地理学报 ›› 1988, Vol. 55 ›› Issue (4): 299-310.doi: 10.11821/xb198804002

• 论文 • 上一篇    下一篇

黄河海港动力地貌条件的初步探讨

耿秀山, 吴世迎   

  1. 国家海洋局第一海洋研究所
  • 出版日期:1988-10-15 发布日期:1988-10-15

PRELIMINARY APPROACH TO THE DYNAMICAL GEOMORP-HICAL CONDITIONS OF HUANGHE SEAPORT

Geng Xiushan, Wu Shiying   

  1. First Institute of Oceanography, SOA, Qingdao
  • Online:1988-10-15 Published:1988-10-15

摘要: 在黄河海港选址及未来预测中,作者通过海岸动力、悬沙分布、粒度特征、地形对比研究法等分析,获得了黄河口迁离黄河海港附近8年后的海底蚀淤厚度、侵蚀与淤积速率、净余侵蚀总重量、泥沙活动带的活动规律与海岸剖面塑造及其演变的关系,从而为黄河海港的设置与工程布局提供了科学依据。

关键词: 黄河海港, 无潮区地形对比研究法, 蚀淤厚度, 侵蚀与淤积速率, 泥沙活动带

Abstract: Huanghe Seaport is located at the mouth of the Diaokou River, the 1976-abandoned mouth of the Yellow River. The mouth of the Diaokou River is the most seaward protruding part of the coastine of modern Yellow River Delta As a result, the intense erosion of the NE-orient-ed waves nearly perpendicular to the shoreline and the scouring of the high-speed flood-ebb tidal currents parallel with the shoreline and the rotaing stationary tidal wave in the tidefree area have changed the depositional environment of the surrounding sea area of Huanghe Seaport (into erosional environment since the abandonment of the Diaokou River Mouth by the Yellow River, thus providing scientific theoretical premise for the setting up of Huanghe Seaport.However, building a seaport off the mouth of the Yellow River through which 10.6X10* tons sediment is emptied into the sea each year, the sediment silting is a very difficult problem to solve, especially in case that the surplus flow from the surrounding of the present Yellow River Mouth is directed toward the seaport area. As a results, in selecting seaport site and estimating its dynamical geomorphic conditions, we considered that the traditional hydrologic and supended sediment movement surveys couldn’t satisfy the requirements for exactly fixing the positions of the axis of the leading dyke and the piers. So we applied the topographic contrast research method in this study. Through quantitative calculation and large-scale diagram illustrations with serious mathematic control, we have obtained the sea-floor erosion-deposition thickness, erosion-deposition velocity, net sediment transportation amount and direction, made clear the relationship between the formation of the sand movement zones and the development of the coastal profiles and the influence of the evolution of the coastal profiles on the future dynamic geomorphologic conditions of coast and the sea area surrounding the seaport, and proposed appropriate prevention measures, thus providing a scientific basis for the site selection and the overall engineering arrangement oSeaport.

Key words: Huanghe seport, Tidefree area, Topographic contrast research method, Erosion-deposition thickness, Erosion-depesitionn velocity, Sand movement zone