基于模型评估的生物滞留带效能及参数评价
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摘要
基于低影响开发(LID)理念,选取南宁市某生物滞留设施,采用水文模型法评价了该生物滞留设施对径流的消纳效果及影响因素,并分析了相关参数的敏感程度,以及单因素、多因素条件下参数变化与径流控制率的关系。结果表明:水文模型可以较为客观地评价海绵设施径流消纳效果,生物滞留设施对于较小降雨量具有较好的控制效果,但随着降雨强度增加,径流的控制效果下降迅速。同时明确了不同参数条件对该海绵设施效果的影响,模型法在海绵设施建设评价和设计中具有重要作用。
A bio-retention based on the low impact development( LID) was studied in a city in China. Based on the hydrological assessment software,the runoff control efficiency of bio-retention was investigated. The model assessment method was used to evaluate the sensitivity of the bio-retention runoff retention performance to each parameter,and the relationship between the parameter change and the runoff control efficiency under single factor and multi-factor condition. The results showed that the hydrological model can objectively evaluate the effect of bio-retention on runoff control,and the performance of bio-retention facilities was better on small and medium-sized rainfall events. With the increase of rainfall volume,the control effect decreased rapidly. And the influence of different parameters on the effect of the bio-retention was clarified. This study also illustrated the importance of the model simulation in the evaluation and design of sponge measures in urban construction.
A bio-retention based on the low impact development( LID) was studied in a city in China. Based on the hydrological assessment software,the runoff control efficiency of bio-retention was investigated. The model assessment method was used to evaluate the sensitivity of the bio-retention runoff retention performance to each parameter,and the relationship between the parameter change and the runoff control efficiency under single factor and multi-factor condition. The results showed that the hydrological model can objectively evaluate the effect of bio-retention on runoff control,and the performance of bio-retention facilities was better on small and medium-sized rainfall events. With the increase of rainfall volume,the control effect decreased rapidly. And the influence of different parameters on the effect of the bio-retention was clarified. This study also illustrated the importance of the model simulation in the evaluation and design of sponge measures in urban construction.
引文
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[4]Davis A P,Stagge J H,Jamil E,et al.Hydraulic performance of grass swales for managing highway runoff[J].Water Research,2012,46(20):6775-6786.
[5]傅大宝,姜红.海绵城市理念下植草沟的设计方法研究[J].中国给水排水,2017,33(20):70-75.
[6]黄俊杰,沈庆然,李田.植草沟对道路径流的水文控制效果研究[J].中国给水排水,2016,32(3):118-122.
[7]李楠.海绵城市发展中的问题探讨[J].环境工程,2018,36(5):41-45.
[8]Mc Cuen R H,Knight Z,Cutter A G.Evaluation of the nashsutcliffe efficiency index[J].Journal of Hydrologic Engineering,2006,11(6):597-602.
[9]李博.污水处理厂中PACs的迁移转化规律和归趋模型研究[D].哈尔滨:哈尔滨工业大学,2016.