基于非饱和非稳定渗流场的滑坡稳定性分析  

Stability Analysis of Unstable Permeability Field and Unsaturated Soil of Landslide

作　　者：郑明新[1] 张卢明[1,2] 方焘[1] 刘伟宏[1] 孔祥营[1] 

机构地区：[1]华东交通大学土木建筑学院,江西南昌330013 [2]核工业西南勘察设计研究院有限公司,四川成都61006

出　　处：《华东交通大学学报》2011年第3期44-48,共5页Journal of East China Jiaotong University

基　　金：国家自然科学基金项目(50668002;51068006);江西省科技支撑项目(2009BSB08701)

摘　　要：以鹰厦铁路K290滑坡为原型,基于降雨入渗情况下滑坡体呈饱和-非饱和渗流状态下,通过计算得到坡体孔隙水压力和体积含水量随降雨及地下水位变化的基本规律,进一步导入SIGMA/W程序并依据坡体孔隙水压力和体积含水量及地下水位变化特征分析了滑坡应力场,探讨了降雨强度、降雨持时和水位变化对滑坡体稳定性的影响。Based on the unsaturated and saturated slip soil with rainfall infiltration,the shear strength of unsaturated slip soil of K290 landslide along the Yingxia railway is analyzed.Then,the basic regularities of pore water stress,volume water content and ground water table are calculated.Furthermore,considering the various water tables,the influence on the parameters of shear strength and the contribution of suction,using SIGMA/W software,the stress field of landslide with the various rain intensity,raining time and the table of water are discussed,which lays a better guide for the analysis on the stability of unsaturated slope.

关 键 词：滑坡 非饱和滑带土 非非稳定渗流场 应力场 稳定性分析 

分 类 号：TU472[建筑科学—结构工程]