基于DELFT3D HM模型的苍海湿地公园洪水淹没模拟研究
|
摘要
洪水淹没情景受区域洪水流量、河床地形变化、河道工程运行调度等多因素影响,对于洪灾情景的确定,是开展河道与滩区治理研究以及进行防洪设计和滩区功能定位的前提条件。为此,以苍海湿地公园区域为例,利用Delft3D HM模型建立起二维洪水演进模型,进而模拟洪水淹没过程。模型采用P=20 a一遇洪水历史资料进行验证,结果合理;采用P=50 a一遇洪水对苍海湿地公园流域内洪水淹没过程进行了模拟,得到了实时淹没范围、最大淹没区域、水位变化过程等洪涝区内的特征水力要素信息。成果为该区域内的防洪规划和实时洪水预报提供理论参考,同样为后期洪涝区内水质提升工程提供可靠参数。
Flood submergence scenario is affected by many factors such as flood discharge in the area,change of riverbed topography change and operation schedule of channel projects. The determination of flood scenario is a precondition for carrying out research on river and beach area management,as well as flood control design and beach area positioning function. In view of this,a two-dimensional flood evolution model is established by using the Delft3D Hydrodynamic model to simulate the flood submergence process in Canghai Wetland Park as a case study.The model is verified by historical data of 20-year flood and the results were reasonable. The flood routing process in Canghai Wetland Park encountering 50-year flood is simulated,and the characteristic hydraulic factors such as flooded area,maximum submerged area,and water level change process are obtained. The research achievements provide a theoretical reference for flood control planning and real-time flood forecasting in the area and offer reliable parameters for water quality improvement projects in the flood area.
Flood submergence scenario is affected by many factors such as flood discharge in the area,change of riverbed topography change and operation schedule of channel projects. The determination of flood scenario is a precondition for carrying out research on river and beach area management,as well as flood control design and beach area positioning function. In view of this,a two-dimensional flood evolution model is established by using the Delft3D Hydrodynamic model to simulate the flood submergence process in Canghai Wetland Park as a case study.The model is verified by historical data of 20-year flood and the results were reasonable. The flood routing process in Canghai Wetland Park encountering 50-year flood is simulated,and the characteristic hydraulic factors such as flooded area,maximum submerged area,and water level change process are obtained. The research achievements provide a theoretical reference for flood control planning and real-time flood forecasting in the area and offer reliable parameters for water quality improvement projects in the flood area.
引文
[1]袁艳斌,王乘,杜迎泽,等.洪水演进模拟仿真系统研制的技术和目标分析[J].水电能源科学,2001,19(3):30-33.
[2]胡四一,施勇,王银堂,等.长江中下游河湖洪水演进的数值模拟[J].水科学进展,2002,13(3):278-286.
[3]李大鸣,林毅,徐亚男,等.河道、滞洪区洪水演进数学模型[J].天津大学学报(自然科学与工程技术版),2009,42(1):47-55.
[4]李大鸣,林毅,周志华,等.蓄滞洪区洪水演进一、二维数值仿真及其在洼淀联合调度中的应用[J].中国工程科学,2010,12(3):82-88.
[5]张细兵,欧治华,崔占峰,等.基于非结构网格的分蓄洪区水沙演进数学模型研究[J].长江科学院院报,2011,28(4):75-79.
[6]何典灿,周建中,江炎生,等.基于MIKE的杜家台洪道行洪能力研究[J].长江科学院院报,2017,34(9):52-56.
[7]段扬,廖卫红,杨倩,等.基于EFDC模型的蓄滞洪区洪水演进数值模拟[J].南水北调与水利科技,2014,12(5):160-165.
[8]Deltares.Delft 3D-Flow User Manual—Simulation of Multi-dimensional Hydrodynamic Flows and Transport Phenomena[M].The Netherlands:Deltares,2009.
[9]王震.梧州苍海城市湿地公园石狮河湿地规划[D].长沙:中南林业科技大学,2015.
[10]谢谦城,苗伟波,戴文鸿,等.水沙变化条件下黄河下游连续弯段水流特性研究[J].水资源与水工程学报,2016,27(4):157-161.
[2]胡四一,施勇,王银堂,等.长江中下游河湖洪水演进的数值模拟[J].水科学进展,2002,13(3):278-286.
[3]李大鸣,林毅,徐亚男,等.河道、滞洪区洪水演进数学模型[J].天津大学学报(自然科学与工程技术版),2009,42(1):47-55.
[4]李大鸣,林毅,周志华,等.蓄滞洪区洪水演进一、二维数值仿真及其在洼淀联合调度中的应用[J].中国工程科学,2010,12(3):82-88.
[5]张细兵,欧治华,崔占峰,等.基于非结构网格的分蓄洪区水沙演进数学模型研究[J].长江科学院院报,2011,28(4):75-79.
[6]何典灿,周建中,江炎生,等.基于MIKE的杜家台洪道行洪能力研究[J].长江科学院院报,2017,34(9):52-56.
[7]段扬,廖卫红,杨倩,等.基于EFDC模型的蓄滞洪区洪水演进数值模拟[J].南水北调与水利科技,2014,12(5):160-165.
[8]Deltares.Delft 3D-Flow User Manual—Simulation of Multi-dimensional Hydrodynamic Flows and Transport Phenomena[M].The Netherlands:Deltares,2009.
[9]王震.梧州苍海城市湿地公园石狮河湿地规划[D].长沙:中南林业科技大学,2015.
[10]谢谦城,苗伟波,戴文鸿,等.水沙变化条件下黄河下游连续弯段水流特性研究[J].水资源与水工程学报,2016,27(4):157-161.