平原河网区域来水组成原理  

The Principle of Flat River Network Fraction

作　　者：朱琰[1] 陈方[1] 程文辉[1] 

机构地区：[1]河海大学水资源环境学院,江苏南京210098

出　　处：《水文》2003年第2期21-24,共4页Journal of China Hydrology

摘　　要：对于一般树状分布河网,上一级河道总是汇入至下一级河道,位于河道下游断面的流量总是由其上游汇集而至。但对于平原河网地区,特别是人工控制建筑物众多,又受潮汐影响的地区(如太湖流域),河网错综复杂,水流方向不定,要跟踪某个断面的水流去向,或某个河段的水体、断面流量是从哪里汇集而来的,非常困难。但这样的问题在生产实践中往往对其很感兴趣。例如从常熟枢纽引长江水流进入望虞河后,流向何处?河网各断面流量中或各河段水体中常熟枢纽引江水量占多少比重?对这些问题的研究可以估计常熟枢纽引江的效果和影响范围。因此,平原河网区域来水组成方法在生产实践中具有重要意义。重点介绍了平原河网区域来水组成原理及其在太湖流域的应用。For general tree-distributed river network,the flow at the upper stream is always flowed to the lower stream.The flow at the down section is always converged from the upper reach section.However,in the area of high dense flat river network,especially,in the area with a lot of man-made controlling hydraulic engineering structures and the influence of tidal flow(such as Taihu Basin),it is very difficult to determine where the water or section flow converges from,because of its uncertain flow direction.It will be very interested in practical ends about such problems.For example,as diverted water from Yangtze River to Wangyuhe River by Changshu hydraulic engineering junction,where does the water flow to and how much diversion water in the each section of river network fraction or each reach is diverted from Changshu junction?There is significant sense in practical ends on flat river network fraction simulation method.This paper mainly introduces the flat river network fraction method and its implement in Taihu Basin.

关 键 词：平原河网 水量模型 来水组成 保守物质 

分 类 号：TV133[水利工程—水力学及河流动力学]