第三系缓倾角红层滑坡基本特征及形成机制研究  

Characteristics and Formation Mechanism of the Slow-inclination Red Layer Landslide in Tertiary Stratum

作　　者：李畅[1] 任光明[1] 韩爱果[1] 李惠民[1] 

机构地区：[1]成都理工大学地质灾害防治与地质环境保护国家重点实验室,四川成都610059

出　　处：《水利与建筑工程学报》2017年第4期112-116,共5页Journal of Water Resources and Architectural Engineering

摘　　要：由于第三系红层中滑坡灾害频发,对该类发育于弱胶结地层中的滑坡进行系统研究不仅有利于滑坡的早期识别而且对其防治措施的设计具有指导意义。以第三系地层中发育的一缓倾角红层滑坡为研究对象,通过现场调查对滑坡区地质环境条件与滑坡基本特征进行了总结归纳,并定性分析了其形成机制。结果表明:该滑坡为典型的推移式降雨诱发型顺层岩质滑坡;顺坡向、缓倾角的地质结构以及软硬相间的岩性组合是滑坡发生的地质条件;河流的侵蚀是滑坡产生的外部动力;强降雨是导致滑坡产生的直接诱发因素。Due to the frequent occurrence of landslide disasters in the tertiary red layer,systematic research on the landslides developed in the weak cemented stratum is not only beneficial to the early identification of landslides,but also have a guiding significance for the design of its control measures. A slow-inclination red layer landslide developed in tertiary stratum is studied in this paper. Through the field investigation,the geo-environment conditions and the basic characteristics of the landslide are summarized,and the formation mechanism is analyzed qualitatively.The results showed that it is a typical precipitation type of bedding rock landslide. The slow inclination geological structure along the slope direction and the soft-hard litholotic combination are the geological conditions of the landslide. The erosion of Longmendong River is the external force of the landslide. Heavy rainfall is the direct cause of the landslide.

关 键 词：第三系地层 缓倾角红层滑坡 基本特征 形成机制 

分 类 号：P642.22[天文地球—工程地质学]