Self-organized sand pile model-based crowd evacuation simulation method

Abstract

The invention relates to a self-organized sand pile model-based crowd evacuation simulation method. A crowd panic spread-oriented dynamic three-dimensional self-organized sand pile model is established to perform simulation so as to obtain the stability of crowd evacuation. The method comprises the following steps of 1) mapping an evacuated individual into a sand particle and establishing the crowd panic spread-oriented dynamic three-dimensional self-organized sand pile model; 2) determining a crowd instability burst critical probability according to a sand avalanche scale; 3) solving a current crowd instability average probability of the established dynamic three-dimensional self-organized sand pile model, comparing the current crowd instability average probability with the crowd instability burst critical probability determined in the step 2), and judging a state of the dynamic three-dimensional self-organized sand pile model; and 4) performing crowd evacuation simulation verification by utilizing the established dynamic three-dimensional self-organized sand pile model by utilizing a crowd evacuation simulation software. Compared with the prior art, the method has the advantages of comprehensive consideration factors, high accuracy, possession of scientific bases, high reliability and the like.

Description

technical field [0001] The invention relates to the technical field of simulation modeling, in particular to a crowd evacuation simulation method based on a self-organizing sandpile model. Background technique [0002] At present, the research on the stability of crowd evacuation is still in its infancy. The stability of crowd evacuation is usually described by means of crowd evacuation model simulation or evacuation drills, and by observing typical phenomena such as crowd overcrowding or stampede during the crowd evacuation process. The research methods of crowd emergency evacuation stability include accident analysis, evacuation drill and evacuation simulation. The accident analysis method is convincing, but due to the impact of the disaster (such as thick smoke, etc.), the available image data of the accident is limited. Evacuation drills are intuitive, but it is difficult to study evacuation panic behavior. First, the organizers themselves are afraid of safety accidents...

AI Technical Summary

Problems solved by technology

However, this theoretical research is in its infancy, and there are several deficiencies: less microscopic analysis, complex spatial structure of sand grains in the classic sandpile model, lack of time-variability in the classic panic propagation sandpile model, and no operable analysis method has yet been formed.

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