人民黄河2025，Vol.47Issue(5)：134-141,8.DOI:10.3969/j.issn.1000-1379.2025.05.022
基于监测和探测资料的某堆石坝及坝基渗流场数值反演分析
Numerical Inverse Analysis of Seepage Field in a Rockfill Dam and Its Foundation Based on the Monitor and Prospecting Data
摘要
Abstract
Aiming at the leakage issue of a reservoir rockfill dam and its foundation and based on the monitoring data and geophysical pros-pecting results,a numerical analysis model considering the defects of the dam seepage-control system was established and the inversion analy-sis on the seepage field of the dam and its foundation was carried out.The influence of the defects of the seepage-control system on the seep-age field was studied.The main causes of dam leakage were discussed,and the seepage safety of the dam and foundation overburden was as-sessed.The results show that the inversion analysis is in good agreement with the monitoring and detection results.70.6%of the total leakage discharge comes from the leakage of dam-shoulder curtain on the right bank and the bypassing of the rock mass,14.1%from the impermeable wall and 13.1%from the seepage around the bottom of the anti-seepage wall.The leakage caused by the defects of the left-bank curtain and geomembrane on the upstream dam surface is small.Due to the terrain of the right bank is higher than that of the left bank and the serious leakage from rock mass of the right dam-shoulder,the water head in the foundation of the right bank is significantly higher than that of the left bank,and there is a phenomenon that the seepage water flows from the right to the left.There are several abnormally high seepage pressure points behind the impermeable wall,indicating that there are defects at the connection between the anti-seepage wall or the geomembrane and the anti-seepage wall,which have become seepage channels.The hydraulic gradient in the foundation overburden only exceeds the allowable gradient of the soil at a few points,and has little impact on the whole seepage safety of the dam foundation.关键词
堆石坝/渗流场/数值模拟/反演分析/渗流稳定性Key words
rockfill dam/seepage field/numerical simulation/inversion analysis/seepage stability分类
建筑与水利引用本文复制引用
盖皓茜,陈群,杜辉,周小来..基于监测和探测资料的某堆石坝及坝基渗流场数值反演分析[J].人民黄河,2025,47(5):134-141,8.基金项目
国家自然科学基金面上项目(41977239) （41977239）
