关角隧道斜井岩溶裂隙水处理技术探讨

Discussion on Treatment Technologies for Karstic Fissure Water in the Inclined Shafts of Guanjiao Tunnel

文章以西格二线关角隧道3#、4#斜井涌水处理为例,详细介绍了注浆堵水方案、注浆工艺、抽排水设备的配置;并根据灰岩岩溶裂隙水的涌水特征,总结、探讨了斜井施工中堵、排水措施的水量选择标准和注浆措施的选取标准,可为其它类似工程设计、施工提供工程借鉴与参考。

Located on Xining-Golmud section of Qinghai-Tibet railway line, so far Guanjiao tunnel is the longest railway tunnel in China with a length of 32.645 kin. The paper focuses on the No.3 and No.4 inclined shafts of Guanjiao tunnel, describes in detail the water blocking solution, grouting technology, pumping equipment allocation, and on the basis of the features of water gushing, summarizes and discusses the water inflow criteria for water blocking, water pumping and drainage, and different grouting scheme selection in the construction of inclined shaft. It aims to be taken for reference by other similar projects.