摘要
隧道围岩和开挖面的稳定性分析是工程保障安全施工的必要条件,为分析隧道开挖过程造成的扰动情况,在前人研究的基础上,基于屈服准则和应变软化模型,针对岩土材料的弹性-屈服-破坏三种状态,同时考虑剪切和拉伸状态的影响,建立了统一的全阶段单元状态量化评价指标。利用单元状态指标ZSI(Zone State Index)来表示和判别隧道岩体的安全状态、危险程度情况。
The stability analysis of tunnel surrounding rock and excavation surface is a necessary condition for engineering to ensure safe construction.In order to analyze the disturbance caused by the tunnel excavation process,on the basis of previous research,based on the yield criterion and strain softening model,the rock and soil are analyzed.The three states of elasticity-yield-failure of the material are considered,and the influence of shear and tensile states is considered,and a unified quantitative evaluation index of all-stage element state is established.The unit state index ZSI(Zone State Index)is used to represent and judge the safety state and danger degree of the tunnel rock mass.
作者
刘训训
LIU Xunxun(Linshu County Traffic Enforcement Brigade,Shandong Linyi 276700 China)
