摘要
北方地区降水量受季节影响,丰枯期水量悬殊,河道设计既要考虑生态安全,又要满足防洪要求,因此河道设计大都采用复式断面,在枯水期主河道可满足枯季流量过水需求,在洪水期复式河道漫滩可保证行洪要求。在枯水期,河道漫滩可用于生态绿化或临时性用地。通过对北方地区河道设计分析,河道平面形态主要由岸线、堤线、绿道及蓝线4个部分构成。从生态和防洪两个方面论述北方地区城市河道规划设计的方法,并对河道生态河道功能进行评价,可为城市生态防洪河道设计提供参考。
In the northern area,the rainfall influences by the seasons,disparity of water quantify is wide between high flow period and dry period,river design not only should consider ecological safety,and to satisfy the design requirements,so river flood mostly adopts the double entry section in water,it can satisfy flow water demand of withered peniod,and the double entry river floodplains can ensure flood requirements in high flow period.In water withered period,river floodplains can be used for ecological afforestation or temporary land.Through analysis of the north district river design,plane morphology mainly by the river shoreline,weak bank,green road and the blue line four parts.In northern region,the methods of the urban river planning and design from two aspects of ecological and flood control,evaluating the ecological river channel function for flood control,providing reference of urban ecological river design.
出处
《水科学与工程技术》
2011年第3期50-53,共4页
Water Sciences and Engineering Technology
关键词
城市防洪
生态建设
河道防洪规划
北方地区
urban flood
ecological construction
river flood control planning
northern region
