Geological disaster susceptibility evaluation method and device

Abstract

The invention relates to the technical field of geological disaster evaluation, in particular to a geological disaster susceptibility evaluation method and device, wherein the method comprises the following steps of selecting an evaluation factor of a study region, wherein each evaluation factor has various types; obtaining the weight among the evaluation factors; calculating different kinds of information quantity values of each kind of evaluation factor according to the existing disaster region factor obtained in advance; calculating the integral information quantity value of the study region according to different kinds of information quantity value of each kind of evaluation factor and the weight among the evaluation factors; determining the geological disaster susceptibility evaluation result of the study region according to the integral information quantity value. By using the method, the geological disaster susceptibility evaluation result errors are reduced.

Description

technical field [0001] The invention relates to the technical field of geological disaster evaluation, in particular to a method and device for evaluating the susceptibility of geological disasters. Background technique [0002] Prediction and analysis of susceptibility to geological disasters is an important task in the prevention and control of geological disasters in mountainous areas. In order to proactively and effectively prevent and reduce disasters and reduce casualties and property losses caused by regional geological disasters, it is first necessary to have a comprehensive and systematic understanding of the characteristics of regional geological disasters, and to master their spatial distribution, location, scale, frequency and Only by the relationship and law that they obey each other can we have a deep and macroscopic grasp of geological disasters, and also lay the foundation for the evaluation and division of geological disaster susceptibility. [0003] At pre...

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Problems solved by technology

[0003] At present, in the existing evaluation models of geological disaster susceptibility, subjective judgment methods or objective analysis methods are mostly used. Among them, the subjective judgment method is often evaluated by artificial scoring, which has relatively large subjective factors, which leads to the evaluation results being biased. On the contrary, the objective analysis method discovers the rules through the statistical analysis of the evaluation factors, which has a strong mathematical theoretical basis, but this method often ignores the importance of expert experience, which may also lead to calculation results far from reality

Both of the above methods lead to large errors in the evaluation results.

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