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河流悬移质泥沙的输移方式按照水沙来源可以分为水沙同源与水沙异源两大类。黄河内蒙古段水沙来自不同的区域,冲泻质泥沙主要来源于陇西黄土高原区,而径流则主要来自唐乃亥以上的山区,呈现异源特性。通过分析内蒙古河段石嘴山与巴彦高勒水文站1951—2003年的水文数据,发现期间共发生了13次大流量和29次高含沙事件且大流量、高含沙量同时出现现象很少,多呈现大流量、低含沙量,或者小流量、高含沙量的态式。同时,通过改变传统流量-含沙量幂函数公式C_i=aQ~b(C_i为悬移质浓度,Q为流量)的参数项,建立了2种水沙异源情况下流量-含沙量的公式。
According to the sources of water and sediment, the transport modes of suspended sediment in rivers can be divided into two major categories: water and sediment homogeneity and water and sediment heterogeneity. The water and sediment from the Inner Mongolia section of the Yellow River come from different regions. The diagetic sediment mainly comes from the Loess Plateau in Longxi, while the runoff mainly comes from the mountain above Tangnaihai, showing heterogeneous characteristics. By analyzing the hydrological data of Shizuishan and Bayan-Göhle hydrological stations in Inner Mongolia from 1951 to 2003, 13 large-flow and 29 high-sediment-sediment events were found during the period, and the occurrence of high flow rate and high sediment concentration were low at the same time , Mostly showing large flow, low sediment concentration, or low flow, high sediment concentration. At the same time, by changing the parameters of traditional flow-sediment concentration function C_i = aQ ~ b (C_i is the concentration of suspended matter and Q is the flow rate), two kinds of flow-sediment concentration formula.