望云煤矿顶板安全控制及跨高比的优化研究

Study on Roof Safety Control and Span-depth Ratio Optimization in Wangyun Coal Mine

针对望云煤矿顶板稳定性差、抗变形能力弱的缺陷,对比分析不同跨高比的井下巷道方案,得到对井下巷道断面的结构优化结果。应用表明:综采面,设置巷道高度为3.7m,跨高比取0.81,顶板的状态最稳定,井下综采作业的安全性大大提高。

In view of the defects of poor roof stability and deformation resistance in Wangyun coal mine,the paper analyzes the underground roadway schemes with different span height ratio,and obtains the structural optimization results of the underground roadway section.The application shows that the roadway height is 3.7m,the span height ratio is 0.81,the state of roof is the most stable,and the safety of underground fully mechanized mining operation is greatly improved.