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在全面分析塔里木河干流河道来水来沙特性及遥感地形资料的基础上,对干流河道的河床演变、输水输沙特性与河道冲淤等进行了系统的研究,提出了干流河道河型及划分标准、河道稳定性指标、断面水力几何形态及近期河势摆动范围等,建立了干流河道的挟沙能力公式,揭示了塔里木河干流河床演变的基本规律;通过深入分析干流河道的断面形态与输水输沙特征,考虑干流河道基础资料短缺和水量损失(洪水漫溢、引水跑水、渗漏蒸发)严重的特点,建立了适用于干流河道不同形态(枯水、平滩、漫滩)河槽的输水输沙计算模式,开发了干流河道一维泥沙数学模型,论述了干流河道的冲淤特点。
On the basis of comprehensively analyzing the characteristics of incoming and outgoing water and sediment in the mainstream of the Tarim River and the terrain data of the remote sensing, the river bed evolution, the characteristics of water and sediment transport and the scouring and silting of the mainstream are systematically studied. The formula of sediment carrying capacity of main stream is established, which divides the standard, the index of river stability, the hydraulic geometry of section and the range of swing of recent river. The basic law of riverbed evolution in the mainstream of Tarim River is revealed. By in-depth analysis of the cross- According to the characteristics of water conveyance and sediment transport, taking into account the serious shortage of basic data and water loss (overflowing flooding, diversion runoff, seepage evaporation) of the mainstream of the mainstream, a series of models are established for different types of channels (dry, flat, floodplain) The model of water and sediment transport is developed, and one-dimensional sediment mathematical model of the mainstream is developed. The characteristics of erosion and deposition of the mainstream are discussed.