摘要
基于南黄海海洋牧场人工鱼礁群投放后的实测地形和数值模拟等手段分析人工鱼礁体投放后对海域水动力的影响以及冲刷稳定后对局部海域水动力的响应。鱼礁投放后,受人工鱼礁群的阻水作用,鱼礁群西北侧、东南侧水域流速减小,且越靠近鱼礁群处,流速减幅越大,水域流速减幅在0.01~0.07 m/s,涨急影响范围约为鱼礁群西北侧11.4 km,落急影响范围约为东南侧15.1 km。人工鱼礁投放并达到稳定后,冲刷坑深度在0.5~1.5 m,冲刷坑范围在10~20 m,约为礁体范围的2倍。当鱼礁群附近地形不变时,鱼礁群东侧形成约4 km的长条带的流速减弱区,鱼礁群附近形成局部冲刷坑后,鱼礁群上下游水域流速增大,鱼礁群内部流速减弱。
Based on the measured topography and numerical simulation of artificial reefs in marine ranch of South Yellow Sea,the influence of artificial reefs on hydrodynamic force and the response to local hydrodynamic force after erosion stabilization were analyzed.After the reefs are put into operation,the flow velocity in the northwest and southeast of the reefs decrease for the water blocking effect of the artificial reefs,and the closer to the reefs,the greater the decrease of the flow velocity.The decrease range of the flow velocity is between 0.01 m/s and 0.07 m/s.The impact range of surge is about 11.4 km in the northwest of the artificial reefs and 15.1 km in the southeast.The depth of the scouring pit is between 0.5 m and 1.5 m while the artificial reefs stabilized,and the range of the scouring pit is between 10 m and 20 m which is about twice the range of the reefs.When the terrain near the artificial reefs remains unchanged,a 4 km long strip velocity weakening area is formed in the east of the artificial reefs.When a local scouring pit is formed near the artificial reefs,the velocity in the upstream and downstream waters of the artificial reefs increases and the velocity in the artificial reefs decreases.
作者
刘针
程永舟
路川藤
罗小峰
齐越
LIU Zhen;CHENG Yong-zhou;LU Chuan-teng;LUO Xiao-feng;QI Yue(School of Hydraulic Engineering, Changsha University of Technology, Changsha 410114, China;Tianjin Research Institute for Water Transport Engineering, National Engineering Laboratory for Port Hydraulic Construction Technology, Tianjin 300456, China;Hunan Provincial Key Laboratory of Water and Sediment Science and Water Disaster Prevention, Changsha 410114, China;State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering,Nanjing Hydraulic Research Institute,Nanjing 210029, China;Planning and Research Institute of the Ministry of Transport, Beijing 100028, China)
出处
《水道港口》
2021年第5期588-595,共8页
Journal of Waterway and Harbor
基金
国家自然科学基金项目(52101316)。
关键词
人工鱼礁
流场效应
局部冲刷
南黄海
artificial reef
flow field effect
local scour
the southern Huanghai Sea
