CN102061922B - Method for carrying out comprehensive mechanical coal mining and continuous propulsion mining on split and merged coal beds - Google Patents
Method for carrying out comprehensive mechanical coal mining and continuous propulsion mining on split and merged coal beds Download PDFInfo
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- CN102061922B CN102061922B CN201010530699A CN201010530699A CN102061922B CN 102061922 B CN102061922 B CN 102061922B CN 201010530699 A CN201010530699 A CN 201010530699A CN 201010530699 A CN201010530699 A CN 201010530699A CN 102061922 B CN102061922 B CN 102061922B
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Abstract
The invention relates to a method for carrying out comprehensive mechanical coal mining and continuous propulsion mining on split and merged coal beds, which is characterized by dividing the whole mining process of the split and merged coal beds into two stages: an actual mining stage of layered coal beds above a split area and an actual mining stage for carrying out continuous propulsion mining on thick coal beds at a merged area and layered coal beds below the split area. A medium thick coal bed hydraulic supportis used for carrying out actual mining on the layered coal beds above the split area, and a grand mining high hydraulic support is used for carrying out actual mining on the thick coal beds at the merged area and the layered coal beds below the split area; open-off cut is conducted only once around a split line and a merged line; the mining height of the hydraulic support is required to be both lowered and raised to carry out 'height-differing mining' to realize the comprehensive mechanical coal mining and continuous propulsion mining on coal beds of different thicknesses. By utilizing he method provided by the invention, the number of open-off cuts, finishing cuts and working surfaces for mining the coal beds under such geological conditions can be effectively reduced, the number of standby collar pillars is greatly reduced, the recovery ratio is improved, and benefits of mining the split and merged coal beds are remarkably improved, thus the method provided by the invention has significance in widespread promotion.
Description
Technical field
The present invention relates to a kind of coal seam and combine the method for adopting continuous propelling exploitation, seam mining is deposited in the complicated geological tax that is particularly useful for colliery bifurcated merging.
Background technology
Coal seam, mining area mode of occurence is complicated in the Huaibei, China Anhui, Yanzhou, Xuzhou etc.; Tax is deposited and is the bifurcated merging phase more; General trend is that two merges, middle bifurcated, and interlamellar spacing is between 0～12.75m, about average 8m; There is this type of geological conditions coal seam of several hundred million t in these mining areas, and the safe and efficient back production in this type of coal seam is significant.
Bifurcated merges geological conditions coal seam prior art: back production mode stage by stage and caving coal mining mode.Adopt back production mode stage by stage, not only roadway arrangement is complicated, and reserved coal pillar is many, and recovery ratio is low, and single face output is low, and has increased the face moving number of times, has improved ton coal cost of production; Problems such as adopt the top coal caving mode, exist recovery ratio low, mixed cash amount is big, and ash content is high, and float coal is natural easily are unfavorable for coal quality control, gas and mine fire control etc.As shown in Figure 1; Y-track is L, and the merging line is L ', adopts prior art stage by stage during back production; Need reserved coal pillar 3; Being bifurcated section zone lower leaf open-off cut 7 receives and does between the eye 2 and merge regional high seam open-off cut 1 and the lower leaf of bifurcation region section to receive between the work 6 20～30m reserved coal pillar 3 will be arranged with merging regional high seam, has caused the serious waste of coal resources, greatly reduces the rate of extraction in coal seam; Recovery system is divided into and merges regional high seam d
1Recovery phase I merges regional high seam d
2Recovery phase III, bifurcation region higher slice coal seam recovery phase II, bifurcation region lower leaf coal seam recovery phase IV; Each stage all is furnished with independently to cut eye and receive the work eye and (merges regional high seam open-off cut 1, merge regional high seam and receive work eye 2, bifurcation region higher slice coal seam open-off cut 4; Bifurcation region higher slice coal seam is received and is made eye 5; Bifurcation region lower leaf coal seam open-off cut 6, bifurcation region lower leaf coal seam are received and are made eye 7), face of 4 task face equipment removal of home is arranged.Therefore prior art merges the coal seam to bifurcated and exploits and have that recovery ratio is low, mining system is complicated and problem such as producing cost height, has greatly limited the safety and high efficiency that bifurcated merges the coal seam.
Summary of the invention
Technical problem: the objective of the invention is to overcome the weak point in the prior art, provide the bifurcated that a kind of exploitation method is simple, fltting speed is fast, recovery ratio is high, producing cost is low, time saving and energy saving to merge the comprehensive method of adopting continuous propelling exploitation in coal seam.
