Abstract:Research purposes ; In the progress of railway engineering geological survey,these issues exist that contain narrow artificial investigation range,great intensity labor, the slow pace of work,difficult to guarantee mapping quality. Remote sensing technique can significantly make up for the deficiency of the ground geological mapping, supplementary geological mapping and exploration arrangement. But in practical application,single method and limited visual interpretation precision cause remote sensing application not deep in late exploration stage,and need to further study on fine interpretation technique and detailed work program,to achieve the goals of accurately guide geological investigation and reduce the outdoor workload.
Research conclusions:(1)Technology system of geological remote sensing consists of nine modules,which includes remote sensing image selection,multi-source data management,image interpretation,remote sensing assessment and integrated survey, formed a new model based remote sensing for railway geological survey.(2)With modern multi- scale remote sensing earth observation techniques and large-scale interpret technology,we can accurately obtain valid information of geological disasters, surface changes,labor activities,complements the regional geological data. (3 ) Technology system of geological remote sensing shows information,standardization and systematization characteristics,and forms industry technical standards and operating procedures. ( 4)The research results can be used in the railway line selection,engineering geological survey and exploration layout work.
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