工程地质学报2011，Vol.19Issue(5)：703-711,9.
多级旋转黄土滑坡基本类型及特征分析
BASIC TYPES AND CHARACTERISTICS OF MULTIPLE ROTATIONAL LANDSLIDES IN LOESS
摘要
Abstract
Due to concentrated distribution, strong secondary and complex structure, multiple rotational landslides in loess is one of the most complicated landslide hazard types in the loess plateau. At first, this paper gives a definition of multiple rotational landslides in loess. So,it further studies the typical basic types, the characteristics and causes of multiple rotational landslides in the loess plateau of China in terms of hazards survey, geotechnical investigation and survey. Two types of multiple rotational loess landslides are the type of Jintai and the type of Heifangtai. They have different failure mechanisms and structures. The Jintai type of the landslides includes two classes of deep-seated multiple rotational-translational landslide and deep-seated multiple rotational landslide. The Heifangtai type of the landslides has mainly two classes of middle-shallow rotational loess landslides and multiple rotational bedding loess-mudstone landslides. The Jintai landslides are mostly large-scale landslides, composed by the three strata; near-horizontal thick layer pleistocene loess, gravel layer upper pleistocene terrace and pliocene red-hard clay. The analysis indicates that triggers of multiple rotational loess landslides include neotectonic movement, lateral erosion, strata lithology and structure, irrigation and seasonally freezing and thawing. Among the triggers, groundwater is the most inducing factor. The paper lays the foundation for mechanism study of multiple rotational loess landslides.关键词
多级旋转黄土滑坡/基本类型/结构特征/成因Key words
Multiple rotational landslides/Loess/Mechanism/Structure characteristics/Causes analysis/Hazards分类
天文与地球科学引用本文复制引用
李滨,殷跃平,吴树仁,石菊松..多级旋转黄土滑坡基本类型及特征分析[J].工程地质学报,2011,19(5):703-711,9.基金项目
国家十一五科技支撑项目(2006BAC04B00),中国地质科学院地质力学研究所基本科研项目(DZLXJK201010),中国地质科学院基本科研业务费项目(2010-SYS-18). （2006BAC04B00）