Technical scheme: bifurcated of the present invention merges the coal seam and combines the method for adopting continuous propelling exploitation:
A, the layering coal seam on bifurcation region are offered the higher slice coal seam apart from Y-track 8～10m place and are cut eye, and mining equipment is installed, and advance from the higher slice coal seam toward merging the line direction, and work plane gets into bifurcation region higher slice coal seam recovery phase;
B, when the advance of the face to distance merges line 8～10m place, stop to advance, do bifurcation region higher slice coal seam and receive and make eye, completion bifurcation region higher slice coal seam recovery phase;
C, in merging regional high seam, offer and merge regional high seam and cut eye, mining equipment is installed, advance, get into and merge regional high seam d toward the Y-track direction
1With the continuous propelling recovery phase in bifurcation region lower leaf coal seam, work plane advances toward merging the line direction, gets into to merge regional high seam d
2
When the advance of the face to Y-track, progressively reduce the height of hydraulic support; To be suitable for the mining height in lower leaf coal seam; Every propelling one cutter of work plane; It is 0.12～0.15m that the frame height falls in hydraulic support, reduces to the thickness in bifurcation region lower leaf coal seam until the hydraulic support height, and confirms to fall the length of the advance of the face in the frame process;
When the advance of the face was s apart from the length that merges line, hydraulic support progressively began to rise frame, every propelling one cutter of work plane, and it is 0.12～0.15m that hydraulic support rises the frame height, rises to until the hydraulic support height to merge regional high seam d
2Thickness;
D, when the advance of the face to design in advance when stopping adopting the position, the high seam of doing to merge the zone is received and is made eye, accomplishes the continuous propelling recovery phase that merges regional high seam and bifurcation region lower leaf coal seam.
Beneficial effect:
1, the present invention adopts the method that work plane advances continuously; Merging regional high seam recovery phases and bifurcation region lower leaf coal seam recovery phase to two is merged into and merges regional high seam and bifurcation region lower leaf coal seam advances recovery phase continuously; Do not need the reserved coal pillar of 20～30m; Continuous propulsioning face just can many back production coal 50000t, has fundamentally solved resource serious waste problem, has improved coal seam recovery ratio under the complex geological condition greatly.
2, open-off cut, receipts work eye number and the removal of home number of times of falling the face have been reduced.Merging at bifurcated only needs to offer 2 at top and end and cuts eye in the continuous progradation in coal seam; Carrying out the 2 task face equipment face of moving gets final product; Compared with prior art can reduce out 2 and cut eye; The removal of home of 2 task face equipment is face, has reduced 2 times and has received work eye technology, has saved open-off cut greatly, has received work eye expense and working face equipment removal charge.
3, fundamentally shorten digging and take over the time.Make the eye number of times owing to reduce 2 open-off cuts of digging, 2 task faces removal of home number of times and 2 task faces receipts; (comprise last work plane receipts work eye according to what a work plane of current complete arrangement; Supporting of this work plane open-off cut digging and operations such as working face equipment removal of home, installation) be to calculate over 4 months average time, can save 8 months take over the time at least.
Description of drawings
Fig. 1 is a prior art production practice tunnel sketch map;
Fig. 2 is production practice skill tunnel sketch map among the present invention.
Fig. 3 is " uprising exploitation " technological parameter figure among the present invention.
Among the figure: 1-merges regional high seam open-off cut, and 2-merges regional high seam and receives work eye, 3-reserved coal pillar, 4-bifurcation region higher slice coal seam open-off cut; 5-bifurcation region higher slice coal seam is received and is made eye, 6-bifurcation region lower leaf coal seam open-off cut, and 7-bifurcation region lower leaf coal seam is received and is made eye; The L-Y-track, L '-merging line, a-bifurcation region higher slice coal seam; B-dirt band layer, c-bifurcation region lower leaf coal seam, d
1, d
2-front and rear sections merges regional high seam, e-bifurcation region higher slice coal seam goaf, and advance of the face distance in the frame process falls in s-, and (liter) frame height falls in the every propelling one cutter hydraulic support of h-work plane, and the I-leading portion merges regional high seam d
1Recovery phase, III-back segment merge regional high seam d
2Recovery phase, II-bifurcation region higher slice coal seam recovery phase, the IV-leading portion merges regional high seam d
1, back segment merges regional high seam d
2Advance recovery phase continuously with bifurcation region lower leaf coal seam.
