城市轨道交通过江通道敷设方式研究

Research on River-crossing Passage Laying Methods of Urban Rail Transit

对于武汉、重庆、南京等被长江所隔的特大城市,其轨道交通线路过江段敷设方式的选择是影响生态环境、防洪河势、航运安全和资源利用的关键问题。经研究,影响城市轨道交通过江通道敷设方式选择的因素主要有通道位置的选择、两岸与过江通道衔接条件、工程地质和水文地质条件及工程实施条件等。基于资料收集和分析,从合规性、适应性、可控性、合理性出发,提出敷设方式比选的研究流程,可供类似工程参考。

For the extra-large cities separated by the Yangtze River,such as Wuhan,Chongqing and Nanjing,the laying methods for the river-crossing sections of rail transit lines is a key issue that affects the ecological environment,flood control and river regimes,shipping safety and resource utilization.Research founds that main factors affecting the choice of the laying method are the selection of channel position,joining condition of river-crossing channels on both sides,the engineering geological and hydrogeological conditions,and the project implementation conditions.Based on data collection and analysis,a research process for comparison and selection of laying methods is proposed from the principle of regularity,adaptability,controllability and rationality,which can be used as a reference for similar projects.