跨采影响下底板巷道围岩应力演化规律及支护对策研究

Research on Stress Evolution Process for Surrounding Rock and Support Strategy of Floor Roadway with Influence of Overhead Mining

针对鹤壁九矿东总回风巷受上方工作面跨采影响导致巷道变形严重的问题,采用数值模拟方法分析了上方工作面推进至不同距离时巷道围岩应力演化规律。基于此提出了针对性的支护对策并进行了工业性试验,矿压监测结果显示围岩控制效果较好。

According to the serious roadway deformation problem of east return airway resulting from the overhead mining above the working face in Hebi No.9 coal mine,analyzes the stress evolution law for surrounding rock of roadway with the different advance distance of mining workface by numerical simulation. Based on the above evolution law,proposes the pertinent tunnel support strategy and the industrial tests are carried out ,the monitoring results of rock pressure show that the proposed tunnel support strategy has good control effect of the deformation of the surrounding rock.