distances side, cling to caving coal coal-winning machine (10) on one's trail and move frame, draw caving coal scratch board conveyor (9), the face one cover coal mining operation of finishing the work.
Implement the present invention, can in the coal seam of seam hardness F=2～4, arrange the single stope of a full-seam mining about 6 meters of the coal seam thicknesses of hanging down the biogas mine.Crossheading can be dug into 12.55 square metres big section list lanes under the work plane, is used for air intake assistant conveyance and top coal transmission; Crossheading is 2 return aircoursies on the work plane, the double face coal transmission tunnel of working in return air, and another is gone up crossheading and specializes in return air usefulness, and two return airways are made a call to a return air connection roadway (26) every 50 meters, make distinguished and admirable unblocked.The work plane coal breakage is selected MXA～600 type double-ended shearers for use, and caving coal coal-winning machine is selected the MLS single ended shearer for use.Face conveyor and caving coal transporter all adopt SGB～764/264 scratch board conveyor, and crossheading is all selected LPS～1000 crushing engines, SZB～764/132 elevating conveyor, DSP～764/1000 belt conveyer for use up and down, and are equipped with two cover electric fixturess; Work plane selects for use the ZFS5200/16/32B type after the improvement to support, the formula hydraulic support stand is practiced backdoorism in shielding.The worker who arranges by above-mentioned requirements use face, and hour transport capacity can reach 1400 tons, and the work plane annual capacity can reach 2,200,000 tons, can realize highly efficient and productive, high lump rate, high-recovery, low drivage ratio, low consumption, hang down labour intensity; Reduce the face moving number of times; Production safety is reliable, comprehensive benefit the best.
The invention has the advantages that working face output height; Stope efficiency and lump coal rate can be improved, and high seam exploiting field coal recovery rate can be improved; Reduce mining roadway drivage ratio and material consumption, alleviate labor strength, reduce the face moving number of times; From process for stoping and roadway workface cloth be set up the ventilation that solved high seam full-seam mining, transportation, broken coal, etc. technical problem, thereby realize safety in production.
Claims (5)
1, a kind of by broken device for coal, the work plane scratch board conveyor, the single face four even formulas that crossheading transporter, force piece, roadway workface etc. partly constitute are comprehensively adopted the machine method, it is characterized in that same work plane is equipped with working surface coal mining machine (8) and the caving coal is adopted (10) two broken device for coal of machine; Work plane is laid face conveyor (6) and (9) two scratch board conveyors of caving coal transporter; Face up and down trough is respectively established a cover coal conveyer (1); The work plane pick has two return aircoursies (25); And the formula hydraulic support (7) of practicing backdoorism of the support shield with perforating device and broken coal function is housed at work plane.
2, a kind of performing comprehensive coal mining method as claimed in claim 1 is characterized in that work plane is adopted powerful double-ended shearer (8) by device for coal, and the broken device for coal of the caving coal behind the work plane is selected single ended shearer (10) for use.
3, performing comprehensive coal mining method as claimed in claim 1 is characterized in that work plane coal breakage and caving coal respectively adopt a cover scratch board conveyor to transport in opposite directions, and face up and down trough is respectively established a belt conveyer (1) fortune coal.
4, performing comprehensive coal mining method as claimed in claim 1, it is characterized in that being equipped with on the work plane sublevel caving hydrau lic support (7) electric drill can execute from the static(al) explosion top coal perforating, and be provided with two double-telescopic upright posts (20) at the support tail boom, can carry out the secondary extrusion fragmentation greater than 2 meters coal cinder lumpiness.
5, performing comprehensive coal mining method as claimed in claim 1 is characterized in that the work plane pick has two return airways (25), and makes a call to a horizontal river (26) every a segment distance, can reach good ventilation effect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90108648 CN1061070A (en) | 1990-10-29 | 1990-10-29 | Method of composity coal mining |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90108648 CN1061070A (en) | 1990-10-29 | 1990-10-29 | Method of composity coal mining |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1061070A true CN1061070A (en) | 1992-05-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90108648 Pending CN1061070A (en) | 1990-10-29 | 1990-10-29 | Method of composity coal mining |
Country Status (1)
| Country | Link |
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| CN (1) | CN1061070A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN102444401A (en) * | 2011-11-28 | 2012-05-09 | 袁树来 | Coal mining method by filling on blasting mining face of thin coal seam and relevant equipment |
| CN111271116A (en) * | 2020-04-03 | 2020-06-12 | 荆门怡盛源环保科技有限公司 | Belt conveyor of coal mining roadway and installation method |
| CN111379561A (en) * | 2020-04-07 | 2020-07-07 | 北京中矿创新联盟能源环境科学研究院 | Coal mining system and pillar-free self-entry mining method based on same |
-
1990
- 1990-10-29 CN CN 90108648 patent/CN1061070A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN101832150B (en) * | 2010-04-21 | 2013-02-13 | 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 |
| CN101915101B (en) * | 2010-08-20 | 2012-07-25 | 天地科技股份有限公司 | Method of mining coal from heavy pitch thick coal seam |
| CN102444401A (en) * | 2011-11-28 | 2012-05-09 | 袁树来 | Coal mining method by filling on blasting mining face of thin coal seam and relevant equipment |
| CN111271116A (en) * | 2020-04-03 | 2020-06-12 | 荆门怡盛源环保科技有限公司 | Belt conveyor of coal mining roadway and installation method |
| CN111379561A (en) * | 2020-04-07 | 2020-07-07 | 北京中矿创新联盟能源环境科学研究院 | Coal mining system and pillar-free self-entry mining method based on same |
| CN111379561B (en) * | 2020-04-07 | 2021-10-29 | 北京中矿创新联盟能源环境科学研究院 | Coal mining system and pillar-free self-entry mining method based on same |
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