Mountain torrent disaster risk division and prediction method, system, equipment and terminal

Abstract

The invention belongs to the technical field of natural disaster risk prediction, and discloses a mountain torrent disaster risk division and prediction method, system, device and terminal. Carrying out vulnerability analysis based on a village and town unit; and carrying out risk zoning based on village and town units. The method comprehensively considers the disaster-bearing embodied flood control capability of factors such as drainage basin runoff, river section and disaster-forming water level, and can be used for representing the danger of disaster occurrence. Compared with previous risk assessment and zoning based on multi-factor overlay analysis, the mountain torrent disaster risk assessment method has the advantages that on the basis of actual survey results of mountain torrent disaster dangerous areas and mountain torrent disaster prevention and control requirements, villages and towns smaller than counties are adopted as calculation units, the actual mountain torrent disaster risk level in a small range can be revealed more clearly, and the risk assessment accuracy is improved. The defect that an on-surface prediction result obtained through superposition of disaster-inducing factors is difficult to reflect the real situation of local points is overcome, and the method is beneficial for guiding local villages and towns to formulate a more effective mountain torrent disaster prevention plan according to the actual risk degree situation.

Description

technical field [0001] The invention belongs to the technical field of natural disaster risk prediction, and in particular relates to a method, system, equipment and terminal for zoning and prediction of mountain torrent disaster risk. Background technique [0002] At present, mountain torrents are a common natural disaster in hilly areas, with the characteristics of strong suddenness, great harm and difficulty in early warning. In order to strengthen the risk management and decision-making of mountain torrents and guide the prevention and control of mountain torrent disasters, it is necessary to carry out research on the zoning of mountain torrent disasters. The concept of risk was first proposed in the field of Western economics at the end of the 19th century, and has been widely used in environmental science, nature, disasters, economics, sociology, construction engineering and other fields. The definition of risk accepted by most scholars and relevant institutions inclu...

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Problems solved by technology

[0004] (1) In the calculation of disaster risk, the existing technology is realized through hierarchical analysis and factor space superposition, which will cause risk distortion and trend deformation, and there will be cross interference between disaster-causing factors, which is not the concept of "1+1=2"

[0005] (2) Mountain torrent disasters are mostly natural disasters that occur at local points, and the surface prediction results obtained from the superposition of disaster-causing factors in the existing technology are difficult to reflect the real situation at local points

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