塘沽新港泥沙来源的研究

塘沽新港泥沙来源的研究，不仅对防止或减少新港淤积具有实际意义，而且对港口整治和建筑物布置也具有一定的关系。 目前，关于塘沽新港泥沙来源问题，有两种看法。其一，根据水动力学研究的结果，认为泥沙来源于黄河；其二，则根据沉积物的物质成分特征、分布规律以及入海泥沙的分异作用，并结合海洋水文动力特点与浅滩动态特征，首先明确地提出了：泥沙来源于海河。最近南京大学地理系海岸研究组，以海河水下三角洲的演变和渤海湾沿岸地貌沉积特征为依据，也认为泥沙是来源于海河。 本文根据沉积物的粒度成分、重矿物与粘土矿物成分和化学成分等分析，探讨了关于塘沽新港泥沙来源问题。

STUDY ON THE SOURCE OF MUD-SAND IN THE PORT OF TANGGU

Surface sediments were analyzed for mineralogical composition, grain size and chemical content, from these data, it is possible to draw the following conclusions. The primary source of both the coarse sediments (> 0.01mm) and the fine sediments (< 0.01mm) is the Hai He (Hai River). The influence of Hai He on the settlement of mud-sands in the Port of Tanggu is as follows: mud-sands discharged from the Hai He move southward and mix with those discharged from the Huang He (Yellow River) to form a mud-shoal, some of them, however, move northward to meet with those discharged from Luan He (Luanho River) to accumulate there. Some of those mud-sands, under the flow action of the Hai He, move toward the sea to reach at a depth of 15m, approximately 20km from the present shoreline. The formation of huge mud-shoal off the New port is the direct action of the mud-sands discharged from the Hai He.