摘要
降雨入渗严重影响河流两岸边坡的稳定性,主要是因为削弱了岩土体的抗剪切能力、改变了地下水位高度和坡体中的非饱和渗流的流态。静水压力的变化导致坡体呈现不稳定状态,分析这种状态的形成过程主要是分析饱和-非饱和流场的作用效果。本文在饱和-非饱和渗流理论的基础上,研究了降雨入渗破坏坡体稳定性的作用过程与机理,总结了滑坡降雨条件下的稳定性的变化特征。
Rainfall infiltration seriously affects the stability of slopes on both banks of the river,mainly because it weakens the shear resistance of rock and soil mass,changes the height of groundwater level and the flow pattern of unsaturated seepage in the slope.The change of hydrostatic pressure leads to the unstable state of the slope.The analysis of the formation process of this state is mainly to analyze the effect of saturated unsaturated flow field.Based on the saturated unsaturated seepage theory,this paper studies the action process and mechanism of rainfall infiltration destroying slope stability,and summarizes the variation characteristics of landslide stability under rainfall conditions.
作者
田辽西
赵玉苹
赵伟
Tian Liaoxi;Zhao Yuping;Zhao Wei(Hydrogeological Engineering Geological Survey Institute of Gansu Bureau of Geology and Mineral Exploration and Development,Zhangye 734000,China)
出处
《科学技术创新》
2022年第20期125-128,共4页
Scientific and Technological Innovation
关键词
降雨入渗
抗剪强度
饱和-非饱和流场
滑坡稳定性
Rainfall infiltration
Shear strength
Saturated unsaturated flow field
Landslide stability
