多级闸门调控下徒骇河流域雨洪演进模拟与分析
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摘要
在多级闸门调控条件下,利用一维水动力模型软件Mike11软件建立了降雨径流和水动力耦合模型,设计了闸门全开、水位控制、水位差控制3种调控模式;对不同典型年下雨洪演进过程进行模拟,得到河道沿程水位流量变化趋势。结果表明:模型典型断面的模拟结果较好,各参数率定值可靠且可以基本反映雨洪演进过程,上、中、下游河床糙率率定值分别为0.029、0.033、0.035;水流状况受人工调控明显,主要表现在洪峰流量大小、洪峰出现时间以及闸前最高水位的变化上。
To simulate the rain-flood routing process combined with multi-stage sluices,software Mike11 was used to build a coupling model of rainfall-runoff and hydrodynamics. Three calculation modes of sluices including fully open,water level control and water level difference control were designed. The simulation of the rain-flood routing process during different typical years was carried out,and the change trend of water level and flow along river was obtained. The results show that the simulating results for typical cross sections have a good agreement with the measurement results,then the value of each parameter is reliable and can basically reflect the flood routing process. The flow state is obviously affected by artificial regulation,which is mainly reflected on the flow of flood peak,the occurrence time of flood peak and the highest water level of the gates.
To simulate the rain-flood routing process combined with multi-stage sluices,software Mike11 was used to build a coupling model of rainfall-runoff and hydrodynamics. Three calculation modes of sluices including fully open,water level control and water level difference control were designed. The simulation of the rain-flood routing process during different typical years was carried out,and the change trend of water level and flow along river was obtained. The results show that the simulating results for typical cross sections have a good agreement with the measurement results,then the value of each parameter is reliable and can basically reflect the flood routing process. The flow state is obviously affected by artificial regulation,which is mainly reflected on the flow of flood peak,the occurrence time of flood peak and the highest water level of the gates.
引文
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[2]朱德军,陈永灿,刘昭伟.大型复杂河网一维动态水流-水质数值模型[J].水力发电学报,2012,31(3):83-87.
[3]陈学群,李福林,张瑞青,等.黄河河口平原多闸坝河道水流数学模型[J].水资源保护,2012,28(1):38-41.
[4]曹永强,倪广恒,胡和平,等.优化调度理论与技术在洪水资源利用中的应用[J].水力发电学报,2005,24(5):17-21.
[5]SADEGH D,ABBAS P.Numerical modeling of flow pattern in dam spillway’s guide wall:case study:Balaroud dam,Iran[J].Alexandria Engineering Journal,2016,55(1):467-473.
[6]左其亭,刘子辉,窦明,等.闸门对河流水质水量影响评估及调控能力识别研究框架[J].南水北调与水利科技,2011,9(2):18-21.
[7]Danish Hydraulic Institute(DHI).Mike11:a modeling system for rivers and channels reference manual[R].DHI,2005.
[8]李亚平,陈友媛,胡广鑫,等.基于分布式水文模型的徒骇河河流生态需水量预测研究[J].环境科学学报,2013,33(9):2619-2625.
[9]杨洵,梁国华,周惠成.基于Mike11的太子河观——葠河段水文水动力模型研究[J].水电能源科学,2010,28(11):84-87.
[10]林波,刘琪璟,尚鹤,等.Mike11/NAM模型在挠力河流域的应用[J].北京林业大学学报,2014,36(5):99-108.