Landslide susceptibility evaluation method based on weighted information amount method

Abstract

A landslide susceptibility evaluation method based on a weighted information amount method comprises the following steps: step 1, collecting landslide basic data of a to-be-evaluated area, and obtaining landslide disaster data of the to-be-evaluated area; step 2, based on the data collected and obtained in the step 1, analyzing the landslide disaster distribution rule and the control influence factors of the region to obtain influence factors for controlling the development of the landslide disaster of the region, and obtaining influence conditions of different levels of influence factors on the landslide disaster; and 3, calculating the information amount of the influence factors by using a weighted information amount method based on the obtained main influence factors for controlling thedevelopment of the landslide disasters in the region and the influence conditions of the influence factors of different levels on the landslide disasters, and carrying out weighted superposition calculation on the influence factors based on a GIS platform to obtain a landslide disaster susceptibility evaluation result. And the influence of subjective factors of people is reduced, the principle issimple in actual work, operation is easy, and accuracy and high efficiency are achieved.

Description

technical field [0001] The invention belongs to the technical field of geological disaster prevention, and in particular relates to a landslide susceptibility assessment method based on a weighted information method. Background technique [0002] Our country is a country with frequent landslide disasters, especially in the western region where the geological environment conditions are extremely complex, the landslide disasters have caused huge losses. The landslide susceptibility assessment is to study the possibility of landslide disasters in a certain area, usually using the grades of high susceptibility, medium susceptibility, low susceptibility, and low susceptibility to occur. Carrying out landslide susceptibility research can provide an important basis for regional urban construction land planning, project site selection, and disaster prevention and mitigation measures formulation. [0003] Landslide disasters are determined by both natural and human factors. With the...

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Problems solved by technology

[0007] In order to overcome the deficiencies of the above method, the object of the invention is to provide a landslide susceptibility evaluation method based on the weighted information method, which solves the unreasonable research process and the unreasonable processing of the impact factors in the existing evaluation method. To solve the technical problem of unreasonable and inaccurate final assessment results, the present invention selects the information volume method as the main body of the landslide disaster risk assessment method, and then weights and superimposes the information volume values ​​of different evaluation factors according to the respective weights of the evaluation factors. , and finally use the total information value to determine the risk of the study area, which reduces the influence of human subjective factors, and in actual work, the principle is simple, easy to operate, accurate and efficient

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