松散地层浅埋水工隧洞现场监测试验研究

摘要

Settlement monitoring and measuring of the ground settlement, crown settlement, convergence, surrounding rock pressure and internal force in the lining were performed at a shallow-buried hydraulic tunnel in loose ground based on the practices used for the South-North Water Diversion Project. Analysis of the ground deformation characteristics of the tunnel was carried out, and the deformation law and coverage of the excavation are presented.%在北京市南水北调配套工程南干渠工程试验段工程实践中,对松散土层浅埋水工隧洞施工中地层沉降进行了现场监控量测.文章基于监测结果,分析了该隧洞地层的变形特点,指出了松散土层中浅埋暗挖隧洞地层的变形规律,以及开挖影响的时空范围.研究分析的方法和结论可为类似条件下隧洞工程的设计、施工、监测和进一步的理论研究提供参考和借鉴.