采场围岩压力分布规律现场试验研究

Field Test Study on Pressure Distribution Law of Surrounding Rock in Mining Zone

通过对马兰矿10608运输巷道深部位移的矿压观测,得出工作面在回采期间,巷道支撑力的变化阶段与区域。第一阶段为距离工作面72 m以外的无采动影响阶段,第二阶段为距离工作面27～72 m的采动影响阶段,第三阶段为距离工作面30 m以内的采动影响剧烈阶段。该结果为回采工作面留设停采线、加强支护和指导生产提供了依据。

The changing stage and area of the support force of the roadway during the mining period are obtained through the observation and measurement of the strata pressure displacement in the deep of the 10608 transport roadway in Malan Mine. The first stage is the non-mining impact phase away from the working surface of 72 m away, the second stage is the mining impact phase from the working surface 27~72 m, and the third stage is the striking stage of mining impact within 30 m from the working face. The definition of three stages provides basis for the set of the stop mining line, the strengthening of support and the production.