: 站前交叉渡线较多用于分期建设线路的初期工程终点站折返,由于线路建设分期风险的存在,线路一旦不继续延伸,其折返 能力及运营适应性就备受考验。为解决上述问题,基于南宁地铁2 号线2 期工程终点站坛泽站,提出研究该类问题的技术路线,并 从行车及信号专业角度对站前交叉渡线折返最大能力进行探究,提出增加列车减速度、提高侧向过岔速度以及土建调整配线设置3 个优化措施,得出该折返方式能满足近远期运营需求及系统规模30 对/ h 折返能力的结论。

The double crossover is usually adopted in terminal turnback of phased preliminary project. The turnback capacity and operational adaptability of the line would be restricted if the line stop extending. Hence, the technical route for studying the situation mentioned-above is proposed based on a case of Tanze Station of Phase 2 Project of Nanning Metro Line No. 2. And then the maximum turnback capacity of the double crossover is discussed in terms of driving and signal. Finally, the optimization measures, i. e. increasing the deceleration of train and laterally turnout crossing speed and line arrangement adjustment, are put forward, which can meet the short-term and long-term operational requirement and turnback capacity requirement.