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0概况金额2.8亿美元的C710合同,包含白孔山区间隧道和车站隧道,它是西雅图捷运交通中央轻轨线路(连接西雅图市区和西达克机场,长22km)的一部分。穿越北孔山的2条区间隧道(各长1.3km)采用日本三菱土压平衡盾构开挖,现已完
0 Profile The $ 280 million C710 contract includes the White Hole Mountain Tunnel Tunnel and Station Tunnel as part of the Seattle MRT Central SkyTrain (22km long connecting Seattle to Cedar Airport). Crossing the North Hole two tunnels (each 1.3km long) using Japan’s Mitsubishi earth pressure balance shield excavation is now finished