出线竖井施工安全风险管理与控制措施

Safety Risk Management and Control Measures for Outgoing Shaft Construction

云南以礼河四级电站复建工程出线竖井采用直径5.8m的竖井掘进进行开挖施工,在国内尚属首次使用,存在不可预见的施工风险。总结了竖井掘进开挖支护方案和施工质量控制要点,分析了出线竖井施工过程中存在的风险源,从施工管理规章制度和施工专项安全技术方面提出了针对性的施工安全管理措施。

The outgoing shaft of Yilihe IV Hydropower Station Reconstruction Project is excavated with 5.8m diameter shaft excavation,which is first used in China and has an unforeseen construction risk.This paper summarizes the support scheme for shaft excavation and key points of construction quality control,analyses the risk sources existing in the construction process of outgoing shaft,and puts forward specific construction safety management measures from construction management rules and regulations and special construction safety technology.