Design of Water Supply Plant Based on the Concept of Low Impact Development
In order to deal with the water safety problems caused by the change of runoff of rain water,taking a water supply plant in Hefei as an example,the possibility of using low impact development technology to regulate runoff was discussed,and a hydrological model based on SWMM was established to check the regulation effect.The results show that four kinds of LID measures,including decentralized layout of concave green space,rain water garden,green roof,permeable paving,in the 5-year return period,resulted in the average reduction rate of surface runoff to 61.95%,the average surface infiltration rate increased by 36.90%,the flood peak discharge decreased by 73.59%,and the node water accumulation decreased by 79.74%.The annual total runoff control rate reached 77.27%,2.27%higher than the target annual run-off control rate,reducing the risk of waterlogging in the plant area and providing a certain guarantee for production safety.
low impact developmentwater supply planttotal annual runoff control ratestorm water management model(SWMM)
万方数据
维普
