摘要
运用数值计算方法，分析了老顶在断裂前后及不同来压步距时对采场围岩的位移及应力状态的影响，为揭示采场顶板的稳定性提供了依据。
Using numerical method,influences of pre fracture and post fracture, and different weighting paces of main roof on displacement and stress state of surrounding rocks are analysed. Immediate roof failure pattern under main roof upper boundary is also studied.
出处
《太原理工大学学报》
CAS
1998年第2期125-128,共4页
Journal of Taiyuan University of Technology
基金
煤炭科学基金
关键词
老顶边界
矿压显现
直接顶
破坏模式
main roof boundary
roof behaviour
immediate roof
failure pattern
