考虑区间影响因素的地下洞室围岩位移分析  

Analysis on Displacement of Surrounding Rock in Tunnel with Consideration of Interval Influencing Factors

作　　者：黄明奎[1] 全健[1] 

机构地区：[1]重庆交通大学土木工程学院,重庆400074

出　　处：《重庆交通大学学报（自然科学版）》2016年第2期21-23,125,共4页Journal of Chongqing Jiaotong University(Natural Science)

基　　金：国家自然科学基金项目(51308574);重庆市教委基金项目(KJI20407)

摘　　要：针对影响围岩位移的参数的不确定特点,将传统围岩位移计算模型与区间分析方法相结合,建立了适用于区间分析的地下洞室围岩位移计算模型,利用该模型分析了IV级围岩条件下拱顶位移的区间分布特点。结果表明:该模型客观上更能反映围岩位移的实际变形性态,研究成果可为后续工程设计、施工以及支护时机的选择提供参考。Surrounding rock displacement was one of the important parameters to assess rock stability in tunnel and the uncertainty of these parameters was seldom considered in the conventional calculation of surrounding rock displacement. Because of the uncertainty of parameters that influence the surrounding rock displacement,a new displacement calculating model suitable for the interval analysis was built by combining the conventional displacement calculating model with the interval analysis method,and then the model was applied to analyze the interval distribution features of arch crown displacement of surrounding rock condition of rating IV. The analysis result shows that the model can objectively reflect the actual deformation behavior of rock due to displacement and the research results can be taken as the reference for determination on subsequent works design,execution and the time for supporting.

关 键 词：隧道工程 围岩 位移 区间分析 

分 类 号：U453[建筑科学—桥梁与隧道工程] O319.56[交通运输工程—道路与铁道工程]