Geological disasters pose a great threat to railway construction and safe operation,and the"space-air-ground"integrated comprehensive survey technology has effectively solved the problem of geological disaster survey and identification."Space-based"multi-source stereosat remote sensing technology realizes large-scale accurate identification of geological disasters in challenging mountain areas,and long time-series InSAR and high-precision GPS realize stability monitoring and analysis of high and steep bank slopes;"air-based"realistic large scene,airborne oblique photography and airborne LiDAR scanning technologies realize hidden geological disasters identification in high vegetation coverage areas;"ground-based"three-dimensional stereoscopic exploration prospecting obtains the structure,attributes and parameters of rock and soil masses;a risk assessment scheme for gully and mountain disaster chain is established to provide basis for reasonable site selection and engineering setting of construction projects.This paper introduces the methods,contents,technologies and models of monitoring and early warning for geological disasters,and looks forward to the development direction of monitoring and early warning technology.
关键词
复杂艰险山区/地质灾害/"天空地"综合勘察/山地灾害链/监测预警
Key words
challenging mountain areas/geological disasters/"space-air-ground"comprehensive survey/mountain disaster chain/monitoring and early warning
维普
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