不平衡输沙含沙量垂线分布公式研究  

Non-equilibrium vertical distribution formula of suspended sediment concentration

作　　者：马子普 郭庆超[1,2] 关见朝 乐茂华[1,2] MA Zi-pu;GUO Qing-chao;GUAN Jian-zhao;LE Mao-hua(State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin,Beijing 100038,China;China Institute of Water Resources and Hydropower Research,Beijing 100038,China;Yellou River Instilute of Hydraulic Research,YRCC,Zhengzhou 450003,China)

机构地区：[1]流域水循环模拟与调控国家重点实验室,北京100038 [2]中国水利水电科学研究院,北京100038 [3]黄河水利委员会黄河水利科学研究院,河南郑州450003

出　　处：《泥沙研究》2022年第3期1-8,共8页Journal of Sediment Research

基　　金：国家重点研发计划项目(2018YFC1508405);国家自然科学基金青年项目(52009145,42041004);中央级公益性科研院所基本科研业务费专项(HKY-JBYW-2019-11)。

摘　　要：不平衡输沙过程伴随着含沙量垂线分布的调整,韩其为较早提出了不平衡输沙含沙量垂线分布公式,但由于引入了三个未知参数,使公式的应用受到较大限制。通过数学变换简化了其公式,使未知参数由三个减少为两个,并探讨了所得公式的适用范围,含沙量均匀分布的条件,各因素对含沙量垂线分布曲线形态的影响。提出了检验不平衡输沙含沙量垂线分布公式合理性的方法,分别从定性和定量两个角度进行了检验。The vertical profiles of suspended sediment concentration are usually adjusted in the non-equilibrium sediment transport process. The non-equilibrium vertical distribution formulas of sediment concentration were proposed by Han earlier. However, three unknown parameters were introduced and the practicability were limited. The formula was simplified by mathematical transformation, and the unknown parameters were reduced from three to two. The applicability range of the formula, the conditions for uniform distribution of sediment concentration, and the influences of various factors on the shape of vertical distribution curve were discussed. The methods to test the rationality of the non-equilibrium vertical distribution formula were put forward, and then the formula was tested from qualitative and quantitative respectively.

关 键 词：不平衡输沙 含沙量 垂线分布 均匀分布 含沙量饱和度 非饱和度参数 

分 类 号：TV142.3[水利工程—水力学及河流动力学]