Gas pipe network leakage explosion risk evaluation method and system under geological disasters

Abstract

The invention discloses a gas pipe network leakage explosion risk evaluation method and system under geological disasters. The invention relates to the technical field of gas pipe network risk evaluation. The problem that leakage occurs due to the fact that the gas pipeline is affected by geological disasters is not considered when the gas pipeline is affected by geological disasters is solved. The method comprises the steps that the position relation lambda between a pipeline and the potential influence range of geological disasters is calculated, and a geological disaster susceptibility index S, a gas pipeline influence possibility index V and a gas pipeline failure consequence index C are obtained through an event chain thought; a geological disaster susceptibility index S of the located area; calculating a vulnerability index V after geological disasters, a gas pipeline failure consequence index C under various gas pipeline leakage disaster-causing modes, and a comprehensive emergency capability evaluation value beta; dividing gas pipe network leakage explosion risk levels under geological disasters; risk conditions in the whole process from geological disaster occurrence to gas pipeline influence, leakage and explosion are accurately mastered, damage and economic loss caused by geological disaster influence are reduced, and life and property safety is ensured.

Description

technical field [0001] The invention relates to the technical field of gas pipeline network risk assessment, in particular to a method and system for assessing the risk of gas pipeline network leakage and explosion under geological disasters. Background technique [0002] In our country, frequent geological disasters are very destructive and destructive to urban public infrastructure facilities. Urban gas pipelines have a certain pressure, and the transmission medium is flammable and explosive. Once geological disasters cause soil movement and surface deformation, buried pipelines can be deformed or broken under the action of soil, resulting in gas leakage. Gas leakage can easily cause casualties and property damage, such as "7.2 Guizhou Qinglong Natural Gas Pipeline Combustion and Explosion Accident". Therefore, it is necessary to evaluate the explosion risk of gas pipeline leakage when geological disasters occur. [0003] In the prior art, the publication date is August ...

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Problems solved by technology

[0006] The technical problem to be solved by the present invention is: how to solve the risk degree of the entire event of gas pipeline leakage leading to explosion consequences in the prior art after the gas pipeline is potentially affected by geological disasters, improve the practicability of the evaluation results, and facilitate the evaluation of geological disasters. Manage, control and manage the potential risks in each link of gas pipeline network leakage and explosion incidents

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