摘要
黄土滑坡灾害发育机理的研究对于区域内防灾减灾具有重要的理论和现实意义。本文以泾阳庙店西村为例,在非饱和土特性试验基础上,建立典型斜坡的饱和—非饱和渗流模型,模拟了灌溉诱发地下水位上升对于斜坡渗流场的影响。计算结果显示,地下水位上升将引起斜坡内部孔隙水压力分布显著变化。综合边坡稳定性计算结果,边坡稳定性随着地下水位的上升逐渐减小,在地下水位上升至30 m时边坡处于极限平衡状态。
The research on the development mechanism of loess landslide disaster has important theoretical and practical significance for disaster prevention and reduction in the region. In this paper,based on the test of unsaturated soil characteristics,the saturated-unsaturated seepage flow model of typical slope is established,and the influence of irrigation-induced groundwater level rise on the seepage field is simulated. The results show that the rise of groundwater level will cause the pore water pressure distribution within the slope to change significantly. The slope stability decreases with the increase of the groundwater level,and the slope is in the equilibrium state when the groundwater level rises to 30 m.
出处
《地下水》
2017年第6期61-63,162,共4页
Ground water
基金
国家大学生创新创业训练计划项目(201510697001)
关键词
庙店西村
滑坡
地下水位
数值模拟
The west village of Miaodian
landslide
groundwater level
numerical simulation
