Analysis of organizational difficulties in continuous construction of existing lines in the renovation of subway signal systems
地铁信号系统改造中既有线路不停运施工的组织难点分析

摘要

地铁信号系统改造在既有线路不停运条件下推进，施工组织面临空间受限、时段压缩与系统高度耦合等多重挑战。列车密集运行背景下，任何施工扰动均可能放大为运营风险，因此需在确保行车安全的前提下统筹施工窗口、设备切换策略与多专业协同机制。通过对典型改造场景的分析，可归纳出施工边界不清、风险评估难度高及应急链条复杂等关键难点，并提出以精细化计划管理、分阶段割接方案和高可靠临时保障系统为核心的组织思路，以提升不停运条件下施工组织的可控性与安全裕度。

Abstract

The renovation of the subway signal system is being carried out under the condition of uninterrupted operation of existing lines, and the construction organization is facing multiple challenges such as limited space, compressed time periods, and high system coupling. In the context of dense train operation, any construction disturbance may be amplified as operational risk. Therefore, it is necessary to coordinate construction windows, equipment switching strategies, and multi-disciplinary collaboration mechanisms while ensuring train safety. Through the analysis of typical renovation scenarios, key difficulties such as unclear construction boundaries, high difficulty in risk assessment, and complex emergency chains can be summarized. An organizational approach centered on refined planning management, phased cutover plans, and highly reliable temporary support systems is proposed to enhance the controllability and safety margin of construction organization under non-stop conditions.