不良地质条件下特大断面水工隧洞口开挖支护施工措施探索  

Exploration on the Construction Measures for Excavation and Support of Super Large Section Hydraulic Tunnel Portal under Adverse Geological Conditions

作　　者：刘猛 LIU Meng(China Anneng Construction Group Co.,Ltd.,Beijing 100055)

机构地区：[1]中国安能建设集团有限公司,北京100055

出　　处：《四川水力发电》2024年第S02期71-73,99,共4页Sichuan Hydropower

摘　　要：在水电站施工过程中,水工隧洞口的开挖支护通常为施工管控的重点和难点。当遇到特大断面水工隧洞口设置于不良地质带时,其开挖支护施工的安全、质量、进度管控将具有更大的不确定性和隐患。以大渡河流域某水电站导流隧洞口开挖支护施工过程中采取的措施为例,阐述了对不良地质条件下特大断面水工隧洞口开挖支护施工措施进行的探索,以期为相似工程不良地质条件下特大断面水工隧洞口的开挖支护施工借鉴。In the construction process of hydropower projects,excavation and support of hydraulic tunnel openings are usually the focus and difficulty of construction control.When encountering situations where the super large section hydraulic tunnel openings are set in unfavorable geological zones,there will be greater uncertainty and hidden dangers in the safety,quality,and progress control of excavation and support construction.Based on the the measures taken during the excavation and support construction process of a diversion tunnel portal of a hydropower project in the Dadu River Basin,this paper expounds exploration on the construction measures for excavation and support of super large section hydraulic tunnel portal under adverse geological condition in order to provide reference for similar projects under unfavorable geological conditions.

关 键 词：不良地质条件 特大断面 水工隧洞 开挖支护 施工措施 

分 类 号：TV7[水利工程—水利水电工程] TV52TV51