水利水电技术2017，Vol.48Issue(2)：143-147,154,6.DOI:10.13928/j.cnki.wrahe.2017.02.024
金沙江永善—水富段滑坡分布规律及其形成模式
Distribution law and forming mode of landslides along Yongshan-Shuifu section of Jinsha River
摘要
Abstract
In order to evaluate the stability of the bank-slope of Xiangjiaba Reservoir on Jinshajiang River (the section from Yongshan to Shuifu) after impounding and simultaneously provide reference data for the monitoring and early warning of geologic hazards during the operation period of the reservoir,a landslide database is established with GIS platform in combination with both the site investigation before the impounding and the method of remote sensing interpretation on the basis of the relevant geological map,topographical map,aerial orthophotos and commercial satellite image of SPOT-5,and then the relationship between the spatial distribution of landslide and the bank-slope structure as well as the strata therein are analyzed with the statistical method;from which four forming modes of the landslide are summarized,i.e.(1) the landslides mainly develop from the Jurassic strata located at the downstream of Xinshi Town,while the landslide distributed at the upstream of the town are controlled by Yaziba fault;(2) the distributed density of the landslide number is the maximum at the gently dipping outer stratified consequent bank slope(Ⅲ1),while the distributed density of the landslide number is the minimum at the inclined stratified bank slope (V);(3) the density of the landslide point of Jurassic artesian well group (J2z) is the maximum,while the landslide plane density of the Permian Leping group (P21)is the maximum;(4)the forming mode of the existed landslides in the reservoir area can be sortedintothe following four kinds:①the cutting-bed sliding of dipping outer stratified rock bank slope(Ⅲ2);②the consequent sliding of gently dipping outer stratified consequent bank slope (Ⅲ3);③the circular sliding of gently dipping inner stratified consequent bank slope (Ⅳ) and ④the underlying interface sliding along the colluvium or deluvium loose layer.During the both the impounding period and the operation period,the bank-slope located at downstream of Xinshi Town,especially,the gently dipping outer stratified consequent bank slope (Ⅲ 1) must be emphatically monitored.关键词
金沙江/滑坡解译/滑坡形成模式/岸坡结构/滑坡面密度/滑坡点密度/滑坡面积Key words
Jinshajiang River/landslide interpretation/landslide formation mode/bank-slope structure/landslide plane density/landslide point density/landslide area分类
天文与地球科学引用本文复制引用
崔玉龙,邓建辉..金沙江永善—水富段滑坡分布规律及其形成模式[J].水利水电技术,2017,48(2):143-147,154,6.基金项目
国家自然科学基金国际合作项目(41661134012) （41661134012）
安徽理工大学博硕士基金(11678) （11678）
