摘要
文章针对大凌河锦州段河道冲淤损坏、天然河道污染严重的状况,利用MIKE21软件并根据该河道生态综合整治工程建立了基于非正交网格的二维水动力数值模型,对河流的水面曲线特征和纵向流速利用模型进行模拟并得出了河流河岸与河床边坡落淤和冲刷分布状况;然后基于流域土壤生物工程技术给出了不同的生态治理方案,并对各治理方案的生态效果利用鲤鱼流速适宜指数法进行评价。研究表明:第4种生态治理方案的流速呈现出均匀分布的特征,该方案具有显著的河流生态治理效果,在河流生态治理种生态丁坝发挥着关键性作用。
According to the state of river course damaged by scouring and silting,and situation of natural river course polluted seriously,the MIKE21 software was used to establish a two-dimensional water power value model with non orthogonal grids based on the ecological comprehensive regulation engineering of this river course in this paper,using the model to simulate the water surface curve characters and vertical velocity of the river,and obtained the silting state of river bank and river bed slope and the layout state of scouring; then based on the watershed soil organisms technology,to carry out different ecological regulation schemes and to evaluate the ecological effect of each regulation scheme with carp velocity suitability index method. The study shows that the flow velocity of No. 4 ecological regulation scheme is characterized as uniform distribution,this scheme has remarkable effect of river ecological regulation,and ecological groins take vital roles in regulating the river ecology.
作者
李慧
LI Hui(Linghe Protection Area Management Bureau of Liaohe River Liaoning Province,Shenyang 110000,China)
出处
《黑龙江水利科技》
2018年第11期13-16,共4页
Heilongjiang Hydraulic Science and Technology
关键词
数值模拟
生态治理
MIKE21软件
土壤生物
大凌河锦州段
value simulation
ecological regulation
MIKE21software
soil organisms
Jinzhou section of Daling river
