茨哈峡水电站垫层料与过渡料联合抗渗试验研究  

Combinated seepage failure tests on cushion and transition materials for Cihaxia Hydropower Station

作　　者：崔家全 马凌云 段军邦 张路 崔家铭 何静斌 常玉鹏 CUI Jiaquan;MA Lingyun;DUAN Junbang;ZHANG Lu;CUI Jiaming;HE Jingbin;CHANG Yupeng(Northwest Engineering Corporation Limited Engineering Experiment and Monitoring Institute,Xi'an 710000,China;Qinghai Yellow River Upstream Hydropower Development Corporation Limited Engineering Construction Branch,Xining 810003,China)

机构地区：[1]中国电建集团西北勘测设计研究院有限公司工程实验监测院,陕西西安710000 [2]青海黄河上游水电开发有限责任公司工程建设分公司,青海西宁810003

出　　处：《岩土工程学报》2024年第1期216-222,共7页Chinese Journal of Geotechnical Engineering

摘　　要：对于天然砂砾石料作为筑坝料的超高混凝土面板堆石坝工程,其坝体各分区料联合抗渗稳定性对坝体安全性十分重要。研究采用自主研制的高水头大型渗透试验设备,对茨哈峡水电站原级配砂砾石填筑料的垫层料与过渡料进行联合抗渗试验;监测各分区填筑料的渗流特性演变过程,总结了垫层料与过渡料筑坝料联合抗渗试验的演变基本规律,验证过渡料对垫层料的反滤保护作用,为茨哈峡水电站坝体填筑料的级配设计优化、渗透稳定安全性的论证提供了数据参考。For the ultra-high concrete face rockfill dams,natural sand and gravel materials are used as the dam materials for rockfill dam projects.The combined impermeability stability of the dam partition materials is very important to the dam safety.In this study,the self-developed high-head large-scale permeability test equipments are used to conduct the combined seepage failure tests on the sand and gravel dam materials for Cihaxia Hydropower Station.The evolution process of seepage characteristics of the filling materials in each district are monitored.The anti-filtering protection effects of the transition materials on the cushion materials are verified.The results may provide data reference for the optimization of gradation design of dam filling materials of Cihaxia Hydropower Station and the demonstration of seepage stability safety.

关 键 词：垫层料 过渡料 渗透变形 原级配试样 联合抗渗试验 

分 类 号：TU43[建筑科学—岩土工程]