青岛市环胶州湾各河流输沙特征分析

通过对青岛市环胶州湾各河流上的水文站历年含沙量、输沙量资料分析计算,推求出各河流的入海输沙量,并对输沙特征进行分析评价,最后得出以下以下结论:(1)从空间分布来看,胶州湾河流输沙主要来自胶州湾西北部和东北部。(2)河流属中沙河流。河道上游多年平均含沙量和输沙模数均大于河道中下游。(3)输沙量年际变化较大,最大年输沙量是最小年输沙量的518.7倍,且年降水量较大时,年入海水量也较大,年输沙量也较大。(4)河流悬移质颗粒特征为河流从源头到河口,泥沙粒径是不断减小。

Analysis of Sediment Discharge Characteristics of Rivers in Jiaozhou Bay, Qingdao City

Sediments entering into the sea was calculated according to the analysis of the sediment concentration and sediment discharge at the hydrometry stations of the rivers in the Jiaozhou Bay, and the sediment discharge of the rivers was analyzed. The results show: (1) The sediment discharge of the rivers are mainly from the northwest and northeast of the Jiaozhou Bay; (2) The rivers belong to medium sand, and the sediment concentration and sediment discharge modulus of the upstream are more than those of the downstream; (3) The annual variation of sediment discharge is large and the maximum is 518.7 times of the minimum, the runoff entering into the sea and the sediment discharge become larger with the rainfall increasing; (4) The particle size of the sediments becomes smaller when it transports from the headstream to the estuary.