摘要
地下洞室围岩（特别是塑性围岩）的稳定性状态，在很大程度上受围岩应力状态决定。以前的地下洞室围岩稳定性分析，一般仅考虑在自重作用下的稳定性状态，而忽略了地应力对围岩稳定性的影响，所得结论往往偏于保守。作者运用矢量分析和力学分析相结合的方法，提出一种考虑地应力的洞室围岩稳定性分析方法，并用实例进行了检验。结果表明，此方法简单易行。
The stability of surrounding rock of underground cavity is mainly controlled by the volume and weight of instable rock blocks and stress state of surrounding rock. Stability state is considered only relating to selfweight in current stability analysis of underground cavity, while the applied load is neglected, so its conclusion is over safe in general. In this paper, a new stability analytic method which can consider geostress of surrounding rock is presented according to vector algebra and mechanical analysis, and the checked results by some actual examples show that this method is very simple and easy to use, and it should be spread and applied.
出处
《地质灾害与环境保护》
1996年第4期1-6,共6页
Journal of Geological Hazards and Environment Preservation
基金
国家杰出青年科学基金
关键词
地下洞室
稳定性分析
围岩应力
地应力
围岩块体
Underground cavity Stability analysis Stress of surrounding rock Vector algebra Mechanical analysis
