ACTIVE TECTONICS AND ITS SECONDARY DISASTERS ALONG QINGHAI-TIBET LINE

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.