土石坝加高培厚工程稳定非稳定渗流安全分析研究  

Study on Safety Analysis of Stable and Unstable Seepage of Earth Rock Dam Heightening and Thickening Project

作　　者：牛文龙 Niu Wenlong(Beijing Zhongshuike Engineering Group Co.,Ltd.,Beijing 100048,China)

机构地区：[1]北京中水科工程集团有限公司,北京100048

出　　处：《陕西水利》2022年第2期9-11,共3页Shaanxi Water Resources

摘　　要：本文以某病险水库为研究对象,开展了土石坝加高培厚工程渗流安全分析研究,分析了不同工况下的土石坝加高培厚工程渗流量、渗透坡降及浸润线等变化结果。结果表明:各工况下加固后坝体出逸段及坝基渗透坡降均小于允许渗透坡降,坝体和坝基均满足渗透稳定要求,大坝不会发生渗透破坏。加固后坝体浸润线和逸出点的位置正常,在合理安全范围内。现状主坝下游坡脚地面比原设计地面提高了6.653 m,原设计排水体已埋入地下,且未新设置下游排水设施,因此该水库可能存在着影响坝体渗流安全的隐患。This paper takes a dangerous reservoir as the research object, and carries out the study on the seepage safety analysis of the embankment dam heightening and thickening project. The results of the seepage flow, seepage gradient and infiltration line of the earth-rock dam heightening and thickening engineering under different working conditions are analyzed. The results show that the dam escape section and the seepage slope of the dam foundation are less than the allowable seepage slope after reinforcement under all working conditions, the dam body and the dam foundation meet the requirements of seepage stability, and the dam will not be damaged by seepage. After reinforcement, the positions of the dam body’s infiltration line and escape point are normal and within a reasonable and safe range. The bottom surface of the downstream slope of the main dam is currently 6.653 m higher than the original designed ground. The original designed drainage body has been buried in the ground and no downstream drainage facilities have been newly installed. Therefore, the reservoir may have hidden dangers that may affect the safety of the dam’s seepage.

关 键 词：土石坝 加高培厚 渗流 安全分析 

分 类 号：TV139.1[水利工程—水力学及河流动力学]