充填开采工作面前后方影响范围分析

Analysis on influence scope in the front and rear of filling mining working face

为深入研究充填工作面前后方影响范围,以西马煤矿充填首采工作面为例,采用理论分析、物理模拟和现场实测相结合的方法进行分析。通过理论分析得出充填工作面上覆岩层的影响范围大大降低,根据传递岩梁假说得出工作面前后方的影响范围也必将减小。物理模拟和现场实测结果显示,工作面前方的影响范围大约是18m,工作面后方的影响范围大约是22~24m。对比垮落法开采影响范围的统计数据,充填开采工作面前方和后方的影响范围大幅减小,验证了理论分析的结论。

In order to further research the filling face influence scope, we use theoretical analysis, physical simulation combining with field measurement, to analyze it based on the first coalface face in Xima Coal Mine. According to the result of theoretical analysis, we find the scope of influence of overlying strata above the filling face get smaller. And according to the transfer rock and beam hypothesis, we get a conclusion that the influence scope will decrease. According to the result of physical simulation combine with field measurement, it shows that the influence scope in front of the working face is 18m, the influence scope behind the working face is about 22 - 24m. It＇ s influence scope is much smaller than caving mining, which proves the conclusion of theoretical analysis.