退垸还湖防洪效应影响因素研究  

Research on the Influence Factor on Flood Control Caused by Retreating the Flood Storage

作　　者：袁超[1] 刘美琪[2] 马斌强[1] 李聪[1] 陈建[3] 

机构地区：[1]河南农业大学理学院,郑州450002 [2]安阳广播电视大学,安阳455000 [3]华北水利水电学院,郑州450011

出　　处：《科学技术与工程》2009年第10期2808-2811,2816,共5页Science Technology and Engineering

摘　　要：退垸还湖是降低防洪压力的重要措施,不同的平退方式对防洪的影响是不同的。运用一维非恒定流数学模型研究概化河道及蓄滞洪区中退垸还湖对附近河道的防洪影响,总结退垸还湖对河道防洪影响的规律及退垸还湖时需要注意的问题,为退垸还湖的实际推行提供参考。结果表明,退垸还湖可以有效的起到蓄洪滞洪的作用,其中单退方式对控制站的水位降低作用比双退方式更为明显。单退情况下,防洪效应受到口门开启时间的影响,采用合理的调度方式,可以更加充分发挥垸区的蓄洪削峰作用。相比较而言,距离平退垸区比较近的水位站点受到的影响更大;上游与下游相比较,同样距离情况下,上游站点受到的影响相对大一些。因此,在退垸还湖过程中要充分考虑平退垸区及保护区域的相对位置、平退方式及垸区的调度方式等多方面因素。The shrinkage of water area affects the ecological balance and the flood control badly, this not only threats the living of animals and plants, but also impairs the regulating ability of the lake and brings more pressure on flood control. Retreating the flood storage is necessary. For a long time, study of retreating the flood storage is focused on the flood control in the given regions, and the study about general principles is little. With one-dimen- sional unsteady flow mathematical model, the influence factor on the flood control along the river caused by retreating the flood storage is researched and the laws about the flood control caused by retreating the flood storage are summed up. A conclusion is drawn that retreating the flood storage is very important to store floodwater and flood detention, single retreat is more effective than double retreat to the flood control. Under single retreat, the flood control is affected by the time to open floodgate, and the operation regulation. The station nearer the flood storage affected more than that downstream. Many factors such effect of storing floodwater is more obvious with reasonably is affected more than that far, and the station upstream is as relative position, mode of retreating and the operation regulation should be considered.

关 键 词：退田还湖 防洪效应 影响因素 

分 类 号：TV122[水利工程—水文学及水资源]