利用国铁京门支线打造北京市郊铁路S1线的方案研究

京门支线是北京枢纽内历史最早的联络线，该线全长197公里．设有五路、西黄村、石景山、三家店、门头沟5个车站。丰沙线建成后．三家店站成为丰沙大干线上不可分割的重要车站．承担着北京枢纽内编组区段、调小列车作用。目前能力富余．能够让出部分通道及站场开行市郊铁路有五路、西黄村、石景山三站及相关区间，总长约12公里。

Research on Beijing Extension Line as Beijing Suburban Line S1

Beijing Extension Line is the first hub line in the history of Beijing Metro Lines, the length of it is of 19.7 km, with five stations including Wulu Station, Xihuangcun Station, Shijingshan Station, Sanjiadian Station, and Mentougou Station. Upon the completion of Fengsha Line, Sanjiadian Station become an inseparable station in Fengsha Railway Line, and plays an important role in hub section organization, and train transfer.