摘要
利用遥感技术对吉林省地质灾害进行了较详细的解译 ,共解译出 12 8处滑坡 ,其中软岩滑坡 6 6处 ,碎石滑坡 5 0处 ,硬岩滑坡 12处 ,解译出规模较大的泥石流 12 6处 ,崩塌 4处 ,沼泽化严重的地带百余处。对土地沙化、土地盐碱化、水土流失、水库淤积及河流改道等也做了较详细的解译 ,提出了各种地质灾害的形成条件及影响因素。滑坡、泥石流、崩塌的形成与地形坡度、岩土体类型、水网密度等关系密切 ,地震也可诱导滑坡产生。水土流失、水库淤积主要与地形坡度、植被覆盖率、岩土体类型及水网密度有关。河流改道是第四纪地壳运动的区域性断块隆起和凹陷、或断裂的相对升降运动、或地壳上升运动的差异性所致。土地沼泽化、土化盐碱化主要形成于排水不畅地带。
The total 128 landslides had been interpreted by using remote sensing technology for the geologic hazards in Jilin province Among them there are 66 loose landslides,50 detrital slopes,12 hard detrital slopes,126 large scale mud-rock flows,4 collapses,and more than hundred serious marshlands,also,including sanding of soil,salting of soil,loss of water and soil,siltation of reservoir and shifting of river The forming condition of the various geologic hazards and their effects were proposed in this paper The forming of landslides,mud-rock flows,collapses are related with topographic slope,rock-soil type and density of water system The loss of water & soil,and siltation of reservoir are mainly related with topographic slope,vegetation-covered rate,rock-soil type and density of water system The cause of the shifting of river is a relative elevation and subsidence by the regional block uplift,depression or fault of the Quaternary crustal movement The swamping and salting of soil are mainly formed in the weak drainage area At last,the appropriate measures were proposed for different geologic hazards
出处
《吉林地质》
2002年第1期92-98,共7页
Jilin Geology
