摘要
滑坡加卸载响应比是一种基于非线性理论可用于滑坡失稳预测的一种全新方法,目前还缺乏地下水作为加卸载动力因子对滑坡作用机制的分析研究。本文以某典型降雨型滑坡作为实例,对地下水渗流、孔隙水压力、基质吸力、土体含水量等因子对滑坡变形失稳的作用规律和作用机制进行数值模拟分析,认为地下水位抬升产生的静水压力和渗流作用产生的水平向动水压力是滑坡主要地下水加卸载动力学因子,提出将静水压力、动水压力、基质吸力表达成总水头H,作为加卸载响应的动力学参数,为建立基于地下水作用的加卸载响应比模型提供思路和依据。
LURR （ Load Unload Response Ratio ） is a new method of landslide prediction which is based on nonlinear theory, but at current few studies have been done about groundwater as a load-unload dynamic factor affecting the landslide. A typical rainfall landslide has been studied in this paper, the deformation law and mechanism of landslide due to water seepage, pore pressure, suction and soil moisture effect are analyzed by using numerical analysis software. The study shows that hydrostatic pressure caused by groundwater rising and horizontal hydrodynamic pressure caused by seeping are the main groundwater load-unload dynamics factors of landslide. So the hydrostatic pressure and hydrodynamic pressure are expressed as the total suction head, which is considered as a dynamic parameter of load-unload response ratio, and it provides a good idea and evidence to load-unload response ratio model based on groundwater effect.
出处
《地下空间与工程学报》
CSCD
北大核心
2012年第3期645-651,共7页
Chinese Journal of Underground Space and Engineering
