Geological disaster liability judgment method and device

Abstract

The embodiment of the invention provides a geological disaster liability judgment method and device. The geological disaster liability judgment method includes the steps of obtaining collected regional geological disaster historic information and carrying out quantitative processing to obtain an ablation function; obtaining a white function value according to the ablation function and a preset grey white function; obtaining a standard cluster weight according to weight of different cluster indexes of the same cluster object in regional geological disaster liability grades; calculating according to the white function value and the standard cluster weight to obtain a cluster vector; carrying out cluster analysis according to the cluster vector to obtain the regional geological disaster liability grade of the cluster object. Prediction accuracy and speed of regional geological disaster liability can be improved, and accordingly prediction accuracy and efficiency of regional geological disaster liability can be improved.

Description

technical field [0001] The invention relates to the field of interpretation and analysis of regional geological disasters, in particular to a method and device for determining the susceptibility of geological disasters. Background technique [0002] Geological hazards are not only a complex surface change process in the geological environment, but also have strong regional spatial characteristics. Due to the limited understanding of the mechanism of regional geological disasters, the current prediction and response to regional geological disasters often lag behind, and active disaster prevention and mitigation measures are few and narrow in scope. Judging from the current research status of regional geological disaster susceptibility evaluation and analysis at home and abroad, the current methods for susceptibility analysis of geological disasters mainly include fuzzy mathematics, analytic hierarchy process and GIS (Geographic Information System, geographic information syste...

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Problems solved by technology

However, due to the fuzzy mathematics method emphasizing the role of extreme values, there is a lot of information loss, and the scientificity of the weight value is not clear enough; the final step of the general AHP calculation is based on the maximum value of the weight value of each factor at each level, that is, the "maximum principle". Classification, ignoring the hierarchical weights of the upper level that are smaller than it, and not considering the correlation between hierarchical weights, resulting in a decrease in the resolution of susceptibility evaluation and unreasonable evaluation results

[0003] In short, no clear and consistent method system has been established for the analysis of the susceptibility of regional geological disasters; the selection of influencing factors for the susceptibility of regional geological disasters mainly depends on the experience and the degree of mastery of relevant data, and there are large gaps. subjectivity and uncertainty; the analysis of the susceptibility of geological disasters is mainly aimed at individual geological disasters, but there are few studies on the analysis of the susceptibility of regional geological disasters, and the mathematical construction of the analysis of the susceptibility of regional geological disasters In particular, there is a lack of research on models and their analysis methods

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