5月20日上午，山东省首次采用盾构法施工的铁路建设项目——龙烟铁路市域化改造工程的机场隧道盾构段，迎来关键节点。随着刀盘缓缓转动、盾构机徐徐向前，在山东省路桥集团承建的机场隧道盾构段，“龙烟市域号”盾构机顺利完成始发任务，标志着作为项目最后一项关键控制性工程的机场隧道，正式进入盾构掘进施工阶段，为全线铺架通道贯通按下“加速键”。
龙烟铁路市域化改造项目由山东铁投集团和烟台市共同投资、济青高铁公司建设管理。机场隧道盾构段位于烟台蓬莱国际机场内，周边环境复杂敏感，隧道穿越泄洪河道、航油管线、特种车加油库等机场建筑物群，超近距侧穿建筑物桩基；工程地质条件复杂多变，隧道穿越地层由弱风化花岗岩剧变至回填土，隧道上覆超厚层新近回填土及河道厚层砂层，不宜采用明挖或传统矿山法爆破施工，综合考虑后设计对该隧道选用了盾构法施工方案。
来源：凤凰网山东
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