'Three-map method' for evaluating ground fissures

Abstract

The invention relates to a 'three-map method' for evaluating ground fissures, comprising the following steps of: firstly, evaluating and zoning ground fissure risk to form a ground fissure risk zoning map, then evaluating and zoning ground fissure vulnerability to form a ground fissure vulnerability zoning map and finally evaluating and zoning ground fissure hazardness to form a ground fissure hazardness zoning map. The three-map method overcomes the defects that the prior art can not sufficiently reflect the natural and social attributes of disasters and can not comprehensively quantitatively evaluate ground fissure disasters, defines the concept of the geological disaster hazardness for the first time and puts forwards the viewpoint of evaluating the geological disaster hazardness for the first time. The invention provides an indoor similar material physical simulation analog test method for the cause of formation of the ground fissures, researches the structure characteristics and the fractional characteristics of the ground fissures and structure, physiognomy and earthquakes with the nonlinear idea for the first time and applies an artificial neural network (ANN) and geographic information system (GIS) coupling technique to evaluating the ground fissure risk.

Description

Technical field [0001] The invention relates to a method for evaluating geological hazards, in particular to a "three-map method" for evaluating geological hazards of ground fissures. Background technique [0002] Ground fissure is a supergene geological disaster phenomenon caused by internal and external forces and human activities. Compared with the fault structure in geological history, it is a structural fault activity that people can directly observe. It is common in many countries, and its frequency and scale of disasters are increasing year by year, and it has become a major type of regional geological disasters. The study of them can reverse the activity track of old structures in geological history, and contribute to reducing the loss of people's lives and property, which has important theoretical significance and practical value. my country's regional ground fissure disasters are quite serious, and there are reports of damage caused by them in 13 provinces includi...

AI Technical Summary

Problems solved by technology

In the past, only a single factor was considered in the quantitative description and prediction of ground fissures, but in recent years, the multi-factor impact research on ground fissures mainly adopts linear methods, and it is impossible to analyze the relationship between various factors that affect ground fissures. Accurate description, let alone guarantee the reliability of its forecast results

[0011] 3. In terms of geological hazard assessment, although some assessments of the risk of geological hazards and the vulnerability of disaster-affected areas have been carried out independently, they are mainly qualitative or semi-quantitative assessments, which cannot fully reflect the natural and social attributes of disasters. It is impossible to comprehensively and quantitatively evaluate the harm caused by geological disasters to the human living environment based on the evaluation results of the hazard and vulnerability of disasters, and the results obtained are also different due to the different evaluation factors and evaluation models selected by each person.

[0012] The above-mentioned independent evaluation of the risk of geological disasters and the vulnerability of disaster-affected areas in the prior art is mainly based on qualitative or semi-quantitative evaluation work, which cannot fully reflect the natural and social attributes of disasters, and cannot be based on the risk of disasters. Comprehensive and quantitative evaluation of the hazards caused by geological disasters to the human living environment; and due to the different evaluation factors and evaluation models selected by each person, the results obtained are very different, which shows that all geological disasters are currently assessed. The method is not yet mature, and feasible methods need to be explored in depth

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