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High seam cutting coal mining face one-way process

Coal, the first roller along the top before cutting coal 2.5m, after the roller cutting coal 0.5 ~ 0.6m, before returning cylinders cut 0.5 ~ 0.6m, after the roller along the bottom cut of 0.6 ~ 0. 8m. 2.3 Single-, two-way comparison by comparing coal cutting technology, one-way way better than cutting coal cutting coal, as follows: 1) Cycle time: The single bi-directional cutting coal for each of the regular cycle time test, both process cycle same time period,[link widoczny dla zalogowanych], coal per knife is 45 ~ 55min (two-way cutting coal to remove a large lump of time). Unidirectional Cutting Tool cut the top rate of coal when the average 7m/min, cutting coal bed knife when the average speed 16m/min; and two-way average speed of cutting coal 5m/min. 2) large impact: the original two-way cutting coal technology, the big lump of frequent, the average class size affects more than 1h, the equivalent of a cut in half the time of coal, and coal cutting by one-way process, the basic elimination of the large the impact of coal. 3) coal, crusher impact: two-way process cutting coal, the coal machine, crushing machine by the large impact, often causing sudden crushing machine stuck, damaged. The surface before cutting coal in the use of one-way, three had replaced coal, crusher; since the cutting of coal by one-way process, and then was no coal, crusher damage. 4) conveyor impact: two-way cutting coal, tail side of the big lump in the coal after the impact of regular scraper, the scraper conveyor and the chain of life of greater impact. After cutting a large lump of coal one-way little impact on the small chain, conveyor runs,[link widoczny dla zalogowanych], the top chain tail shocks rare mutation rate of vibration phenomenon. 5) Ministry of coal machine cephalic Citation Impact: 12608 Surface coal from the coal used to use one-way cut before the emergence of the haulage machine cephalic 5-axis 44.2005. No2 caving management idler bearing, bearing cup breakdowns (the Ministry of damage to the tail side of the lead time), analyze its causes and by the tail side of the uneven flow of coal and coal-related impacts; cutting coal by one-way process, the cephalic traction machine replaced the block, in the future use of the process is not abnormal. 6) The Ministry of Coal Cutting Machine Moving the Department of impact: One-way cut coal, the coal is two-way average speed of walking when cutting coal twice, but the traction load was significantly reduced; on the load for the two travel unit little impact, mainly on the conveyor flatness requirements increased. Because coal faster, cutting the top roller load, while the other roller Shouli Bu even after long-term way of cutting coal cutting part of a larger, therefore, the two production classes and the nose and tail,[link widoczny dla zalogowanych], respectively, feed so that as much as possible about the Department of traction cutting classes in a circle within a uniform force. 7) the impact on the quality of the project: As a one-way only the driver who cut coal operation of coal, roof and floor can be well controlled, and improve project quality benefit. Cool

the impact of coal cable: Comparison between two processes, one-way cutting coal, due to fewer large, turn the cable from the slot a significant reduction in coal tank, folder protection of cables play a positive role But the coal fast exhumation of the cable is also frequent, increasing the difficulty of managing the cable pipe, which is one-way cable cutting coal on existing coal greatest risk. Now soft chute connected with a hose connection on the cable play a very good protection, pull the cable has not yet appeared linked to the accident. 9) the impact of the emulsion: the chute between the stent and the associated use of the reverse cylinder, one-way cutting coal cut Lycra top coal not only push the slide, when the cut end of coal not only push the slide mount frames,[link widoczny dla zalogowanych], each knife cutting coal will be Sheng emulsion caused no less than emulsion tank and massive overflow, increasing the difficulty of management. Through a single, two-way process more cutting coal, one-way for 12,608 coal cutting process is more mechanized mining face of the production conditions, to the current one-way yet to emerge due to accidents caused by cutting coal technology, our team also fully recognize that one way of cutting coal process the negative impact of equipment, from the cable management and many other aspects of prevention, enhancing efforts to check the maintenance, strictly from a fine grasp of production safety. 312,608 working face major technical and economic indexes 12608 working face length 239.6m, promote the length of 5889.12m, miner deep 0.865m, cycle output 1224t, daily output of 28764t, monthly 862920t, has an annual million tons. Face the recovery ratio of 93, extraction efficiency 639.2t / work. References: [1] to keep good,[link widoczny dla zalogowanych], I De Jing. Thick Seam Mining high yield practical technology [M]. Beijing: Coal Industry Press, 2001. [23 Gengzhao Rui, Zhao Kangyuan. Contemporary American Coal Industry [M]. Beijing: Coal Industry Press, 1997. I-3] China Coal Association. Naming the coal industry in 2002 on the high efficient mine (open air) of the decision [N]. China Coal Report, 2003 -5-27.
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