Abstract: The roller compacted concrete gravity damat Silin hydro power station is of 117 mhigh. The key technological problem is the seepage path at the dam body and foundation. Two- dimensional finite element model was applied to analyse the seepage of dam and dam foundation. In calculation, it assumed that the interlayer seepage was anisotropic. According to construction method of roller compacted concrete gravity dam, three calculation schemes were adopted to research on the characteristic of seepage and other influencing factors. By seepage analysis, conclusion was gotten that the seepage characteristic of roller compacted concrete damwere determined by the seepage characteristics of layer, upstreamanti- seepage faceplate panel and seepage proof curtain.

摘要： 思林水电站大坝是一坝高117 m 的碾压混凝土重力坝, 其坝身及地基渗径是筑坝中的关键技术问题。本文应用平面有限元方法对坝体及坝基稳定渗流进行了计算分析,计算中碾压混凝土坝层面渗流按各向异性考虑。针对碾压混凝土坝的筑坝方式, 选用三种方案进行渗流分析计算, 研究碾压混凝土坝渗透特性及其影响因素。经渗流分析计算, 得出碾压混凝土坝渗透特性主要取决于层面、上游防渗面板、防渗帷幕的渗透性。