Security risk assessment and early warning method for high-speed railway tunnel during operation period

Abstract

The invention relates to a security risk assessment and early warning method for a high-speed railway tunnel during operation period. The method comprises the first step of constructing an evaluationbasis, including a risk rating assessment standard, an evaluation index system and an early warning mechanism establishment: the risk rating assessment standard includes a risk possibility assessmentstandard and a risk consequence severity rating assessment standard. The risk rating assessment is based on the risk probability rating as the ordinate, and the risk consequence severity rating as theabscissa to construct a risk assessment matrix. The evaluation index system is established by the hazard factors of the four aspects of "human- things-management-environment ", and constructs the risk probability membership function of the hazard factors. The early warning mechanism is established by four-color early warning. The second step of risk rating assessment is quantitatively calculatedbased on the membership function and the second-level fuzzy comprehensive evaluation model, and conducted combining the risk consequence severity rating assessment standard and the risk rating assessment matrix. The third step of determining the early warning rating: obtained by coupling the superposition analysis risk rating and the early warning indicator risk rating. The beneficial effects of the security risk assessment and early warning method for a high-speed railway tunnel during operation period are that the evaluation results are quantified, and the decision is based on science.

Description

technical field [0001] The invention relates to a high-speed railway tunnel risk assessment technology, in particular to a safety risk assessment and early warning method during the operation period of a high-speed railway tunnel. Background technique [0002] Since the opening of my country's high-speed railway, the number of new lines has been increasing in a relatively short period of time, involving a wide range of specialties. In particular, the driving environment inside the high-speed railway tunnel is very complex, which is more complex, variable and uncertain than the environment outside the tunnel. Serious diseases often occur in high-speed railway tunnels during the operation period, which will seriously endanger the safety of driving in the tunnel, causing huge casualties and immeasurable consequences. Therefore, in recent years, my country's railway department has put high-speed railway tunnel operation safety issues at the top of the list, injected safety risk...

AI Technical Summary

Problems solved by technology

[0003] The research on risk assessment during the operation of traditional high-speed railway tunnels in my country mainly stays at the qualitative level. In the process of identifying and processing risk hazard factors, there is a lack of standardized and quantitative assessment research, which leads to the inability to assess the safety of high-speed railway tunnel operations. Scientific evaluation and precise early warning of risks

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