大岗山水电站尾水隧洞顶拱混凝土配合比研究  

Study on the Concrete Mix Proportion for Crown of Tailrace Tunnel in Dagangshan HEP

作　　者：侯建军 刘莉萍 陆威[1] HOU Jianjun;LIU Liping;LU Wei(Sinohydro Bureau 7 Co.,Ltd,Chendu,Sichuan,611730)

机构地区：[1]中国水利水电第七工程局有限公司,四川成都611730

出　　处：《四川水力发电》2022年第4期68-70,75,共4页Sichuan Hydropower

摘　　要：针对大岗山水电站尾水隧洞顶拱混凝土表面频繁出现的水波纹现象进行了分析探讨,研究发现其主要原因是由于混凝土泌水。阐述了采用粉煤灰替代砂使混凝土泌水率稳定于3.94%的过程,解决了顶拱混凝土出现的水波纹问题,所提供的思路对于类似工程具有较好的指导意义和参考价值。In view of the frequent water ripple on the crown of the tailrace tunnel of Dagangshan HEP,it is mainly due to the bleeding of concrete after study.The paper proposes to use fly ash instead of sand,to maintain the bleeding rate of concrete stable at 3.94%,which solves the phenomenon of water ripple on the crown.The ideas provided in this paper has good guiding significance and reference value for similar projects.

关 键 词：水波纹 泌水 石粉 粉煤灰 大岗山水电站 混凝土配合比 

分 类 号：TV7[水利工程—水利水电工程] TV41TV43TV42TV554