变态混凝土对碾压混凝土坝防渗的影响研究  

Study on Influence of Abnormal Concrete on Seepage Prevention of Roller Compacted Concrete Dam

作　　者：田福文[1] 周利[2] TIAN Fuwen;ZHOU Li(Sinohydro Engineering Bureau 8 Co.,Ltd.,Changsha,Hunan,410004;State Key Laboratory of Water Resources and Hydropower Engineering,Wuhan University,Wuhan,Hubei,430072)

机构地区：[1]中国水利水电第八工程局有限公司,湖南长沙410004 [2]武汉大学水资源与水电工程科学国家重点实验室,湖北武汉430072

出　　处：《红水河》2021年第2期26-30,共5页Hongshui River

基　　金：中国电力建设股份有限公司科技项目(DJ-BZXM-2019-03)。

摘　　要：为探析变态混凝土对碾压混凝土坝防渗的影响,以某碾压混凝土坝为例,设定上游防渗区宽度,采用大型通用有限元软件ABAQUS模拟分析了变态混凝土不同宽度和渗透系数条件下的大坝渗透机理,并计算讨论了坝体单宽的渗流流量变化规律等。计算结果表明,变态混凝土宽度对坝体防渗影响不大,加浆工艺和加浆量对坝体防渗影响较大。变态混凝土施工宜采用垂直加浆工艺,并严格控制加浆量。In order to analyze the influence of abnormal concrete on the seepage prevention of roller compacted concrete dam,taking a roller compacted concrete dam as an example,the width of upstream seepage prevention zone is set,and the seepage mechanism of the dam with different width and permeability coefficient of abnormal concrete is simulated and analyzed by using the large-scale general finite element software ABAQUS,and the seepage flow variation law of the single width of the dam is calculated and discussed.The calculation results show that the width of abnormal concrete has little influence on the seepage prevention of the dam,but the grouting technology and grouting amount have great influence on the seepage prevention of the dam.Vertical grouting technology should be adopted in abnormal concrete construction,and the amount of grouting should be strictly controlled.

关 键 词：变态混凝土 碾压混凝土坝 宽度 施工工艺 防渗 

分 类 号：TV544.921[水利工程—水利水电工程]