乌东德水电站地下洞室群创新施工方法与技术  

Innovative Construction Method and Technology for Underground Caverns of Wudongde Hydropower Station

作　　者：杨宗立[1] 丁鹏 安瑞楠 简崇林[1] 彭波 Yang Zongli;Ding Peng;An Ruinan;Jian Chonglin;Peng Bo(China Three Gorges Corporation,Wuhan 430010,P.R.China;China Construction First Bureau Group South China Construction Co.,Ltd.,Shenzhen,Guangdong 518000,P.R.China;Department of Hydraulic Engineering,Tsinghua University,Beijing 100084;Rocket Force Academy,Beijing 100011,P.R.China)

机构地区：[1]中国长江三峡集团公司,武汉430010 [2]中建一局集团华南建设有限公司,广东深圳518000 [3]清华大学水利水电工程系,北京100084 [4]火箭军研究院,北京100011

出　　处：《地下空间与工程学报》2024年第6期2045-2053,2082,共10页Chinese Journal of Underground Space and Engineering

基　　金：中国三峡集团科研项目(WDD/0578,WDD/0490);中国水利水电第十一工程局有限公司资助项目(SHC-JNHPP-JSFW-01-18012022,SH-KHL-SUB-2021003)。

摘　　要：大型水电工程中巨型地下洞室群的开挖、支护施工是技术难点,根据现场实际地质条件和工作环境对地下厂房的开挖及支护工法进行改进、对施工机械进行改良,是保证地下洞室群安全、优质、高效、绿色施工的重要保障。本文针对乌东德水电站大型地下洞室群施工过程中关键工法和技术难题,开展创新研发和攻关,包括:大跨度高边墙开挖施工、超大断面调压室开挖施工、小直径溜渣井式竖井开挖、不良地质段超大断面洞室支护、拔管法接触灌浆施工、洞内压力钢管拼装、多孔深竖井混凝土滑模施工、大型出线竖井施工等。从工艺类型、精细开挖、支护和装备革新技术等方面进行关键创新施工方法和技术总结,研究成果可供同类工程建设参考。The excavation and support construction of giant underground caverns in large-scale hydropower projects is a key route and a concentrated area of technical difficulties in engineering construction.Improving the excavation and support methods and construction machinery of underground power plants based on the actual geological conditions and working environment on site is an important guarantee for ensuring the safety,quality,efficiency,and green construction of underground caverns.This paper carried out innovative research,development and tackling of key construction methods and technical problems in the construction process of large underground caverns of Wudongde Hydropower Station,which included the excavation and construction of large-span high sidewall,excavation and construction of super large section surge chamber,excavation of small diameter slag chute shaft,support of super large section caverns in unfavorable geological sections,pipe pulling contact grouting construction,penstock assembly in the tunnel,concrete slip form construction of porous deep shaft and large outlet shaft construction,etc.Common key innovative construction methods and technologies from aspects such as process type,fine excavation,support,and equipment innovation technology were summarized.The research results could provide the reference for similar engineering construction.

关 键 词：乌东德水电站 地下洞室群 施工方法 开挖与支护 超大断面 

分 类 号：TV52[水利工程—水利水电工程]