地铁规范要求轨交线路在进出水域的两端适当位置设置防淹门或采取其他防淹措施。由于规范没有对河流或湖泊的特征进行明确的定义,在轨交建设过程中,各地对该条文的理解和执行的情况不一致,甚至自相矛盾,给业主和设计单位带来很大的困扰。本文以成都轨交防淹门设置为案例,对正确理解该条文和执行标准进行一些探讨并提出了一些建议。 Subway regulations require rail crossings at both ends of the water entering and leaving the floodgate at appropriate locations or other flooding prevention measures. Since the code does not clearly define the characteristics of rivers or lakes, the understanding and enforcement of this provision in various places is inconsistent or even contradictory in the process of rail transit construction, causing great distress to owners and designers. This article takes Chengdu rail transit flood control gate set as a case, and makes some discussions on the correct understanding of this clause and implementation standards and puts forward some suggestions.