引红济石调水工程试验支洞现场安全监测反演分析与优化设计

Inversion Analyses and Optimization Design for Field Safety Monitoring in Testing Tunnel Section of Honghe-to-Shitouhe Water Trausfer Project

以引红济石调水工程试验支洞0+241.0段洞周收敛变形监测数据为依据,首先对监测数据进行分析,给出围岩稳定性评价方法;然后根据现场监测数据对试验支洞典型断面附近洞段围岩进行跟踪施工过程的有限元二维数值仿真反演分析,利用仿真反演分析的岩体参数对开挖后的围岩的稳定性、现有支护结构的安全性进行评价,并对已有的支护方案进行优化设计。

Based on the monitoring for the convergence deformation in the testing tunnel section 0＋241.0 of Honghe-to-Shitouhe Water Transfer Project,the analyses for the monitored data are made so as to give the appraising mehtod of surrounding rock stability.Then,based on the monitored data in field,the 2D finite element numerical emulation inversion analyses are made for the surrounding rocks near the typical section of the testing tunnel,and by using the rock parameters from the numerical emutation inversion analyses,the surrounding rock stability after excavation and the safety of existent supporting structures are appraised,simultaneously,the optimization design is made for available supporting scheme.