Multi-factor comprehensive measurement method of regional landslide hazard risk

Abstract

The invention belongs to the field of regional landslide risk monitoring and evaluation, in particular to a multi-factor comprehensive measurement method of regional landslide disaster risk, comprising the following steps: (1) determining landslide risk evaluation index and socio-economic potential damage evaluation index; (2) determining the weights of the landslide hazard evaluation indexes andthe socio-economic potential damage evaluation indexes in the area to be evaluated; (3) determining the evaluation grade of landslide hazard and socio-economic potential damage in the area to be evaluated; (4) Determining the landslide risk grade of the area to be evaluated. The potential landslide hazard coefficient and potential landslide rate of unstable landslides are used to analyze and evaluate the regional landslide hazard degree. Using GDP per capita, population density, railway and highway density, building density, the socio-economic potential damage of regional landslides is analyzed and evaluated.

Description

technical field [0001] The invention belongs to the field of regional landslide risk monitoring and evaluation, and in particular relates to a multi-factor comprehensive measurement method for regional landslide disaster risk. Background technique [0002] Due to geographical location and geological structure, my country is a country prone to geological disasters, and landslides are a major type of geological disasters. The problem of landslide geological disasters has always been serious, and landslide disasters occur frequently and are highly destructive, and can also induce many secondary disasters, such as blocking rivers, forming natural dams, and causing upstream backwaters. Especially after the reform and opening up, with the rapid development of my country's economy, the construction of various basic projects is increasing day by day, which leads to the increasing frequency of landslide geological disasters and increasing losses. Therefore, disaster prevention and m...

AI Technical Summary

Problems solved by technology

In view of the fact that the traditional mechanism analysis and statistical analysis methods are mainly based on regional landslide disasters caused by regional rainfall, there is a lack of research on other inducing factors such as earthquakes, human engineering activities, etc.; risk assessment is mainly based on the risk of regional landslides themselves, and ignores the risk of regional landslides. Assessment of socioeconomic losses and casualties; vulnerability assessment and damage loss assessment are mainly based on the assessment of vulnerability and destructiveness of socioeconomic losses and casualties, but lack of assessment of the risk of regional landslides themselves; prevention and control projects The benefit evaluation mainly focuses on the social and economic benefit evaluation of disaster prevention and reduction projects, and lacks the evaluation research on regional landslides; the risk evaluation combines the advantages of risk and vulnerability evaluation, but lacks a unified risk evaluation index system and risk assessment. Grade Criteria

Moreover, the current regional landslide risk monitoring and assessment lacks perfect regulations and technical standards, which has become an important restrictive factor in promoting regional landslide risk monitoring and assessment.

For regional landslide risk changes, the government cannot detect and make correct policy responses in time, which seriously restricts the process of disaster management and ecological civilization construction in my country

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