综采工作面跨石门开采在土城矿的应用

Application of Fully Mechanized Coal Mining Face Crossing over Rock Crosscut in Tucheng Mine

为了提高煤炭采出率且实现对石门集中应力的释放,针对土城矿1512-18采面煤层赋存地质条件,分析了常规的走向长壁采煤法煤柱留设大,采出率低的原因。因此,提出了综采工作面跨石门开采方法,通过对跨石门开采技术巷道布置、支护方式、回采工艺以及开采效果的分析,说明近距离倾斜突出煤层采用走向长壁后退式采煤方法跨石门开采不但技术、安全上可行,而且还能获得较好的经济效益。

In order to improve the coal mining rate and to realize the concentrated stress in the rock crosscut released,according to the seam geological conditions of No.1512-18 coal mining face in Tucheng Mine,the paper analyzed the causes of large coal pillar left and low mining recovery rate of the conventional strike longwall mining.Thus the paper provided the mining method of the fully mechanized coal mining face crossing over rock crosscut analysis.With the on the gateway layout,support method,mining technology...