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6月12日,我国第一条城市铁路大直径泥水盾构隧道——天津西站至天津站地下直径线盾构隧道正式贯通。在隧道贯通过程中,一条“地下蛟龙”——长60多米、足有4层楼高、总重达1,600多吨的盾构机大显身手,成功穿越了多个风险点,实现了天津西站和天津站在地下的对接。据介绍,“地下蛟龙”是一台直径为11.97米的泥水加压平衡式盾构机,是国内目前已经完成任务的直径最大的铁路盾构机。记者在施工现场看到,盾构机最前端的刀盘是一个庞大的金属圆盘,上面安装了很多刀具。工作人员介绍,盾构机工作时刀盘像旋转的电风扇,随着旋转,前面的泥土不断地被切削
June 12, China’s first large-diameter urban railroad slurry shield tunnel - from Tianjin West Railway Station to Tianjin Station Underground Diameter Shield Tunnel officially through. In the tunnel through process, a “underground dragon ” - more than 60 meters long, full 4-storey building, a total weight of more than 1,600 tons of shield machine to show their talents to successfully cross a number of risk points to achieve the Tianjin West Station and Tianjin station docking in the ground. According to reports, “underground dragon ” is a diameter of 11.97 meters mud pressure balancing shield machine, is currently the task of completing the largest diameter of the railway shield machine. The reporter saw at the construction site that the front cutterhead of the shield machine is a large metal disk with a lot of tools installed on it. Staff introduction, the shield machine work like a rotary fan blade, with the rotation, in front of the soil is continually being cut