日前,中铁十四局承建的甬舟铁路金塘海底隧道进口开工建设,标志着国内最长高铁海底隧道矿山法施工段开始施工。

金塘海底隧道进口施工现场
甬舟铁路正线全长约76.4公里,线路西起宁波东站,向东延伸至舟山市金塘岛、册子岛及舟山本岛,是实现浙江省高铁1小时交通圈建设目标的重要工程。金塘海底隧道是甬舟铁路全线控制性工程,全长16.18公里,是国内设计长度最长、承受水压最大的海底高铁隧道。
中铁十四局承担了该隧道开挖、管片预制、铺轨等施工任务,含矿山法、盾构法施工段。矿山法施工段下穿既有隧道净间小,施工难度大。项目施工团队制定针对性监测方案,通过超前地质预报研判断层及不良地质变化范围,确保工程建设顺利推进。
甬舟铁路建成后,将结束舟山不通铁路的历史,对加快舟山及宁波融入“一带一路”和长江经济带国家经济发展战略,支撑长三角一体化国家重大战略实施具有重要意义。
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