薄煤综采工作面过断层跨层位开采浅析

Analysis on the cross layer mining of over fault in fully mechanized coal mining face

新屯矿-448m以下2#煤具有突出危险性,为开采-448m以下煤,新屯矿采用开采保护层区域防突措施,即开采4#野青煤层消除2#煤突出危险性。14471野青工作面是新屯矿-600水平第一个开采保护层工作面,此面推进过程中揭露大量地质构造,其中f3断层H=4.3m对工作面推进造成较大影响。为了加快工作面推进度,根据工作面条件,提出了过断层跨层位开采方案,沿着断层下盘煤层走向开采断层上盘的页岩,一是避免工作面溜子过段层出现低弯,减少了工作面溜子事故,减少了机电设备维护、检修的费用:二是采煤机直接采页岩,减少人工打眼、放炮处理断层的工作量,加快了工作面推进度。

Under the new tuen ore - 448m 2 # coal outburst danger, for coal mining under - 448 m2 # seam, new tuen ore mining proteetive layer using regional outburst prevention measures, namely the elimination of 2 # 4 #coal seam layer mining coal outburst danger. 14471 wild given mining is the new tuen ore - 600 level the first protective layer mining working face, revealed a large number of geological structure, tile surface of the process of f3 fault H = 4.3 m large effects on the working face advancing. In order to speed up the working face impelling speed, according to the working eonditions, puts forward a fault across the horizon, the mining method along the fault footwall to the mining of coal seam faults on the plate of shale, one is to avoid working face appeared low bend over layer of the valve, reduce the accident of the valve face, reduce the cost of the me- chanical and electrical equipment maintenance, overhaul, 2 it is direct shale, coal winning machine to reduce artificial drilling and blasting processing fault workload, speed up the working face impelling speed.