三峡水库区云阳县西城滑坡蠕变研究  

The research of prophase slope creeping motion of Xicheng landslide in Yunyang County of Three Gorges project area

作　　者：范意民[1] 张静薇[1] 杨建英[1] 邓清禄[1] 

机构地区：[1]三峡库区地质灾害防治工作指挥部,湖北宜昌443000

出　　处：《中国地质灾害与防治学报》2008年第1期32-35,共4页The Chinese Journal of Geological Hazard and Control

摘　　要：一些大型的岩质滑坡往往经历过长期的变形准备。云阳县西城滑坡就是这类滑坡的一个典型实例。西城滑坡是三峡工程库区一个大型滑坡,2001年被列入三峡工程库区四大滑坡之一进行了勘察。通过勘察,对滑坡结构有了较为深入的了解,在滑坡前缘滑床中鉴别出褶皱及顺层滑动带等完整的变形系统。本文对西城滑坡滑床及前缘发育的变形构造形态、空间分布、运动学与动力学特点进行了阐述,分析了该变形系统与滑坡形成演化之间的关系,认为滑坡前期经历了重力长期作用下的斜坡岩体蠕变。本研究对于认识三峡水库区一些县城区斜坡中存在的深厚层松散地质体具有重要的指导意义。Xicheng Landslide is a typical large-scale rocky landslide which suffered a long period deformation. Xicheng Landslide is one of four big ones listed in Three Gorges Project Area, through reconnaissance its structure and deformation system including drape, cranny and sequent slide bed were deeply realized. In this paper the deformation conformation, space-distribution and kinematics of the Landslide＇ slide bed and front development are expatiated in detail, the relationship between Landslide＇s deformation system and evolvement are analyzed, and we consider that the Landslide suffered a long period gravity action and had a long creeping motion in the Landslide＇s prophase. The research in this paper has an important direction meaning for recognizing the loose geological body with deep thick layer in some counties of Three Gorges Project Area.

关 键 词：滑坡 云阳县 三峡工程 重力变形 斜坡岩体蠕变 

分 类 号：P642.22[天文地球—工程地质学]