糯扎渡水电站右岸泄洪洞出口段高流速区混凝土施工技术  

Concrete Construction Technology in High Velocity Zone of Outlet Section of Flood Discharging Tunnel on Right Bank of Nuozhadu Hydropower Station

作　　者：罗义刚 余文 郭伟 LUO Yigang;YU Wen;GUO Wei(China Anneng Group First Engineering Bureau Co.,Ltd.,Nanning,Guangxi,530000)

机构地区：[1]中国安能集团第一工程局有限公司,广西南宁530000

出　　处：《红水河》2021年第3期8-10,14,共4页Hongshui River

摘　　要：糯扎渡水电站泄洪洞是高流速、大流量的水工隧洞,出口明渠和挑流鼻坎的流速高达41 m/s,流量为3257 m^(3)/s,混凝土表面采用抗冲耐磨混凝土,混凝土质量要求高;通过合理分层分块、优化模板技术、改进混凝土浇筑工艺、采取综合温控措施等,高标准完成混凝土施工,可为类似工程提供借鉴。The flood discharging tunnel of Nuozhadu Hydropower Station is a hydraulic tunnel with high flow velocity and large flow.The flow velocity of the outlet open channel and deflecting bucket reaches 41 m/s and the flow rate is 3257 m^(3)/s.The concrete surface is made of abrasion resistant concrete,which requires high quality of concrete.Through reasonable layering and blocking,optimization of formwork technology,improvement of concrete pouring process and comprehensive temperature control measures,the concrete construction can be completed with high standard,which can provide reference for similar projects.

关 键 词：泄洪洞 出口明渠 挑流鼻坎 混凝土施工 糯扎渡水电站 

分 类 号：TV651[水利工程—水利水电工程] TV544.91