Highway geological disaster risk assessment method

Abstract

The invention discloses a highway geological disaster risk assessment method, including the following steps: step S100, establishing a plurality of regional digital elevation models (DEM) based on a high-resolution satellite remote sensing technology, simultaneously generating high-resolution digital orthophoto maps (DOM) of a plurality of regions, recording and storing remote sensing informationdata of different regions, and extracting geological disaster factors of each region; step S200, performing quantitative statistical analysis on the geological disaster factors in the step S100; and step S300, adopting two different data processing methods for the quantitative statistical analysis described in the step S200, including quantitative processing and qualitative processing. Thereby, the quantitative expression of highway geological disaster risks can be realized, high-resolution satellite stereo image data is adopted to perform remote sensing identification and qualitative analysis, automatic information extraction and quantitative statistical analysis on highway geological disasters such as landslides and collapse, and thus the function of accurately and efficiently assessingthe highway geological disaster risks can be realized.

Description

technical field [0001] The invention relates to the technical field of road geological disaster risk assessment, in particular to a road geological disaster risk assessment method. Background technique [0002] Road geological disasters such as landslides and collapses seriously threaten the safety of human life and property. With the rapid improvement of the national road network in mountainous areas and central and western regions, various sudden geological disasters often cause devastating damage to road transportation infrastructure, resulting in Due to the huge loss of national property and people's lives, and heavy damage to the regional economy and ecological environment, it is very important to carry out geological disaster risk assessment in the whole life cycle of road projects to realize the prevention and mitigation of geological disasters in road traffic. [0003] At present, the risk assessment of geological disasters is mainly based on ground work such as data...

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Problems solved by technology

[0004] As a linear traffic project, highway engineering has a long route, spans different geological and geomorphic units, and has a complex geological environment. Geological remote sensing interpretation is often used supplemented by traditional ground survey methods. Remote sensing technology has the ability to perform dynamic observations macroscopically, accurately, and comprehensively. and monitoring capabilities, geological remote sensing interpretation is very conducive to remote sensing identification and qualitative analysis of geological disasters, but there is a lack of quantitative analysis methods for remote sensing information, which cannot meet the needs of rapid identification and quantitative analysis of large-scale, multi-hazard geological disasters

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