摘要
利用River2D软件模拟了大连市大沙河多孔栖息单元式生态护岸修建后的水流状况和鱼类栖息地条件。为了选定护岸铺设的位置,以便达到最佳的河流恢复效果,把护岸铺设分为4种方案:方案一维持原貌,不铺设护岸;方案二在整个河段沿岸修建护岸;方案三在需要保护的地方修建河流护底;方案四护岸与护底同时修筑。对比了4种方案下鲤鱼流速适宜指数和河段权重可利用面积,指出了在不同流量下的护岸最佳铺设方式。结果表明利用软件进行数值模拟的方法可以弥补室内实验方法和实地观测方法的不足。
The state of water flow and fish habitat after the construction of new interstitial unit ecological riverbank along Dasba River was simulated by use of River2D software. The effect of ecological riverbank was evaluated by calculation and comparison of the velocity suitability index of eyprinoid and weighted usable area （WUA） in 4 plans, i.e. without construction of ecological riverbank, construction of ecological riverbank, construction of streambed protection, and construction of ecological riverbank and streambed protection simultaneously, and the optimum riverbank construction mode at different flow discharge was worked out. The result of study shows that the numerical simulation method by using software can remedy the defects of laboratory experiments and field observation.
出处
《水利水电科技进展》
CSCD
北大核心
2007年第4期23-26,共4页
Advances in Science and Technology of Water Resources
基金
国家高技术研究发展计划(863计划)(2003AA601050)
关键词
生态护岸
数值模拟
River2D软件
大沙河
ecological riverbank protection
numerical simulation
River2D software
Dasha River
