在黄浦江底2条圆隧道间首次设置长距离连接通道,并采用水平冻结土体暗挖施工方法;两岸暗埋段为2孔1管廊形式,采用地下连续墙围护和明挖法施工。工程在28个月建成通车,创黄浦江大型越江隧道施工最快记录。 For the first time, long-distance connecting channels were set up between the two circular tunnels at the bottom of the Huangpu River and the method of horizontal frozen soil excavation was adopted. The two buried sections of the two sides are in the form of two holes and one pipe gallery. . The project was completed and opened to traffic in 28 months, creating a record for the construction of large-scale cross-river tunnels in Huangpu River.