| LID and rainwater utilization engineering measures play an jmportant role in cuting the amount of flood peak flow,improving the rain water quality,replenishing groundwater,and so on.Research on comprehensive utilization of rainwater in engineering application is of great significance to improving water environment.First of all,experimentally analyzed and summarized the structure material,the routine parameters,the runoff reduction and pollutant removal performances,the engeering application of the three most commonly used used LID methods-green roofs,permeable pavement and green depression.And emphatically coducted experiments and analyzed data for green depression.In the aspect of hydrological experiments,made plant species,packing layer thicknesses,rainfall intensity as comparison factors,analyzed and summarized volume retention,effluent process and flood peak retention.For rainwater quality experiments,analyzed turbidity and researched the effect of other water quality indicators.Then systematically analyzed application of stormwater engeering from the rainwater collection and transfer,processing,storage,recycling,etc.Especially focus on the specific design method,the actual engineering construction and operation.Make arrangement,design,simulation,calculation for engineering facilities,such as roof and pavement stormwater collection system,transfer pipe and canal,the early tormwater runoff abandoned facility,filter,collection and recycling facilities.Finally,surveyed LID measures and rainwater utilization situation of the target area.Pointed out the stormwater management problems.Proposed an integrated scheme of stormwater utilization for the area.The scheme can be divided into rainwater runoff front control and end control technology.And made the project after the operation compled,including object,method and cycle for operation,management and maintenance.The project can guide the reconstruction and ecological construction of planning region. |
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