滑石沟路坝工程土坝渗流分析

滑石沟路坝工程是一座均质碾压坝，主要功能是拦蓄洪水和高速公路交通运输．大坝坝体、坝基渗流稳定是大坝安全评价的一项基本内容，关系到工程自身稳定和下游人民的生命和财产安全．首先根据坝体和坝基的土料性质初步判断渗透变形类型，然后用不同方法计算了临界水力坡度和允许水力坡降．设计了无防渗措施与斜墙加水平铺盖防渗措施2种情况下，5种不同蓄水位共计10种运行工况，对坝体和坝基进行渗流分析．计算结果表明，坝体内各点的实际渗透坡降小于坝体和坝基材料的容许水力坡降最小值，因此坝体和坝基不会发生’渗流破坏．

Analysis of earth dam seepage in Huashigou road-dam project

Huashigou road-dam project is a homogeneous roller compacted concrete dam, the main features are storing floods and highway traffic. Dam and dam foundation seepage stability analysis are basic contents of dam safety evaluation, which relates to project their own stability and safety of human lives and properties. Firstly, judging seepage deformation types according to material properties of dam and dam foundation, and then, critical hydraulic gradient and allowing hydraulic gradient have been calculated by different methods. No seepage measures is designed and inclined and horizontal bedding anti-seepage measures are adopted, 5 different water levels under total of 10 different operating conditions of the dam and dam foundation seepage are analyzed. The results show that the actual penetration of the points inside the dam and dam slope is less than allowing hydraulic gradient value minimum value of the materials, so dam and dam foundation seepage failure does not occur.