岩土力学2025，Vol.46Issue(12)：3673-3682,10.DOI:10.16285/j.rsm.2024.1609
电解减饱和处理后砂土的非饱和状态稳定性研究
Stability of the unsaturated state of sand after electrolysis desaturation treatment
摘要
Abstract
Desaturation method is an innovative method to reduce the liquefaction risk of sandy grounds.The mechanism is to reduce soil saturation by introducing gas into soil pores,thereby increasing liquefaction resistance.This method provides a simple but economical solution to liquefaction of sandy soils.However,the long-term stability of the unsaturated state of the treated sand is a critical issue affecting the anti-liquefaction efficacy and economical efficiency of the desaturation method,and there are few related studies currently.In this study,an originally saturated sandy ground was desaturated by electrolytic desaturation method,and the change in saturation was investigated under different conditions,including hydrostatic and hydraulic gradient flow conditions.Additionally,the effects of hydraulic gradient,particle size distribution,relative density,and initial saturation degree on the saturation change of the specimens were analyzed.The results show that pore-water seepage gradually increases the saturation degree of the specimens until it stabilizes.A larger hydraulic gradient yields a higher final stable saturation degree.Under the same seepage conditions,smaller relative density and finer particle size lead to smaller final changes in saturation.In addition,decreasing the saturation of the specimen after electrolysis reduces the final stable saturation degree.关键词
减饱和法/砂土液化/饱和度/长期稳定性Key words
desaturation method/sand liquefaction/saturation degree/long-term stability分类
建筑与水利引用本文复制引用
YE Bin,JIANG Ji-ao,ZHU Jia-zhi,DING Yuan,LIN Chuang-ji..电解减饱和处理后砂土的非饱和状态稳定性研究[J].岩土力学,2025,46(12):3673-3682,10.基金项目
国家重点研发计划(No.2024YFF0507903) （No.2024YFF0507903）
国家自然科学基金(No.42372332). This work was supported by the National Key R&D Program of China(2024YFF0507903)and the National Natural Science Foundation of China(42372332). （No.42372332）
