小型隧道掘进机的诞生
为了开挖一条直径为36英寸的硬岩隧道,项目的施工方Fithian曾尝试运用装有碳化刀具刀盘的螺旋钻机进行开挖。然而,这样的刀盘并不适用于此地层。罗宾斯被邀请参与此项目并提供崭新的小型隧道掘进机解决方案。利用这个新方法,施工方只用了仅仅一周时间就完成了隧道的贯通。
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