2015年6月，第21卷，第2期，255-267页
June2015，Vol.21，No.2，pp.255-267 DOI: 10.16108/j.issn10067493.2014003
高校地质学报
Geological Jourmal of China Universities
三峡库区谢家包背斜与滑坡分布关系
王孔伟"，赵小明"，张帆！ 1.三快大学土木与建筑学院宜昌443002；
2.中国地质调查局武汉地质调查中心武汉430077
摘要：三峡库区作为地质灾害的多发地区，有关构造特征与滑坡之间关系以及相同局部构造上多个个体滑坡之间的因果关系研究很少。在应用相关理论方法的基础上，结合工程地质研究现状，以谢家包断层传播褶皱为研究重点，对局部构造与滑坡类型之间的关系进行深人研究，上盘断坡形态特征控制着长江流域和青干河流域滑坡群分布，使其在整体空间演化上表现出从西向东滑坡体规模逐渐减小的变化规律；长江流域滑坡群规模明显大于青干河流域滑坡群，这与断层传播裙皱两翼倾角变化密切相关，南翼青干河流域岩层倾角明显大于北翼长江流域岩层倾角。研究表明大型滑坡发生与局部构造类型及河流切割局部构造的部位相关，这种相关性不仅体现在对单个滑坡的控制，还在于对整体岸坡带演化规律、个体滑坡演化之间因果关系的控制上。
关键词：三峡库区；局部构造；滑坡
中图分类号：P642.22
文献标识码：A
文章编号：1006-7493（2015）02-0255-13
RelationshipBetweentheXiejiabaoAnticlineandLandslidesin
theThreeGorgesReservoirArea WANGKongwei',ZHAO Xiaoming',ZHANGFan
1. College of Civil Engineering and Architecture, Three Gorges University, Yichang 443002, China;
2.Wuhan Center of China Geological Survey,Wuhan 430223, China
Abstract: Geological disasters occur frequently in the Three Gorges reservoir area, but there is little research on causal relationships between landslides and structural characteristics, In particular, a number of landslides occurred in the same local structure, but their relationship has rarely been studied. Based on the related theory and the engineering geologic research, this study is focused on the Xiejiabao anticline and examining the relationship between local structures and landslide types. Hanging wall morphology controls the distribution of landslides in Chang Jiang river area and Qing Ganhe area, This makes landslide group size to decrease gradually from the west to the east. Landslide group size in the Chang Jiang river area is larger than that in the Qing Ganhe area. This is closely related to the changing dip angles of limbs of a fault-propagation fold, i.e., the dip angle in the south of Qing Ganhe is greater than that in the north of Chang Jiang River. This study shows that the large-scale landslides are related to local structure types and local river cutting structures, which control not only the evolution of landslides on the whole bonk slope, but also the evolutien of an individual landslide.
Key words: the three gorges reservoir area; local structure; landslide
Firstauthor:WANGKongwei, AssociateProfessor;E-mail:wangkongwei@126.com 收稿日期：2014-01-04；修回日期：2014-12-01
基金项目：国家973计划前期研究专项课题《大型水电工程库岸边坡致灾机理及稳定评价理论研究》（2012CB426502)；中国地质调查局基确地质调
查项目（1212010814057）联合资助
作者简介：王孔伟，男，1966年生，山东临胸人，副教授，主要从事地质灾害成因机理研究；E-mail:wangkongwei@126.com