七家营水库黏土心墙砂砾石坝渗流及坝坡稳定分析评价

Analysis and Evaluation on Seepage and Slope Stability of Clay Core Sand Gravel Dam of Qijiaying Reservoir

土石坝因具有就地取材、地质条件适应性强、工作可靠等优点而被广泛采用,其失事以渗流引起的渗透破坏、滑坡尤为严重。故合理、正确地进行大坝渗流分析与坝坡稳定分析是保证土石坝安全运行的关键。对七家营水库黏土心墙砂砾石坝渗漏量、浸润线、渗透坡降及坝坡抗滑稳定安全系数进行了复核计算,对大坝渗流及坝坡稳定进行了分析评价。

Earth rockfill dam is widely used for its advantages of local materials, strong adaptability to geological conditions and high reliability. Dam failure is mainly leakage damage and landslide caused by seepage. Therefore, reasonable and correct seepage and slope stability analysis is the key to ensure safe operation of the earth rockfill dam. This text makes a recheck calculation of the leakage, phreatic line, gradient and safety factor of stability against sliding of clay core sand gravel dam of Qijiaying reservoir, and analyzes the dam seepage and slope stability.