Mountain torrent disaster risk assessment method and early warning system based on catastrophe theory

A technology of early warning system and catastrophe theory, applied in climate change adaptation, data processing applications, instruments, etc., which can solve the problems of lack of original data in the study area and the accuracy of impact assessment results.

Active Publication Date: 2018-05-29
JILIN UNIV
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Problems solved by technology

At present, although my country has a certain foundation in the study of mountain torrent disaster risk, due to the lack of original data in the study area and the

Method used

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  • Mountain torrent disaster risk assessment method and early warning system based on catastrophe theory
  • Mountain torrent disaster risk assessment method and early warning system based on catastrophe theory
  • Mountain torrent disaster risk assessment method and early warning system based on catastrophe theory

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Embodiment Construction

[0054] see figure 1 and figure 2 As shown, a catastrophe theory-based mountain torrent disaster risk assessment method and early warning system is characterized in that it includes a data acquisition system, a risk level evaluation system and a graded early warning system;

[0055] The data collection system includes the following steps:

[0056] 1. Determine the evaluation index system

[0057] Taking the valleys where flood disasters occurred as the research object, the factors that affect the risk of mountain torrent disasters are selected, mainly including:

[0058] D. 1 Average slope: the unit is degree (°), which reflects the degree of terrain change in the valley. The larger the slope, the shorter the time for the confluence of mountain torrents, the shorter the time for flood peaks to appear, and the more unfavorable it is for downstream flood control measures;

[0059] D. 2 Relative height difference: Under the action of rainfall, water flows to the lower place,...

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Abstract

The invention discloses a mountain torrent disaster risk assessment method and early warning system based on a catastrophe theory. The early warning system is composed of a data acquisition system, arisk level evaluation system and a graded early warning system. The data acquisition system mainly achieves automatic acquisition of impact factors of mountain torrents by means of a remote sensing interpretation, on-site investigation and on-site monitoring combined method. The risk level evaluation system uses the catastrophe theory to construct a hierarchical structure model, calculates catastrophe progression according to a primary catastrophe model layer by layer from bottom to top, and ultimately determines the level of risk based on the catastrophe progression. The graded early warningsystem converts the evaluation level into an early warning signal, sends the early warning signal to relevant government officials and sends a forecast to surrounding residents through a wireless device. The fully automated integrated system for mountain torrent date collection, disaster risk assessment and graded early warning is established for the first time, the disadvantages of strong subjectivity in raw data collection and index weight distribution are avoided, and more accurate evaluation results are obtained from an internal action mechanism of a mountain torrent system.

Description

technical field [0001] The invention relates to a natural disaster risk classification evaluation system, in particular to a method for evaluating the risk of mountain torrent disasters and an early warning system based on catastrophe theory. Background technique [0002] Mountain torrents refer to the surface runoff phenomenon caused by heavy rainfall that fluctuates rapidly. Because of its suddenness and destructive power, it is easy to cause local disasters, and because it occurs in mountainous and hilly areas, it is called mountain torrent disasters. Due to its wide range of influence and strong destructiveness, mountain torrent disasters not only caused huge damage and threats to the lives and property safety of people in mountainous areas, but also became a major bottleneck problem restricting the economic development of mountainous areas. Therefore, the assessment and early warning of the risk of mountain torrent disasters are very important for effective disaster pre...

Claims

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Application Information

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IPC IPC(8): G06Q10/06G06Q50/26
CPCG06Q10/0635G06Q10/06393G06Q50/26Y02A10/40Y02A40/22
Inventor 宋盛渊赵世威陈剑平张志敏张哲张宜伟
Owner JILIN UNIV
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