长江口横沙附近河势变化与可利用港航资源分析

发布时间：2019-06-02 02:32

【摘要】：以1998/1999年长江流域洪水后奠定的河口河势为参照,利用四期大比例尺海图,数字化分析了1998/1999~2011年长江口北港河势与横沙东滩演变,讨论了北港和横沙东滩受河口重大工程影响产生的新变化。结果表明:青草沙水库工程稳定了北港河势;依托深水航道导堤工程和圈围工程,横沙东滩快速淤长,至2011年,-2m、-5m以上面积分别达到304km2、522km2,扣除深水航道坝田区面积,还有237km2、450km2;围绕横沙岛和横沙东滩,北岸可利用-10m岸线达到16km,在未来的7~23a,可为上海的发展提供大量的新增岸线资源和土地资源。横沙北靠北港,南依长江口深水航道,东临东海;吹填成陆的横沙东滩土地资源丰富,经济地理位置优越,使得在横沙建设上海新港区成为可能。
[Abstract]:Based on the estuary river regime laid after the flood in the Yangtze River Basin from 1998 to 1999, the evolution of Beigang River regime and Hengsha East Beach in the Changjiang Estuary from 1998 to 2011 was analyzed digitally by using four large scale charts. The new changes of Beigang and Hengsha East Beach affected by estuary projects are discussed. The results show that the Qingcaosha Reservoir Project has stabilized the Beigang River regime. Relying on the deep water channel dike diversion project and encirclement project, Hengsha Dongtan rapid silting length, to 2011, more than 5m area of 304km2522km2, excluding the area of deep water channel dam field, there are 237km2450km2; Around Hengsha Island and Hengsha East Beach, the-10m shoreline can be used on the north bank to reach 16km. in the future, it can provide a large number of new shoreline resources and land resources for the development of Shanghai. Hengsha north is located in the north port, south according to the Yangtze Estuary deep water channel, east facing the East China Sea. The land resources of Hengsha Dongtan, which is filled with land, are rich and the economic geographical position is superior, which makes it possible to construct Shanghai Xingang area in Hengsha.
【作者单位】：华东师范大学河口海岸学国家重点实验室;
【基金】：上海市科学技术委员会重大项目(11dz1204900)
【分类号】：U612

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