川藏铁路康定至昌都段滑坡崩塌灾害特征及空间分布规律  

Characteristics and Spatial Distribution of Landslidesand Collapses in the Kangding-Qamdo Section of the Proposed Sichuan-Tibet Railway

作　　者：李秀珍[1,2] 崔云[1,2] 张小刚[1,2] 钟卫[1,2] 黄森旺[2] LI Xiu-zhen;CUI Yun;ZHANG Xiao-gang;ZHONG Wei;HUNG Sen-wang(Key Laboratory of Mountain Hazards and Surface Process,CAS,Chengdu610041;Institute of Mountain Hazards and Environment,CAS,Chengdu610041)

机构地区：[1]中国科学院山地灾害与地表过程重点实验室,成都610041 [2]中国科学院成都山地灾害与环境研究所,成都610041

出　　处：《四川地质学报》2019年第3期441-446,共6页Acta Geologica Sichuan

基　　金：国家自然科学面上基金项目(Y8K1200200);中国科学院科技服务网络计划STS项目(KFJ-EW-STS-094)项目资助

摘　　要：拟建川藏铁路康定-昌都段全长近700km,地质条件复杂,地貌类型多样。通过野外实地调查及遥感解译等方法,查明了铁路沿线崩塌滑坡灾害的类型、特征及空间分布规律,为川藏铁路选定线及安全建设和运营提供科学依据。通过分析研究得出:康定至昌都段铁路崩滑灾害规模总体以中小型为主,中型、小型灾害占崩滑灾害总数的80%;崩滑灾害集中分布藏曲、欧曲高山峡谷地段,三叠系浅变质的砂板岩、千枚岩等软岩地层中,构造线交叉复合部位、活动性断裂破碎带以及新构造运动相对集中的强地震分布区。The Kangding-Qamdo section of the proposed Sichuan-Tibet Railway is about 700 km long.The section is characterized by complex geological conditions and various landforms.Geological survey with remote sensing interpretation find out the type,characteristics and spatial distribution of landslides and collapses along the railway,providing a scientific basis for construction of the railway engineering.From the geological survey it is concluded that:①There are 206 landslides and 186 collapses in the Kangding-Qamdo section.These hazards are mainly medium and small in size.②According to the mechanism and inducing factors,the landslides may be divided into 5 categories and the collapses may be divided into 2 categories.③The geohazards are mostly distributed over high mountains and deep valleys.④The geohazards are characterized by uneven and swarm distribution with higher density nearly Kangding and Qamdo and less density in the middle part.

关 键 词：崩塌滑坡 特征 类型 分布规律 康定至昌都段 川藏铁路 

分 类 号：P642.22[天文地球—工程地质学]