金坪子滑坡动态稳定性分析研究  

Dynamic Stability Analysis Of Jinpingzi Landslide

作　　者：欧阳珊珊 谢谟文[1] 

机构地区：[1]北京科技大学土木工程系,北京100083

出　　处：《地理信息世界》2013年第6期54-57,共4页Geomatics World

摘　　要：外界因素是影响滑坡变形和稳定状态的重要因素。进行滑坡的稳定性分析,依据监测资料进行预警预报,都有必要考虑外界因素的作用。以云南省昆明市的金坪子滑坡为背景,运用GIS及3DSlopeGIS的三维极限平衡分析方法,从地震、库水位、降雨三个外界因素单独或复合作用下的安全系数的变化情况,研究滑坡的动态稳定性。研究表明,在外界因素的作用下,通过分析安全系数—地震烈度曲线、安全系数—库水位高度曲线以及安全系数—时间曲线,可以定量判断地震、降雨、库水位对滑坡的影响,以及三者对滑坡影响力的高低顺序,为工程的预警预报提供重要参考。External factors are important factors in affecting landslide deformation and the steady state, Whether landslide stability analysis, or for warning and forecasting based on monitoring data, there is need to consider the role of external factors. Kunming, Yunnan Jinpingzi landslide as the background, using GIS and 3DSlopeGIS dimensional limit equilibrium analysis, from three external factors- the earthquake, the reservoir water level, rainfall alone or combined action, observing the changes in the safety factor to study the dynamics of landslides stability, Re.arch shows that in action of external factors, by analyzing the safety factor - seismic intensity curves, the safety factor - the water level height curves, and the safety factor - time curves can quantitative determine the earthquake, rainfall, water level on the impact of landslides, as well as the descending order of the influence.

关 键 词：外界因素 稳定性 安全系数 高低顺序 滑坡预报 

分 类 号：TU352[建筑科学—结构工程]