刘柄材,江兴元,孟生勇,杨义

• 1:贵州大学资源与环境工程学院
• 2:贵州大学喀斯特地质资源与环境教育部重点实验室
• 3:贵州正业工程技术投资有限公司

摘要(Abstract)：

【目的】为了探究降雨与地下水联合入渗下斜坡内部水土变化特征和斜坡变形破坏机理。【方法】采用粉质黏土，设计了两种不同地下水入渗水头高度和降雨相组合的模型试验，对土体体积含水量和孔隙水压力进行监测，研究斜坡内部水土响应特征及失稳模式。【结果】结果显示：降雨与地下水联合入渗下，斜坡内部渗流场发生变化。地下水入渗水头较低时，坡底土体接受地下水和降雨入渗，坡脚和斜坡中上部土体接受降雨入渗；地下水入渗水头较高时，斜坡底部、坡脚和斜坡中部土体接受地下水入渗，斜坡上部土体接受降雨入渗。且湿润锋平行坡顶、坡面和坡底向斜坡内部发展。【结论】斜坡前部土体饱和时，斜坡以流滑为主。但地下水入渗水头较低时，流滑范围较小且达到失稳平衡所需时间较长。

关键词(KeyWords)： 降雨与地下水入渗;物理模型试验;渗流场;失稳模式

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目(42007271);; 贵州省科技支撑计划项目(黔科合支撑[2023]一般119)

作者(Author): 刘柄材,江兴元,孟生勇,杨义

DOI: 10.13928/j.cnki.wrahe.2025.03.016

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