不平衡输沙含沙量垂线分布理论研究展望  

Review and prospect of vertical distribution by non-equilibrium sediment concentration theory

作　　者：赵连军[1] 吴国英[1] 王嘉仪[1] 

机构地区：[1]黄河水利科学研究院,郑州450003

出　　处：《水力发电学报》2015年第4期63-69,共7页Journal of Hydroelectric Engineering

基　　金：国家自然科学基金项目(51379086);黄河水利科学研究院基本科研业务费专项项目(HKY-JBYW-2013-20)

摘　　要：河流中泥沙纵向输沙状态与垂线分布特性是相互依存的。不平衡输沙含沙量垂线分布规律是不平衡输沙理论的核心内容之一,该问题研究对推进河流泥沙学科的发展具有重要意义。目前对平衡状态下含沙量垂线分布规律研究成果较多,理论也较为成熟,而触及不平衡输沙含沙量垂线分布规律的成果很少。本文重点分析了韩其为关于不平衡输沙含沙量垂线分布的理论研究成果,认为其在公式建立中采用平均含沙量垂线平衡特定分布条件的做法值得商榷。同时提出,要想实现不平衡输沙含沙量垂线分布研究的突破,必须开展大量的水槽试验,并对试验测验要求进行了阐述。Relationship of longitudinal transport and vertical distribution of sediment in a river is the one of mutual interdependence. Vertical distribution law of concentration in non-equilibrium transport is a core subject of the theory and its in-depth study is of great significance to advancement in river sediment discipline. Recent theoretical studies on this subject are lacking, while a great number of correspinding results for equilibrium tranpsort including relatively mature theories were previously reported. This paper focuses on an analysis of Hanqiwei＇s theory about the sybject, and suggests that further discussion is needed on his assumption that the parameter of vertical average concentration distribution in equilibrium transport is applicable to derivation of the formula for non-equilibrium cases. We also suggest that it would be impossible to achieve a breakthrough in the vertical distribution law of sediment concentration in non-equilibrium transport until a great numbe of detailed flume tests are completed. And a demonstration of such tests is included.

关 键 词：河流泥沙工程学 不平衡输沙 含沙量 垂线分布 

分 类 号：TV143.6[水利工程—水力学及河流动力学]