生态护坡河道的流态特征分析及水质模拟

Flow Pattern Characteristics Analysis and Water Quality Simulation of River with Ecological Concrete Revetment

采用"三面光"河道和生态混凝土护坡河道进行了对照试验。结果表明:生态混凝土护坡河道的坡面粗糙系数更大。在采用生态混凝土进行河流生态修复工程设计时,宜采用0.088以上的粗糙系数进行设计。生态护坡河道的生物生态型水质综合模型可对污染物特征因子NH_3-N和TP进行较好地模拟。采用不同的模拟参数,可对不同污染物的去除效果进行有效识别。

A contrasted experiment was conducted in two river models, which were respectively built by common concrete and ecological concrete. The experiment resuhs indicate that roughness coefficient of ecological concrete revetment is greater than that of hard revetment. When ecological concrete is adopted in the design of river ecological restoration project, the appropriate roughness coefficients for the design should be more than 0.088. The pollutant characteristic factors, such as NH3- N and TP, can be well simulated in the biological and ecological water quality comprehensive model of the river with ecological concrete revetment. Removal efficiencies for different pollutants can be effectively identified by using different simulation parameters.