Study on the Application of Drainage Model in Sponge City Reconstruction Evaluation
The construction of sponge city is a new type of urban construction mode.This study takes the sponge city construction pilot area of a certain city as the study area.Based on the regional basic geophysical data and other relevant information,a comprehensive drainage system model is established to achieve simulation of hydrological and hydraulic and the relevant water quality indicators.To ensure the accuracy of the model,the relevant parameters of the model were cali-brated and validated based on the obtained monitoring data.Under the premise that the Nash efficiency coefficients are both greater than 0.5,the regional runoff control level and non-point source pollution control level were simulated and e-valuated.The results show that in terms of runoff control,the simulation result of the total annual runoff control rate is 79%;In terms of non-point source pollution control,the simulation result of the total reduction rate of pollutant SS load is 80%.Therefore,the construction effect of sponge city can meet the planning requirements.
万方数据
维普