The specific embodiment
Below in conjunction with accompanying drawing embodiments of the invention are further described:
A, the layering coal seam a on bifurcation region are that 8～10m place offers the higher slice coal seam and cuts eye 4 apart from Y-track L, and mining equipment is installed, and advance from the higher slice coal seam toward merging line L ' direction, and work plane gets into bifurcation region higher slice coal seam recovery phase II:
B, stop to advance when line L ' is 8～10m place, do bifurcation region higher slice coal seam and receive and make eye 5 when the advance of the face to distance merges, completion bifurcation region higher slice coal seam recovery phase II, the roof strata inbreak is bifurcation region higher slice coal seam goaf e;
C, in merging regional high seam d, offer and merge regional high seam and cut eye 1, mining equipment is installed, advance, get into leading portion and merge regional high seam d toward Y-track L direction
1With the continuous propelling recovery phase IV of bifurcation region lower leaf coal seam c, work plane advances toward merging line L ' direction, gets into back segment and merges regional high seam d
2
When the advance of the face progressively reduces the height of hydraulic support during to Y-track L; Being suitable for the mining height of lower leaf coal seam c, every propelling one cutter of work plane, it is 0.12～0.15m that frame height h falls in hydraulic support; Reduce to the thickness of bifurcation region lower leaf coal seam c until the hydraulic support height; And confirm to fall the length s of the advance of the face in the frame process, during exploitation bifurcation region lower leaf coal seam c, face roof is dirt band layer b;
When the advance of the face was s apart from the length that merges line L ', hydraulic support progressively began to rise frame, every propelling one cutter of work plane, and it is 0.12～0.15m that hydraulic support rises frame height h, rises to until the hydraulic support height to merge regional high seam d
2Thickness;
D, when the advance of the face to design in advance when stopping adopting the position, the high seam of doing to merge the zone is received and is made eye 2, accomplishes the continuous propelling recovery phase IV that merges regional high seam and bifurcation region lower leaf coal seam.
Claims (1)
1. a bifurcated merges the comprehensive method of adopting continuous propelling exploitation in coal seam, and its characteristic comprises the steps:
A, the layering coal seam (a) on bifurcation region are offered the higher slice coal seam apart from Y-track (L) 8～10m place and are cut eye (4); Mining equipment is installed; Advance from the higher slice coal seam toward merging line (L ') direction, work plane gets into bifurcation region higher slice coal seam recovery phase (II);
B, when the advance of the face to distance merges line (L ') 8～10m place, stop to advance, do bifurcation region higher slice coal seam and receive and make eye (5), completion bifurcation region higher slice coal seam recovery phase (II);
C, in merging regional high seam (d), offer and merge regional high seam and cut eye (1), mining equipment is installed, advance, get into leading portion and merge regional high seam (d toward Y-track (L) direction
1) with the continuous propelling recovery phase (IV) in bifurcation region lower leaf coal seam (c), work plane advances toward merging line (L ') direction, gets into back segment and merges regional high seam (d
2);
Progressively reduce the height of hydraulic support when the advance of the face to Y-track (L); To be suitable for the mining height of lower leaf coal seam (c); Every propelling one cutter of work plane; It is 0.12～0.15m that frame height (h) falls in hydraulic support, reduces to the thickness in bifurcation region lower leaf coal seam (c) until the hydraulic support height, and confirms to fall the length (s) of the advance of the face in the frame process;
When the advance of the face is the length (s) of the advance of the face apart from the length that merges line (L '); Hydraulic support progressively begins to rise frame; Every propelling one cutter of work plane, it is 0.12～0.15m that hydraulic support rises frame height (h), rises to until the hydraulic support height to merge regional high seam (d
2) thickness;
D, when the advance of the face to design in advance when stopping adopting the position, the high seam of doing to merge the zone is received and is made eye (2), accomplishes the continuous propelling recovery phase (IV) that merges regional high seam and bifurcation region lower leaf coal seam.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201010530699A CN102061922B (en) | 2010-10-26 | 2010-10-26 | Method for carrying out comprehensive mechanical coal mining and continuous propulsion mining on split and merged coal beds |
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| CN201010530699A CN102061922B (en) | 2010-10-26 | 2010-10-26 | Method for carrying out comprehensive mechanical coal mining and continuous propulsion mining on split and merged coal beds |
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| CN102061922B true CN102061922B (en) | 2012-10-24 |
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Families Citing this family (6)
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| CN102797463B (en) * | 2012-08-31 | 2014-10-29 | 中国矿业大学 | Method for determining automatic coal cutting trajectory of coal cutter with working surface passing arc fold |
| CN106522951A (en) * | 2016-11-22 | 2017-03-22 | 中国神华能源股份有限公司 | Mining technology for lower slice fully-mechanized coal mining face passing through concentrated coal pillar of higher slice coal seam |
| CN109973091B (en) * | 2019-02-20 | 2021-08-24 | 北京昊华能源股份有限公司 | Coal mining method for multi-branch coal body |
| CN109869151B (en) * | 2019-04-04 | 2022-03-04 | 中国矿业大学(北京) | Cooperative operation method for realizing working face mining and protecting coal pillar recovery |
| CN109915144B (en) * | 2019-04-17 | 2020-04-28 | 中国矿业大学 | Large-dip-angle branched coal seam fully-mechanized caving-to-fully-mechanized mining continuous propelling mining method |
| CN113605919B (en) * | 2021-08-17 | 2023-09-08 | 山西晋煤集团技术研究院有限责任公司 | Method for setting upper layered working face roadway as lower layered working face multiplexing |
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