转自：北京日报客户端 今天（12月27日）首班车起，地铁17号线中段（工人体育场—十里河）、18号线（马连洼—天通苑 东）、6号线南延（潞城—潞阳）等3条（段）城市轨道交通新线开通试运营，新增运营里程约30公里。 北京城市轨道交通运营总里程达到909公里，标志着首都轨道交通网络规模、服务能力与综合交通承载 力迈上新台阶。 此次开通的新线将新增城市北部东西向轨道交通廊道、打通东部南北向通勤大动脉、完善城市副中心交 通配套，为回龙观、天通苑、北七家、潘家园、亦庄等大型居住区提供更加便利的公共交通选择，进一 步加密中心城区线网、强化重点功能区连接、提升通勤效率，轨道交通的骨干作用将进一步凸显，对完 善轨道交通网络、优化城市空间结构、缓解区域交通拥堵、服务沿线重点功能区发展具有重要意义。这 也是本市持续构建以轨道交通为骨干、地面公交为支撑、多种出行方式为补充的综合交通体系的又一扎 实进展。 17号线全线贯通，南北向再添大动脉 地铁17号线是一条贯穿城区南北的大运量轨道交通干线，串联亦庄、CBD、未来科学城、天通苑、北 七家等多个居住区与办公区。此前南段（嘉会湖—十里河）和北段（工人体育场—未来科学城北）已分 段开通， ...

Group 1 - The construction of Hangzhou Metro Line 18 Phase I is progressing well, with most stations entering the foundation excavation stage, marking significant advancements in the project [1] - The Huajiachi Station's parking line features the "Triumphant" shield machine, which is the first ultra-large rectangular shield machine used in metro parking line tunnel construction in China, designed to minimize the impact on surface buildings and traffic [1] - The project spans 48.3 kilometers with 19 stations, 15 of which are transfer stations, enhancing connectivity between the main urban area and the suburban regions of Linping and Xiaoshan [1] Group 2 - The Hangzhou Metro Line 9 Phase II, located in Linping District, is 10 kilometers long with 7 stations, currently progressing into the shield tunneling phase [2] - The Hangzhou Metro Line 15 Phase I, approximately 41 kilometers long with 30 stations, has also made significant progress, with key structural milestones achieved at various stations [2]