Evacuation path optimization method based on dust explosion domino disaster-causing risks

A technology for dust explosion and path optimization, applied in instruments, data processing applications, forecasting, etc., to reduce the risk of secondary dust explosion injuries and optimize escape paths

Active Publication Date: 2019-11-26
NORTHEASTERN UNIV
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Problems solved by technology

[0003] At present, at home and abroad, personnel evacuation routes are often formulated and emergency drills are carried out for single-frequency accidents, but for accidents such as dust explosions that usually cause continuous disasters Circumstances not adequately considered

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  • Evacuation path optimization method based on dust explosion domino disaster-causing risks
  • Evacuation path optimization method based on dust explosion domino disaster-causing risks
  • Evacuation path optimization method based on dust explosion domino disaster-causing risks

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Embodiment Construction

[0039] The specific embodiments of the present invention will be described in further detail below in conjunction with the drawings and embodiments. The following examples are used to illustrate the present invention, but not to limit the scope of the present invention.

[0040] This embodiment takes the American Empire Sugar Factory where a domino effect dust explosion accident has occurred as an example. Through experience accumulation and literature investigation, the probability of the five conditions in the dust explosion pentagon is evaluated, and the steps are as follows:

[0041] Step 1: Assess the possibility of explosion caused by combustible dust involved in the hazard source dust explosion M3;

[0042] Including the possibility of dust concentration X3, the probability is 0.99, the particle size of the dust, the probability X4, the probability is 0.25, and the possibility of dust is conceivable, the probability X5 is 0.99;

[0043] Step 2: Assess the possibility that the c...

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Abstract

The invention discloses an evacuation path optimization method based on dust explosion domino disaster-causing risks, belonging to the technical field of path optimization. According to the method, FreeFta software is used for constructing an accident tree of dust explosion of a dangerous source; on the basis of obtaining five conditional probabilities of the dust explosion pentagon; the possibility F of dust explosion of the dangerous source is calculated by using FreeFta software; then, DESC software is used for simulating disaster-causing consequences of dust explosion under the domino effect; a dust explosion disaster-causing result, namely overpressure distribution, under a domino effect is obtained, the severity S of the dust explosion disaster-causing result is calculated by usinga Probit model, finally a quantitative risk value is obtained by using a risk model, and a path with a smaller risk is selected by comparing the risk to achieve the purpose of optimizing an evacuationpath. According to the method, the risk that escape people face secondary dust explosion damage is reduced, and the blank of evacuation path optimization under continuous disasters in dust explosionis effectively filled up.

Description

Technical field [0001] The invention relates to the technical field of route optimization, and in particular to an evacuation route optimization method based on the hazard risk of dust explosion domino. Background technique [0002] In metal or plastic products polishing and grinding, grain processing and other explosion-related dust production industries, due to production technology and other reasons, many densely populated production workshops or packing workshops are interconnected through dust pipelines and share a set of dust removal system. Although this method of interconnection of workshops through pipelines can greatly reduce the cost of dust removal, it also increases safety risks. When an initial explosion occurs at any point in the dust removal system, the explosion flame will spread along the interconnecting pipes to other parts of the system, resulting in a more catastrophic secondary explosion. Especially when the explosion affects crowded workplaces, it is very ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/04G06Q50/26
CPCG06Q10/047G06Q50/265
Inventor 高娟苑春苗孟凡一马泽鹏李刚
Owner NORTHEASTERN UNIV
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