中国典型粘黄土区地质灾害风险评估危险性影响因素分析  

An analysis of the danger influence factors of geohazard risk assessments in typical stick loess regions in China

作　　者：谭成轩[1,2] 雷伟志[1,2] 孙炜锋[1,2] 王继明[1,2] 张春山[1,2] 吴树仁[1,2] 

机构地区：[1]国土资源部新构造运动与地质灾害重点实验室 [2]中国地质科学院地质力学研究所,北京100081

出　　处：《地质通报》2008年第11期1771-1781,共11页Geological Bulletin of China

基　　金：国家"十一五"规划科技支撑课题(编号:2006BAC04B05);科技部公益基础项目(编号:2004DIB3J080);中国地质调查局项目(编号:1212010640401)资助。

摘　　要：地层岩性、岩土体结构及其工程地质特性为黄土区地质灾害提供了物质基础,黄土斜坡的坡型、坡度、坡高、阶地等地形地貌因素为地质灾害提供了边界条件,人类工程活动和降雨为黄土区地质灾害提供了触发条件。黄土地形地貌、地层岩性、岩土体结构类型及其工程地质特性、水文地质条件等为粘黄土区地质灾害形成的内在因素,降雨、人类工程活动等为其诱发因素。Stratigraphy and lithology, rock and soil mass textures and their engineering geological features afford a material basis for geohazards in loess regions. The topographic and landform factors such as the pattern, gradient, height and terraces of loess slopes are the boundary conditions for geohazards. Human activity and raining are the triggered factors to induce geological hazards. Human engineering activities and precipitation provide the triggering conditions of geohazards in loess regions. The topography and landforms of loess, stratigraphy and lithology, rock and soil textures and their engineering geological features and hydrogeological conditions are the internal factors for the formation of geological hazards in stick loess regions, and precipitation and human activities are the inducing factors.

关 键 词：地质灾害 黄土与古土壤 三趾马红土 地形地貌 岩土体结构 

分 类 号：P694[天文地球—地质学]