摘要
本文基于青藏公路、铁路沿线区域约63400 km^2范围1:10万地质环境遥感调查结果进行分析研究。采用以 ETM 为主,重点地区辅以 IKONOS 的遥感数据,遥感解译与地面验证相结合的技术方法在研究区解译出数百条断层,根据这些断层的延伸方向和分布位置可归纳为20条断裂带(RF),它们与以往地面为主调查的断裂带(GF)基本吻合。本区的断裂带基本上均为活动断裂带,且都存在发震断层。滑坡、泥石流是青藏线活动构造的主要次生灾害。本区活动断裂对滑坡分布有一定影响,但并没有控制作用;地震构造不但控制了本区泥石流的分布,地震活动对泥石流活动的触发作用也非常明显。
This paper is based on the remote sensing investigation for geological environment along Qinghai- Tibet high way and railway zone about 63 400 km^2 with scale 1:100000,and does further study analysis. Through ETM image plus some IKONOS interpretation and site verifying,several hundred of faults have been interoperated in the study area which can be merged in to 20 faults zones-RF based on the distribution and extended direction in the study area,that is similar with previous ground surveyed faults-GF.All of faults zones in the study region are active faults basically and have been as the earthquake-tectonics. Landslide and debris-flow are the secondary disaster of Qinghai-Tibet active tectonics.Active tectonics has influence over landslides distribution in the region but it has no obviously control role.Earthquake-tectonics has not only controlled the distribution of debris-flows but also has been as the induced factors.
出处
《铁道工程学报》
EI
北大核心
2006年第z1期264-269,共6页
Journal of Railway Engineering Society
关键词
构造
活动断裂带
地震构造带
滑坡
泥石流
tectonics
active faults zone
earthquake tectonics zone
landslide
debris-flow
