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在杭州湾交通通道预可行性研究阶段的《通航标准论证报告》及杭州湾交通通道有关专题研究成果的基础上,依据浙江省交通厅文件的精神,结合杭州湾的水文、河势、港口、航道等基本状况、条件以及通航船舶现状与未来对通航发展的要求等,确定了杭州湾跨海大桥南航道的通航净空尺度和桥位航道中心线及通航孔的位置。在杭州湾南航道中心线设了3个通航孔,其中1个为主通航孔,2个为副通航孔。主通航孔可通行总长为97m,宽为14m的3000t级杂货船,净空高度不于31m,净空宽度不小于125m,单向通航;副通航孔可通行总长小于33m,宽为7.2m的小型船舶,净空高度不小于20m,净空宽度不小于50m,单向通航。最高通航水位为5.19m。
Based on the “Navigational Standards Verification Report” of pre-feasibility study of Hangzhou Bay traffic corridor and the related research results of Hangzhou Bay traffic corridor, based on the spirit of Zhejiang Provincial Communications Department’s document and combined with the hydrology, river potential, Waterway and other basic conditions and conditions as well as the status quo of navigation vessels and the future requirements for the development of navigation and so on, determines the navigable clearance of the south channel of the Hangzhou Bay Bridge and the location of the navigation centerline and navigable hole. There are 3 navigational ports in the center of Hangzhou Bay navigation channel, of which 1 is the main navigational port and 2 are vice navigable ports. The main navigable port can access a 3000t general cargo ship with a total length of 97m and a width of 14m. The clearance height is not less than 31m and the clearance width is not less than 125m in one-way navigation. The auxiliary navigable port can access small ships of less than 33m in total length and 7.2m in width , Clearance height of not less than 20m, clearance width of not less than 50m, one-way navigation. The highest navigable water level is 5.19m.