本文研究和分析了新消规条件下的地铁消防给水系统在不同阶段消防规范下的方案特点、新旧规范的差异，对不同时期城市轨道交通线路案例比较分析与研究，总结出每个阶段地铁车站消防系统的方案特点，按有无消防稳压设备的方案差别，分析如何实现自动启泵，设消防水池吸水加压和市政直抽两种水源条件分析如何确定压力开关动作值。提出地铁车站消防系统的优化方案，不断调整设计思路，结合现场调试操作经验，找到符合地铁特点的消防方案，提高地铁运营的消防安全。

This paper studies and analyzes the project characteristics of the subway fire water supply system under the new regulations under the different phases of the fire protection code, the difference between the new and the old code, compares and studies the urban rail transit lines in different periods, and summarizes the subway stations in each phase. The characteristics of the plan of the fire protection system, according to the difference of the plan with or without fire stabilization equipment, analyze how to realize the automatic start of the pump, and analyze the difference of the start pressure value of the pump with two water source conditions of the fire tank for water suction and municipal direct pumping. Propose an optimized plan for the fire protection system of subway stations, continuously adjust the design ideas, and combine on-site commissioning and operation experience to find a fire protection plan that meets the characteristics of the subway, and improve the fire safety of subway operations.

U212.3