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近日,为郑州地铁一号线作业的直径6.3 m的罗宾斯土压平衡盾构,在软土和粉土地质条件下创下月进尺720 m的项目记录,日进尺达22环。
Recently, the 6.3 m-diameter Robbins EPB for Zhengzhou Metro Line 1 recorded a project record of 720 m footage on a monthly basis in soft soil and silt geology with a daily progress of 22 rings.