浙江省宁波市地处浙东滨海,岸线曲折,港湾纵深,全市海岸线长达800余km。围海造地是缓和人多地少矛盾的主要途径,滨海地区又缺少淡水,为了满足农田灌溉、工业和生活用水的需要,在海湾或河流出海口筑坝拦堵,既不淹田、不移民,又可阻咸蓄淡,内围增加土地,还可缩短海塘防潮战线,可谓一举多得。 从50年代开始,宁波市兴建了车岙港、毛屿港、大塘港及胡陈港等堵港工程,同时在沿海修建海堤长达324km,这些工程都修建在软土地基上.胡陈港堵港坝基采用砂垫层处理,一次堵港成功,效果很好。 Ningbo City, Zhejiang Province is located in eastern Zhejiang coast, winding twists and turns, deep harbor, the city’s coastline up to 800 km. Land reclamation is the main way to ease the contradiction between population and land. There is a lack of fresh water in coastal areas. To meet the needs of farmland irrigation, industrial and domestic water supply, damming and blocking at the bay or river estuary are neither flooded nor immigrants , But also prevent salt storage, interior to increase the land, but also to shorten the seawall moisture front can be described as one stroke. Since the 1950s, Ningbo has built blocking port projects such as Chebei Port, Mao Yau Port, Datang Port and Hu Chen Port, and built a sea wall of up to 324 km along the coast, all of which are built on soft ground. The dam blockage of Chengang Port is treated with sand cushion, and once the port blocking is successful, the effect is very good.