【摘要】 客观存在的不确定性使得节理岩体工程不可避免地存在风险,概率分析是进行节理岩体工程风险分析评价的有效方法和手段。本文考虑节理岩体的随机特性,在关键块体理论中应用概率分析方法并结合具体工程对岩体地下洞室随机块体进行稳定性分析和预测,统计分析节理裂隙的产状特征,搜索并计算随机块体的安全性并反演得到所需的锚固力,采用随机方法分析评价系统锚杆和衬砌对关键块体的支护效果。研究方法及成果具有创新性,可为类似岩体工程的分析研究提供借鉴。更多还原

【Abstract】 Objective existence of uncertain factors cause inevitably risks in jointed rock engineering. The probabilistic theory is the effective method and means to analysis and evaluation risks of jointed rock mass engineering. Considering the random characteristics of jointed rock mass,the probability method is applied in key block theory. Stability analysis and forecasting was done for random blocks with a specific underground cavern rock engineering. Characteristics of joint sets,such as trends,dips,etc. were statistics. Then using the method put forward in the paper,the safety of random blocks was gained. Also,the anchoring force can be got by inverse calculating.Finally,the effect of the systematic bolt,also the supporting effective,were evaluated. Research methods and achievements has innovation,and can be used as a reference for the similar engineering of rock mass engineering.更多还原