高寒高海拔地区软岩长引水隧洞变形塌方处理技术——以西藏拉洛水利枢纽工程德罗引水隧洞为例  

Deformation and collapse treatment technology of long diversion tunnel in soft rock in high altitude and cold area: a case of Deluo diversion tunnel of Laluo Hydro Project in Tibet

作　　者：丹增 刘杉 冯云龙 达娃索朗 DAN Zeng;LIU Shan;FENG Yunlong;Dawasuolang(Administration of Laluo Water Control Project and Irrigation Area of Tibet Autonomous Region,Lasa 450000,China;Jiangsu Kexing Project Management Co.,Ltd.,Nanjing 210000,China)

机构地区：[1]西藏自治区拉洛水利枢纽及灌区管理局,西藏拉萨850000 [2]江苏科兴项目管理有限公司,江苏南京210000

出　　处：《水利水电快报》2022年第11期44-47,53,共5页Express Water Resources & Hydropower Information

摘　　要：为解决高寒高海拔地理环境和软岩地质条件下,西藏拉洛水利枢纽工程德罗引水隧洞变形与塌方事故频发且处理施工难度大、危险性高的问题,通过对传统变形及塌方处理技术进行优化及组合,采用“超前支护+刚性支护+柔性支护+有序排水”的方案,形成了一套完整的、适用于高寒高海拔地区深埋软岩长引水隧洞的变形与塌方处理施工技术。监测结果表明,该技术取得了良好的围岩处理效果。研究成果可为类似工程提供借鉴。In order to solve the problems of deformation, frequent collapse difficult and dangerous construction of the Deluo diversion tunnel of the Laluo Hydro Project in Tibet, through the optimization and combination of the traditional deformation and landslide treatment technologies and adopting the the scheme of “advanced+rigid+flexible support+orderly drainage”system, a complete set of deformation and collapse treatment technology for long diversion tunnel in deep soft rock at high altitude and cold area has been formed.The results showed that surrounding rock was well treated with this technology.The research results could provide references for similar Projects.

关 键 词：软岩长隧洞 围岩变形 塌方 处理技术 德罗引水隧洞 拉洛水利枢纽工程 西藏 

分 类 号：TV554[水利工程—水利水电工程]