黄河山东段悬移质含沙量场的建立与分析

Analysis on the Establishment of Suspended Sediment Concentration Field in the Shandong Section of the Yellow River

摘要:

黃河下游山东河段的悬移质含沙量分布规律较为复杂,对泥沙测验造成较大困难。选取孙口水文站、利津水文站作为黄河山东段宽浅型河段和窄深型河段的代表性水文站,基于各水文站的悬移质泥沙测验长系列历史资料,采用三次样条插值方法建立测站测验断面悬移质含沙量场,运用 mesh 函数绘制含沙量场三维分布图,基于含沙量场物理意义推求测线含沙量计算公式,直观、准确地分析各测次测验断面含沙量分布规律,为黄河山东段悬移质泥沙测验方式优化提供水文基础理论支撑。

Abstract:

The distribution law of suspended sediment concentration in the Shandong section of the lower reach of Yellow River is relatively complex, causing great difficulties for sediment measurement. Taking the Sunkou and Lijin Hydrological Stations as representative for wide-shallow and narrow-deep river sections separately in the Shandong section of the Yellow River, this paper establishes a suspended sediment concentration field for the station's measurement section. Using the cubic spline interpolation method based on the long-series historical data of suspended sediment measurement at each hydrological station, it draws a three-dimensional distribution map of the sediment concentration field using the mesh function, and derives a calculation formula for the sediment concentration of the measurement line based on the physical meaning of the sediment concentration field. It analyzes the distribution law of sediment concentration in each measurement section intuitively and accurately, providing a hydrological theoretical basis for optimizing the suspended sediment measurement methods in the Shandong section of the Yellow River.