六佳港隧道塌方成灾机理分析及数值反演计算

摘要

Through analysis of field monitoring data , this paper summarizes the surrounding rock deformation characteristics and initial support stress state in the process of landslide formation; then do numerical simulation on several typical sections and landslide segment respectively by using FLAC3D; combine with the calculation results and field monitoring data , it identifies the key factors and formation mechanism of landslides .%通过分析现场监测数据，总结塌方形成过程中隧道围岩的变形特征及初期支护的受力状态；采用FLAC3 D软件分别对几个典型断面和塌方段进行数值模拟计算；结合计算结果和现场监测数据，确定了本次塌方事故的关键成灾因素和形成机理。