黄河三角洲河道沉积规律研究Ⅰ.建林边滩的形成与演化

Sedimentation of River Channel in the Yellow River Delta Ⅰ Formation and Development of the Jianlin Sediment Bar

通过对建林边滩形态、沉积物的实地调查 ,查明了建林边滩的形态及沉积物分布特征 ,从河流沉积动力学角度探讨了边滩的形成与演化。建林边滩发育呈“二元结构”,沉积物下粗上细 ,侧向地质作用与垂向地质作用是塑造边滩的根本动力。

Based on the field investigation of the morphic and sediment of the Jianlin Sediment Bar, We find that the Jianlin Sediment Bar was formed in the recent 22 years. It is composed of two layers, the upper layer is mainly composed of coarse silt, the lower layer is mainly composed of fine silt and mud silt. The formation and development of the bar is discussed with river sedimentary dynamical theory in this paper. The lateral geological process and the perpendicular geological process were the fundamental forces in the formation and development of the Jianlin Sediment Bar.