头道沟流域是我国干旱区众多没有冰川融水补给河流中年径流量较大的河流,分析该流域的悬移质特征对我国干旱区众多没有冰川消融水补给的中小流域的水资源利用和水利建设具有普遍的意义。而影响泥沙的主要因素是地形、地貌、降水和洪水。根据20多年的实测资料,利用数理统计原理进行分析,发现这类区域悬移质泥沙的输移量可达多年均值的20多倍,这种特殊的悬移质泥沙运行特征,供从事水利勘测、设计工作者参考。 The Toudaogou watershed is a large number of middle-aged and long-run rivers with no glacial meltwater recharge in the arid region of China. The analysis of the characteristics of the suspended sediment in the arid region is of great significance to the utilization of water resources in many small and medium-sized watersheds without aridification of glacial meltwater in the arid region of China. Water conservancy construction has universal significance. The main factors that affect sediment are topography, topography, precipitation and floods. Based on the measured data of more than 20 years and using the principles of mathematical statistics, it is found that the amount of suspended sediment transport in such areas can reach more than 20 times of the annual average value. This special suspended sediment transport characteristics Water survey, design workers reference.