The fully automated operation system represents the predominant future direction of urban rail transit and is currently widely implemented.Despite its widespread adoption,most fully automatic operation lines in China still deploy personnel during train operations,considering factors such as safety and the timeliness of emergency disposal.However,the emergency plans and on-site disposal strategies for train operations often rely on traditional disposal experiences,lacking a comprehensive"unmanned"emergency planning system tailored to the unique functional characteristics of fully automatic systems.In this article,the overall emergency disposal process for urban rail transit operations is modeled and quantified using a generalized precedence relations network.This approach offers a modeling method for constructing emergency disposal schemes specifically tailored to a fully automated operation system.Additionally,the article achieves the evaluation and optimization of emergency disposal schemes with a focus on timeliness and decision quality as evaluation objectives.To validate the proposed method,an actual sudden fault incident on site is taken as a case study,demonstrating the construction method of the emergency disposal mode under fully automatic operations through modeling,analysis,evaluation,and scheme optimization.
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