摘要
MIKE21 FM模块是以非结构化网格为基础的平面二维水动力模型,可对河道地形、道路边界进行灵活概化,桥墩阻力采用亚网格技术处理,模拟结果能够较好地反映计算河段的流场、流速和水位等要素及桥梁周边的要素变化情况。根据大凌河入海口处地形地貌复杂、阻水边界不确定的特点,进行了多方案的水动力模拟计算,分析不同桥长方案下河道水位、流速的变化规律,为工程建设方案比选和防洪评价提供科学依据。
The MIKE21 FM module is two-dimensional hydrodynamic model based on unstructured grid,which can generalize river terrain and road flexible;pier resistance can be processed by sub grid technique. Simulation results can better reflect flow field,velocity,water level in calculated channel and the elements changes surrounding piers. According to the complex topographic features and the uncertain boundary of water resisting at the mouth of the Daling River,the hydrodynamic simulation calculation of multi schemes is carried out,and the variation law of the water level and velocity of the river under different bridge length is analyzed. The study result is a reliable scientific reference for engineering construction and flood control evaluation.
作者
张利
孟晓路
Zhang Li, Meng Xiaolu(Research Institute of Water Resources and Hydropower of Liaoning Province, Shenyang 110003)
出处
《中国防汛抗旱》
2018年第4期44-47,共4页
China Flood & Drought Management
关键词
MIKE21
FM模型
跨河桥梁
壅水
防洪评价
MIKE21 FM model
river-crossing bridge
Backwater
flood control evaluation
