岷江上游干流岸坡主要表生地质灾害分布特征及成因浅析  

RESEARCH ON HYPERGENE GEOLOGICAL HAZARDS IN THE UPSTREAM OF MIN RIVER

作　　者：蒋良文[1] 王士天[2] 刘汉超[2] 李渝生[2] 王运生[2] 

机构地区：[1]铁道第二勘察设计院地路处,成都610031 [2]成都理工大学工程地质研究所,成都610059

出　　处：《地质灾害与环境保护》2002年第1期13-17,共5页Journal of Geological Hazards and Environment Preservation

摘　　要：岷江上游地处我国著名的南北向地震带的中段 ,因其特定的地质环境导致区内表生地质灾害极为严重。通过对岷江上游 (汶川以上 )河段的崩塌、滑坡、泥石流等表生地质灾害的调查研究 ,其分布沿岷江两岸具有明显的分段特征与河谷地貌分段基本一致 ,它们形成发展与特定地形地貌、易崩滑或软弱地层、特殊的构造部位。The upstream of Min River is situated in the valley of transitional area between Qingzang plateau and Sichuan basin, the East of inverted-triangle-shaped fault block in the northwest of Sichuan, of the northeast edge of Qingzang plateau. Due to its specific tectonic environment and intensive modern crust movement, Avalanches, landslides, debris flow and other hypergene geological hazards are rather serious. Improvements have been made in hypergene geological hazards in this paper: Based on investigation of avalanches, landslides, debris flow and other hypergene geological hazards and other reference data, we conclude that their distributions were controlled by active faults, lithologic characteristics of strata, topography and geomorphy of river valley and seismic activity.

关 键 词：岷江上游 表生地质灾害 崩塌 滑坡 泥石流 分布特征 地貌 地形 

分 类 号：P642.2[天文地球—工程地质学]