特大规模滑坡遥感调查──巧家县城滑坡  

Remote Sensing Investigation for a Huge Landslide──Qiaojia County Landslide

作　　者：王治华[1] 

机构地区：[1]地质矿产部地质遥感中心

出　　处：《环境遥感》1996年第4期280-284,共5页

摘　　要：目视解译１：６７万彩红外航空象片发现巧家县城斜坡显示为典型的滑坡地形。经实地验证及结合地质资料、航空象片、卫星象片综合解译分析认为：根据斜坡形态、金沙江异常弯道、斜坡上松散物质分布及所处地质环境与降雨条件确定巧家斜坡为－巨型古滑坡，估算体积约１２０×１０８ｍ３，就我们所查阅到的国内外报道中为一最大规模古滑坡，年龄约１０万年。目前，滑坡整体已经稳定，但后壁、侧壁及滑体上发育的大量次生崩塌、滑坡、泥石流还将长期活动。Batal on the interpretation of the colour infrared aerophoto (1: 67000) and site verification, the Qaojia slope is considered as a huge ancient landslide which shows typical landslide features, pushing the Jin Sha River and formed an abnormal curve channel, and is coved with loose soil and debris. Qaojia slope, surrunded with large scale active faults is located in the west wing of an anticline and consists of layers prone to slide. The earthquakes there have for intense and frepuent.Heavy rainfall always concentrate in rain season. The landslide occurred about 100,000 years ago.Now,the whole landslide is already stable, but secondary collapse, landslides, and debrisflowes have been developed near the scarp and on the slide body.

关 键 词：滑坡 遥感 泥石流 古滑坡 

分 类 号：P642.22[天文地球—工程地质学]