此次贯通的棘洪滩车辆段出入线区间长约1.28公里，从天南区间明挖段起始，向西沿新城二路延伸，下 穿多处临街商铺与厂房，上跨天南区间右线后，下穿青银高速路基及山东物博公司厂房，最终接入车辆 段。沿线穿越多处对沉降控制严苛的建构筑物和破碎带。 12月16日，随着青岛棘洪滩车辆段出入线区间右线盾构机缓缓驶出，由中建二局承建的青岛地铁15号线 项目区间全部贯通，标志着这条串联青岛市即墨、城阳、李沧三区的南北向交通大动脉建设取得重大突 破，正式迈入全新阶段。 作为青岛市轨道交通三期规划的重点工程，青岛地铁15号线一期工程起于下王埠站，终至四方厂站，线 路全长约31.5公里，全地下敷设，设车站17座，棘洪滩车辆段1处。 一期工程土建2标施工单位为中国建筑，共含5站5区间，其中，中建二局承建1站2区间，即：天山二路 站、天山一路站~天山二路站区间(简称天天区间)和棘洪滩车辆段出入线区间，天天区间已于2025年7月 6日双线贯通，棘洪滩车辆段出入线盾构左线于2025年10月1日贯通。 自棘洪滩车辆段出入线盾构始发以来，项目团队就充分展现了责任感与专业智慧。在全程施工中，团队 始终坚持严谨细致的作风，精密调控掘进参数，精确管理 ...

Group 1 - The successful completion of the TBM left line between Tianshan First Road Station and Tianshan Second Road Station marks a significant milestone for the construction of Qingdao Metro Line 15, accelerating the overall project progress [2][3] - The project team employs a refined, intelligent, and mechanized management approach, utilizing a "double-line linkage" mechanism to apply experiences from the right line construction to the left line [2] - The TBM section, approximately 2.5 km long, overcame various technical challenges, including fault zone excavation and surface settlement control, through advanced techniques such as "pre-injection grouting reinforcement + intelligent drainage monitoring" [2][3] Group 2 - The construction of Qingdao Metro Line 15 is crucial for connecting the districts of Chengyang, Licang, and Laoshan, effectively alleviating north-south traffic pressure in the main urban area [3] - The project team emphasizes strict adherence to the "team responsibility system" and proactive geological forecasting to ensure precise analysis and control throughout the construction process [3] - Moving forward, the company aims to enhance safety and quality control, optimize process coordination, and ensure efficient progress of the remaining construction work [3]