关键词: 深井高应力, 巷道围岩, 强力支护, 分次控制

Abstract: In order to solve serious deformation and failure problem of high stress roadway in deep coal mine, combining with powerful support theory and the relationship between time-dependent deformation and support time of surrounding rock, the powerful and multi support mechanical mechanism of roadway in deep coal mine was analyzed. And the powerful and multi support technology of the primary bolting and guniting support coordinating with the second fullface anchoring + grouting and floor birdcage anchors support was provided. Then the deformation of roadway surrounding rock was controllable in field application. The results show that: the deformation velocity of surrounding rock reduces first, and then changes slowed down, and suddenly increases finally, the second optimum support time is at the slowed down period of the deformation velocity for surrounding rock.