拉哇水电站泄洪和溢洪洞衬砌镜面混凝土施工技术  

Construction Technology for Mirror Concrete Lining of Flood Discharge and Spillway Tunnel of Lawa Hydropower Station

作　　者：余建国 衣志勇 杨红富 YU Jianguo;YI Zhiyong;YANG Hongfu(Sichuan Ertan International Engineering Consulting Co.,Ltd.,Chengdu Sichuan 611130)

机构地区：[1]四川二滩国际工程咨询有限责任公司,四川成都611130

出　　处：《四川水力发电》2024年第3期129-133,140,共6页Sichuan Hydropower

摘　　要：笔者以拉哇水电站泄洪、溢洪洞洞身边墙衬砌为研究对象,通过工艺性试验对比了不同模板材质、不同振捣参数及不同脱模剂条件下对镜面混凝土外观质量的影响,结果表明:使用单面抛光钢板或复合钢板为模板,以色拉油作为脱模剂,并按初振60 s、复振45 s、间隔20 min的振捣参数下能有效提升镜面混凝土的外观质量,优化振捣工艺,加强施工过程质量控制对镜面混凝土外观质量起到了关键性作用。In this paper,the wall lining around the flood discharge and spillway tunnel of Lawa Hydropower Station was taken as the research object.Through technological tests,the influence of different formwork materials,different vibration parameters and different release agents were compared on the appearance quality of mirrored concrete.The results show that:The appearance quality of mirror concrete can be effectively improved by using single-sided polished steel plate or composite steel plate as template,using salad oil as release agent,and using vibration parameters of 60 s for initial vibration,45 s for re-vibration,and 20 min interval.Optimizing vibration process and strengthening quality control during construction play a key role in the appearance quality of mirror concrete.

关 键 词：镜面混凝土 振捣参数 模板材质 

分 类 号：TV554.14[水利工程—水利水电工程]