中厚煤层综采工作面回采巷道支护方案优化研究应用

Optimization Research and Application of Supporting Schemes for Mining Roadways in Fully Mechanized Mining Faces in Medium-thick Coal Seams

为保障8128工作面进风巷围岩的稳定,根据巷道原有支护方案下围岩变形情况,通过地应力测试和钻孔窥视结果,得出巷道围岩最大主应力为水平方向,顶板5.6~8 m岩层可作为持力层,采用数值模拟进行支护优选设计,并对支护效果进行监测。监测结果表明:巷道在优化支护下,顶底板和两帮移近量分别为296 mm和281 mm,保障了围岩的稳定。

In order to ensure the stability of the surrounding rock of the air intake roadway in the 8128 working face,according to the deformation of the surrounding rock under the original support plan of the roadway,through the results of in-situ stress test and drilling peep,it is concluded that the maximum principal stress of the surrounding rock of the roadway is in the horizontal direction,and the roof is 5.6~8m rock layer can be used as a supporting layer,numerical simulation is used to optimize the design of the support,and to monitor the support effect.The results show that under the optimized support of the roadway,the moving distances of the roof and bottom plates and the two sides are 296mm and 281mm,respectively,which ensures the stability of the surrounding rock.