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

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.