本文叙述了铁路工程地质灾害对铁路所造成的危害,指出利用遥感技术进行铁路地质灾 害调查的优越性。并以成昆铁路沙湾至泸沽段、陇海铁路宝鸡至天水段等线段利用遥感技术进行 泥石流、滑坡、崩坍等调查和动态分析的效果，说明遥感技术在铁路工程地质灾害评价中的作用。 最后，指出由于种种原因，遥感技术在铁路工程地质灾害调查应用中仍存在某些问题,但随着遥感 技术的提高，将会在地质灾害调查中发挥更大的作用。

ln this paper, the harmfulness of engineering-geological calamities to railway is discussed，and the advantages of remote sensing technique in investiga ing geological calami?ties of railway are presented. Effects of using remote sensing technique to evaluate engineer?ing geological calamities of railway are depicted and illustrated by examples of investigating landslides, collapses and debris flows, and taking a dynamic analysis of them in the sections from Shawan to Lugu of the Chengkun Railway and from Baoji to Tianshui of the Longhai Railway.