南昌工程学院学报2025，Vol.44Issue(1)：8-13,6.
基于非线性最小二乘法的土石坝渗漏探测研究
Study on leakage detection of earth-rock dam based on nonlinear least square method
摘要
Abstract
In response to the uncertainty of reservoir dam leakage detection in sandstone area,a dam leakage detection meth-od based on quasi-Newton optimization nonlinear least square method is proposed.Firstly,the high-density electrical method(ERT)is used to detect the leakage of the reservoir dam in the sandstone area,and the quasi-Newton optimization nonlinear least square method(QNON)is introduced to interpret the ERT results.Then,the drilling method(BH)and water injection test(WJT)are used to compare and analyze the engineering geology.The results show that the ERT based on the quasi-New-ton nonlinear optimization least square method is sensitive to the leakage detection of the earth-rock dam,and five low-resist-ance abnormal areas are found in the earth-rock dam.The high-density electrical detection after QNON optimization has higher resolution and finer inversion results,which can more effectively delineate the leakage location of earth-rock dams.Through the verification of BH and WJT,the interpretation results of high-density electrical method are determined,and the leakage location and characteristics of reservoir dam are accurately determined.This method detects the leakage point well and points out the spatial distribution position of the anti-seepage curtain grouting of the reservoir dam,which can provide reference value for the anti-seepage project of the reservoir dam.关键词
高密度电法/准牛顿最优化/最小二乘法/土石坝/渗漏探测Key words
high density electrical method/quasi-Newtonian optimization/least square method/earth-rock dam/leakage de-tection分类
地质学引用本文复制引用
辛焱雯,甘建军,司智航,刘凯军,田涛,刘清,黄红儒..基于非线性最小二乘法的土石坝渗漏探测研究[J].南昌工程学院学报,2025,44(1):8-13,6.基金项目
国家自然科学基金项目(42162025) （42162025）
中国中铁股份有限公司课题(2021-重大-08) （2021-重大-08）
中铁水利水电规划设计集团有限公司项目(地勘-2020ww-0019) （地勘-2020ww-0019）
2024年度江西省自然资源厅科技创新项目(ZRKJ20242413) （ZRKJ20242413）
