市域快线站间距通常远大于常规地铁线路，在市域快线长大区间中采用常规地铁的故障救援模式及救援速度可能导致救援时间过长。为了提高市域快线长大区间故障救援效率，以广州市规划的首条160 km时速市域快线为例，在分析常规地铁故障救援流程、救援速度和救援时间的基础上，对市域快线故障救援速度进行探讨，进而设计了长大区间设置渡线和设置停车线2类方案，与无配线方案在救援时间、后续堵塞列车疏散效率等关键指标上进行综合比选，最后提出不同的区间停车线形式并进行了对比分析。研究表明： 在长大区间设置停车线的方案救援功能较好，建议在工程条件允许时优先采用；不同的区间停车线形式各有优劣，应根据实际情况综合考虑运营功能和工程规模后选择。

The station spacing of urban rail rapid transit line is usually much larger than that of conventional metro, and the breakdown rescue model and rescue speed of conventional metro for long tunnel section may lead to long rescue period. In order to improve the efficiency of breakdown rescue in long tunnel section of urban rail rapid transit line, the first 160 km/h urban rail rapid transit line in Guangzhou is taken as an example; the rescue speed of urban rail rapid transit line is analyzed and two schemes of setting up crossover line and vehicle parking line are designed based on analyzing the conventional metro rescue process, rescue speed and time consumption; a comprehensive selection is made on the key indices such as the rescue time consumption and the subsequent train evacuation efficiency. Finally, different vehicle parking lines are proposed and compared. The study results show that the setting up vehicle parking line in long tunnel is good for rescue; and it is recommended to be adopted in priority when it is allowable. Meanwhile, different types of vehicle parking lines have advantages and disadvantages; it should be selected according to the actual situation such as operation functions and project scales.