覆盖层上混凝土面板堆石坝离心模型试验研究

Centrifuge model test for concrete face rockfill dam constructed on coverburden layer

以建于深覆盖层上的梅溪水库混凝土面板堆石坝最大断面为试验断面，采用离心模型试验研究了三种不同趾极长度方案下防渗墙和面板的应力变形特性，探讨了趾极长度对防渗墙和面板应力变形性状的影响，提出了最优趾板长度范围．通过研究，揭示了防渗墙和面板的应力变形规律，为覆盖层上混凝土面板堆石坝的设计提供了科学的依据．

Taking the maximum section of Meixi concrete face rockfiu dam which was con-structed on coverburden layer as test section,the stress-strain characteristics of concrete seepage prevention Well and facing were studied by means of centrifuge model tests. 3 models with differ-ent distance from dam neel to seepage prevention wall were put into testto recearch its influence upon the stress-strain behavior,and the range of optimal distance fro darn heel to seepage preven-tion wall was presewted- By the experimental research,the Stress-strain characteristics of seepage prevention wall and concrete facing were revealed. It will provide a Scientific basis for the design of concrete face rockfill dam built on coverburden layer.