基于风险评价的黄土滑坡分类及特征  

The classification and features of loess landslide based on risk assessment

作　　者：唐亚明[1,2] 冯卫[1,2] 毕银强 毕俊擘[1,2] 

机构地区：[1]中国地质调查局西安地质调查中心,陕西西安710054 [2]国土资源部黄土地质灾害重点实验室,陕西西安710054

出　　处：《地质通报》2015年第11期2092-2099,共8页Geological Bulletin of China

基　　金：中国地质调查局项目(编号:1212010740907;12120114035701)

摘　　要：整理分析了国际上通用的滑坡分类方法,并对国内有关的滑坡分类体系汇总,在此基础上,将运动形式、规模大小或运动速度综合考虑,形成一个二维的分类表,提出了基于风险评价的黄土滑坡分类方法。根据该方法,黄土滑坡可分为剥落、倾倒、崩塌、滑塌、滑动、泥流、复合型7个类,每一大类再分为不同的亚类或小类,共将黄土滑坡分为7个大类,10个亚类,38个小类。每一种黄土滑坡的变形破坏方式和运动学特征不同,具有不同的规模、速率和滑移距离,因此其风险特征也不同,对不同类型黄土滑坡的风险特征做了分析和总结。Some researchers have classified the loess landslides in the light of geological conditions, origins, thickness, and failure mechanics. However, no researchers have made the classification according to the risk assessment requirement. This paper introduced the landslide classification methods abroad and summarized the landslide classifications in China’s mainland. On such a basis, the authors put forward the classification method for loess landslides based on the view point of risk assessment. The method considers the kinematics characteristics and the magnitude or speed of landslides comprehensively so as to form a two-dimensional classification table.According to the table, loess landslides can be divided into seven kinds, i.e., peel, topple, fall, slump, slide, mudflow, and complex.Each kind of landslides has its own characteristics of deformation and kinematics, and possesses its unique magnitude, velocity, and sliding distance; hence, its features of risk are different from those of others. In the end, the authors analyzed the different risk features of various kinds of loess landslides.

关 键 词：滑坡分类 黄土滑坡分类 风险特征 风险评价 

分 类 号：P642.22[天文地球—工程地质学] P694[天文地球—地质矿产勘探]