云南鲁甸甘菜园滑坡稳定性评价  

Stability Analysis of Gancaiyuan Landslide in Ludian County, Yunnan Province

作　　者：丁鸿弼[1,2] 蔡玲玲[2] 李刚[2] 邓兵[2] 

机构地区：[1]吉林大学环境与资源学院,长春130012 [2]中国地质调查局水文地质环境地质调查中心,河北保定071051

出　　处：《城市地质》2015年第3期44-49,共6页Urban Geology

基　　金：中国地质调查局地质调查工作项目(1212011220164)

摘　　要：根据甘菜园滑坡勘察报告中甘菜园滑坡工程勘查主纵(Ⅱ-Ⅱ’)地质剖面以及甘菜园滑坡的钻孔资料,采用FLAC3D软件平台建立甘菜园滑坡的数值模型,依据测得的岩土层的物理力学参数,分析了自然状态和强降雨状态下模型竖向、水平的应力、位移特征及其稳定性。基于FLAC3D软件内置的强度折减法和Geo-slope软件极限平衡法计算了甘菜园滑坡自然和强降雨两种状态下的最危险滑动面及稳定性系数,认为该滑坡最危险滑动面位于滑坡中上部表层。According to the Gancaiyuan landslide investigation report and drilling data, FLAC3D software was used to establish the numerical model of the landslide. Getting the physical and mechanical parameters of rock and soil layer, the vertical and horizontal stress and displacement under natural and rainfall condition were analyzed. Based on strength reduction method of FLAC3D and limit equilibritun method of Geo-slope software, the most dangerous slip surface and the stability coefficient were calculated under natural and rainfall condition. It concluded that the most dangerous sliding surface was located in the upper surface of the landslide.

关 键 词：滑坡 稳定性分析 极限平衡法 强度折减法 

分 类 号：P642.22[天文地球—工程地质学]