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我矿自1978年试用国产综采设备以来,已回采了18个工作面,采煤429万吨。目前综采年产量已占全矿年产量的74%。由于开采煤层为侏罗系长焰煤,发火期一般1～3个月,最短仅20天左右。而且煤厚在3.4～6.9m,需要分层开采。如果综采只限于开采一分层,势必给矿井生产接替带来困堆,因此,综采如何开采极易自燃煤层下分层,已成为急待解决的问题。近两年,迫于接替紧张,我们已在矿井西翼的底面二盘区22032工作面进行了综采开采下分层试验。从整个试采过程看,生产是安全顺利的,产量是稳定的,而且首创我矿综采月产63274t 最高记录。
Since the trial of domestic fully mechanized mining equipment in 1978, I Mine has recovered 18 facets and collected 4.29 million tons of coal. At present, the annual output of fully mechanized coal mining has accounted for 74% of the total annual production. Due to the mining of coal seam Jurassic long-flame coal, the general period of 1 to 3 months, the shortest only about 20 days. And the coal thickness is 3.4 ~ 6.9m, need stratified mining. If fully mechanized coal mining is only limited to a stratified mining, it will inevitably bring about a pile of mines to be replaced by mine production. Therefore, it has become an urgent problem to solve the problem of how fully-mechanized mining can separate strata under highly spontaneous combustion coal seam. In the recent two years, due to the succession of tension, we have carried out the stratified mining experiment under face 22032 in the second panel of the west wing of the west wing of the mine. Throughout the trial mining process, the production is safe and smooth, the output is stable, and the first mine fully mechanized mining yield 63274t highest record.