瓮安县北斗山磷矿三号坑围岩应力分析及支护经验

Stress Analysis and Support Experiences on the Wall Rock in Beidoushan Phosphorite Pit No.3,Weng'an County,Guizhou

通过对巷道中开挖岩体前后的应力关系及岩体开挖的破坏模式分析,充分证实了支护与围岩相互作用关系的重要性,鉴于这种相互作用关系,简述一些在采场地压变化及顶板管理中所采取的一些措施及经验。

With analyses of stress correlation during terrene excavation and damaged pattern for the terrene excavation, it completely confirms the signi＇ficance of interaction between support and wall rock, some measures and experiences to ground pressure change and roof plate management of pit are generalized in views of the interacted relation.