摘要
通过采用平面二维有限元数学模型模拟计算乐清湾边滩围垦前后的潮流变化分布 ,在此基础上 ,预测围垦工程建设后导致泥沙冲淤变化。据此说明海湾围垦工程作用下的动力沉积响应。结果表明 ,海湾围垦工程对流场及泥沙冲淤的影响局限于工程区临近水域。在围区两侧 ,工程前后流速减小 ,使水流挟沙力降低 ,导致泥沙局部淤积 ;在围堤的转角外侧 ,将存在流速略有增大的区域 。
With a 2D finite element model, here simulated the distribution of the tidal current and the tidal waves before and after the reclamation on the tidal flat in Yueqing Bay in Zhejiang to discover the change in the tidal waves and the tidal current caused by the reclamation. Then, the resulted change in silt sedimentation by the reclamation was also forecasted. The simulated results illustrated that, on both sides of the reclaimed area, the current would be a little smaller after reclamation. Thus, the sediment\|carrying capacity of the flow would decrease, and some deposit phenomenon would appear there on the seabed. And in the area outside the corner of the dam, the current would become a little larger, however, there would not be obvious erosion occurred. In general, the response of dynamic sedimentation to the reclamation project in bays would be small, and be limited in the water area near the project.
出处
《环境污染与防治》
CAS
CSCD
北大核心
2004年第4期281-284,共4页
Environmental Pollution & Control
