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甬江水底隧道位于宁波市东侧,北起镇海,南至北仑港,该隧道建成后将成为联结甬江两岸的重要交通干线。 甬江水底隧道江中段采用沉管法施工,分5节预制管段沉放,主体结构由江中段沉放管段、北竖井、北引道和南引道等几部分组成,隧道全长1019m,其中北引道360m,北竖井15m,沉放管段420m,南引道224m。隧道纵坡±0.5％～±3.5％,隧道内净宽度
The Yongjiang water tunnel is located on the east side of Ningbo City, north of Zhenhai and Beilun Port in the south. When completed, the tunnel will become an important traffic artery linking the two sides of the Yongjiang River. The middle section of the Yongjiang Water Tunnel is constructed by immersed pipe method and is subdivided into 5 sections of precast pipe sections. The main structure consists of the pipe sinking section, the north shaft, the north guideway and the south guideway in the middle section of the river. The total length of the tunnel is 1019m, Road 360m, North vertical shaft 15m, sinking and drainage section 420m, South Road 224m. Tunnel longitudinal slope ± 0.5% ± ± 3.5%, the tunnel width of the net