结合城市轨道交通新线及既有线网的实际运营条件，分析新线客流预测、新线与既有线网的衔接关系及线网客流分布特征，从运力运量、设备设施能力匹配的角度，研究新线开通后对既有线网运营的影响。以2011年底新开通的北京轨道交通15号线一期东段为实例，利用仿真的手段，研究该线开通可能对北京轨道交通既有线网运营带来的影响，提出应对措施与建议。

After the opening of new urban rail transit lines，the passenger flow of the new lines will be linked to the existing metro network which should be considered and the operational weakness of the network should be identified in order to ensure a successful start of the new line and the safe and stable operation of the whole network． Considering the present oper - ational conditions of the new line and existing metro network， this paper analyzes the new line’s passenger flow prediction， new line’s connection with the existing network and the featu-res of passenger flow distribution，and studies the new line’s influence on the existing network in terms of transport ability and volume，and the matching of equipment and facilities． Citing the eastern section of Beijing metro Line 15 phase 1 project which opened at the end of 2011 as an example，this paper explores its possible effect on the existing network’s operation and puts forward solutions and suggestions．