西马煤矿充填开采覆岩裂采比现场实测分析

Field measurement and analysis of overburden split mining ratio in Xima Mine

为分析西马煤矿1327工作面似膏体充填开采后的裂采比,采用现场实测的方法进行研究。在充分调研和掌握1327工作面的充填开采背景、充填开采工艺的基础上,通过现场实测和理论计算得到充填开采后的实际采厚,即等价采高为0.541 m。选择钻孔成像窥测的方法实测导水裂隙带高度,并根据现场施工情况设计监测方案,通过6个测点的导水裂隙带监测结果,绘制出覆岩破坏范围,最终得到工作面充填开采后的导水裂隙带高度为13.2 m,西马煤矿1327工作面似膏体充填开采后的裂采比为24.4。

In order to analyze the split mining ratio of 1327 working face in Xima Mine after paste like filling mining, the method of field measurement was adopted in this paper. On the basis of fully investigating and mastering the filling mining background and filling mining technology of 1327 working face, the actual mining thickness after filling mining was obtained through field measurement and theoretical calculation, that was, the equivalent mining height was 0.541 m.The method of borehole imaging and peeping was used to measure the height of the water diversion fracture zone, and the monitoring scheme according to the site construction situation was designed. Through the monitoring results of the water diversion fracture zone at six measuring points, the overburden damage range was got, and finally the height of the water diversion fracture zone after the face filling mining was 13.2 m. According to the concept of split mining ratio, the split mining ratio after paste like filling mining in 1327 working face of Xima coal mine was 24.4.