Evaluation method of debris flow disaster risk based on Bayesian network model

Abstract

The embodiment of the invention provides an evaluation method of the debris flow disaster risk based on a Bayesian network model. The evaluation method is characterized by comprising the following steps of: determining an evaluation unit; obtaining an evaluation index of the debris flow disaster risk of the evaluation unit by processing an evaluation parameter of the debris flow disaster risk of the evaluation unit; creating a training sample set according to historical data of the debris flow disaster risk in the evaluation unit and the evaluation index; creating the Bayesian network model according to the training sample set; and evaluating the debris flow disaster risk in an area to be evaluated by adopting the Bayesian network model. According to the evaluation method provided by the invention, the Bayesian network model is created by combining the historical data of the debris flow disaster risk in the evaluation unit and the evaluation index, the debris flow disaster risk in the area to be evaluated is evaluated by adopting the Bayesian network model, the accuracy of a debris flow disaster risk evaluation result is greatly increased, and the debris flow disaster risk in the area to be evaluated can be accurately evaluated by adopting the evaluation method.

Description

technical field [0001] The invention belongs to the technical field of risk assessment of natural disasters, and in particular relates to a method for assessing the risk of debris flow disasters based on a Bayesian network model. Background technique [0002] Debris flow is a common geological secondary disaster. Debris flows can accumulate in a short period of time, and then the sliding body quickly converts potential energy into kinetic energy. Debris flow disasters will bring huge disasters to people's lives and property, and pose a great threat to social and economic development. Therefore, regional debris flow disaster risk assessment is of great significance to the healthy, rapid and sustainable development of regional economy. The risk of debris flow disasters is a comprehensive reflection of the degree of debris flow disaster activity in a region in a certain period of time, that is, the density, scale, frequency, and possible damage range and hazards of a certain ...

AI Technical Summary

Problems solved by technology

However, the evaluation results obtained by the existing risk assessment methods for these debris flow disasters are not very accurate, and it is impossible to make an accurate assessment of the risk of debris flow disasters in the evaluation area.

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