成都理工大学学报（自然科学版）2011，Vol.38Issue(5)：529-537,9.
大渡河流域地质灾害特征与分布规律
Characteristics and distribution of the geology disasters of the Dadu River in Sichuan, China
摘要
Abstract
All kinds of geological disasters are easy to occur along the Dadu River in Sichuan, China. The hidden spots of the geological disasters have amounted to 2212, and the geological disasters are debris flow and landslide. The quantity of debris flow is 756, that of landslide is 801, that of collapse is 301, and that of the latent unstable slope is 354. The collapses are mainly distributed along the Dadu River upstream and influenced by the geologic structure. The collapses relatively develop few along the Dadu River middle reaches. They are related with the lithological character closely and are mainly distributed over dolomite, granite and marble areas. But along the downstream, because of the gentle topography, only few debris flows develop in the basalt area. The landslide is mainly distributed along the upstream of the Dadu River. The landside mass consists of glacial tills and slope sediments primarily. It is very difficult to find the penetration sliding surface. The sliding is primarily creeping motion distortion. The landslides most grow along the middle reaches, mostly in the Xigeda Group strata, the battie clamps strata and so on slate and coal bed. There are few landslides along the downstream. They mainly grow in the purple-red sandstone area. The debris flows are mainly distributed along the middle and upper reaches Danba to the Shimian section of Dadu River; there are plentiful source, the terrain, the rainfall and the catchment. Along the middle and lower reaches, there are relatively few debris flows, most caused by the human project activities. Because along the downstream, the topography is relatively gentle and there is not very good catchment condition, the debris flow does not grow.关键词
大渡河流域/地质灾害/特征/分布规律Key words
Dadu River/ geologic disaster/ characteristics/ distribution分类
天文与地球科学引用本文复制引用
巴仁基,王丽,郑万模,李宗亮,李明辉,刘宇杰,倪化勇,徐如阁..大渡河流域地质灾害特征与分布规律[J].成都理工大学学报（自然科学版）,2011,38(5):529-537,9.基金项目
国土资源大调查项目(水[2008]005-3,水[2009]03-12-02) （水[2008]005-3,水[2009]03-12-02）
科技部科技基础性工作专项(2001FY110100) （2001FY110100）
