齐鲁晚报.齐鲁壹点于泊升 9月12日，随着开挖直径15.06米的"启航号"盾构机掘进突破1626米，济南航天大道黄河隧道工程南线隧道盾构掘进过半，跨黄隧道建设取得阶段性进展。 该项目建成后，将进一步完善黄河两岸城市路网体系，强化城市快速路与周边高速公路、重要交通枢纽的无缝衔接，对推动济南新旧动能转换起步区建 设，推动黄河流域生态保护和高质量发展具有重要意义。 黄河济南段为地上悬河，隧道穿越河段水位常高于城市地表4-5米，防洪水位则高于城市地表10.12米，在穿越黄河及两岸大堤时，盾构施工沉降要求控制 严。在穿越东岸大堤前，项目团队进行了全方位勘察，对大堤及沿线重要构筑物开展系统性调查，精准采集并梳理基础数据，为施工提供可靠依据。施工 过程中，依托信息化监测系统实时跟踪环境变化，并采用微扰动掘进工艺，最大限度降低盾构施工对周边土体的扰动，守护大堤安全。 目前，"启航号"盾构机成功攻克浅覆土始发、穿越黄河东岸大堤等技术难题，掘进至黄河水域段中心区域，实现了平稳掘进的目标。 据悉，航天大道黄河隧道由济南城市建设集团投资建设、中铁十四局集团承建，位于济南高新区、新旧动能转换起步区，是联系遥墙国际机场和起步区的 重要通 ...

Core Insights - The Jinan Aerospace Avenue Yellow River Tunnel project has achieved a significant milestone with the "Qihang" shield machine completing over half of its tunneling work, reaching a depth of 1626 meters [2] - The tunnel, which spans 3888 meters and is designed for a dual six-lane urban arterial road with a speed limit of 60 km/h, is crucial for connecting the Yaoqiang International Airport and the new kinetic energy conversion pilot area [2] - The project faces complex geological challenges, including crossing the Yellow River and its embankments, necessitating advanced engineering solutions and real-time monitoring systems to ensure safety and efficiency [3] Project Details - The shield section of the tunnel, managed by China Railway 14th Bureau, extends 3252 meters and utilizes a 15-meter diameter slurry balance shield machine [2] - The construction team customized the "Qihang" shield machine to enhance tunneling efficiency by modifying the cutter head design and improving slurry treatment capabilities [2] - The project is expected to enhance the urban road network along the Yellow River, facilitating seamless connections between urban expressways and key transportation hubs, thereby supporting ecological protection and high-quality development in the region [3]