Gas pipeline toughness evaluation method and device

Abstract

The embodiment of the invention provides a gas pipeline toughness evaluation method and device, and the method comprises the steps: carrying out the unitization of a gas accident according to the flowof the accident to obtain an accident unit of the gas accident; detecting a to-be-evaluated gas pipeline, and obtaining a trigger factor and a rescue factor associated with the accident unit of the gas pipeline; calculating the occurrence probability corresponding to the accident unit according to the trigger factor, and calculating the rescue difficulty corresponding to the accident unit according to the rescue factor; and calculating the toughness value of the gas pipeline according to the occurrence probability corresponding to the accident unit and the rescue difficulty. The toughness value obtained by the method can comprehensively represent the accident occurrence probability of the to-be-evaluated gas pipeline before an accident occurs and the resilience after the accident occurs.

Description

technical field [0001] The invention relates to the field of gas pipeline evaluation, in particular to a gas pipeline toughness evaluation method and device. Background technique [0002] In recent years, with the increasing demand of urban residents for gas, the scale of urban gas pipeline network has also increased, but the popularity of gas pipeline network is also accompanied by risks, because most of these pipelines are buried underground, After the leakage, a large amount of flammable gas is directly or indirectly produced. If it spreads to the adjacent underground space, a large-scale serial explosion may occur when it encounters an ignition source, resulting in the destruction of several kilometers of roads and a large number of casualties. In order to scientifically manage the operation of the gas pipeline network, it is necessary to conduct a comprehensive risk assessment of the safety risks of the gas pipeline network. [0003] However, the current risk assessmen...

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Problems solved by technology

[0002] In recent years, with the increasing demand of urban residents for gas, the scale of urban gas pipeline network has also increased, but the popularity of gas pipeline network is also accompanied by risks, because most of these pipelines are buried underground, After the leakage, a large amount of combustible gas will be produced directly or indirectly. If it spreads to the adjacent underground space, a large-scale chain explosion may occur when encountering an ignition source, resulting in the destruction of several kilometers of roads and a large number of casualties.

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