1　工程概况宁波站地处海积平原 ,地表为人工填土 ,地表以下为淤泥质粘土及淤泥质砂粘土 ,厚度大于 30 m,地下水发育 ,为孔隙潜水。另外宁波地区降雨量大 ,地表水丰富。宁波站既有东、西两旅客地道为从基本站台穿越 1、2道轨下通往 1 #中间站台 ,该次宁波站改扩建将地道穿越 3 1 Project Overview The Ningbo Station is located in the Haiji Plain, with artificial fill on the surface, muddy clay and silty sand clay below the surface, with a thickness of more than 30 m, groundwater development, and pore diving. In addition, Ningbo has large rainfall and abundant surface water. Ningbo Station has both East and West passenger tunnels passing from the basic platform through the No. 1 and No. 2 rails to the No. 1 intermediate platform. The Ningbo Station will be reconstructed and expanded to cross the tunnel. 3