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针对城市化地区用地紧张和不透水比例高的特性,基于SWMM模型,模拟了不同比例雨水桶布置在不同设计降雨情境下的区域产流和淹水情况,分析了不同比例雨水桶的应用效果。结果表明,不同比例的雨水桶布置均具有径流和淹水量控制作用,且低重现期降雨情境下雨水桶布置的径流削减和淹水量控制效果明显优于高重现期的降雨情境下的削减效果。雨水桶布置比例的增加对径流系数、峰值流量和淹水量等削减程度增大,对径流系数削减效果更为明显。
Aiming at the characteristics of high land use ratio and impervious ratio in urbanized area, based on the SWMM model, the runoff and flooding of different proportions of rainwater tanks in different design rainfall scenarios were simulated and the application effects of different proportion of rainwater buckets were analyzed. The results show that the different proportion of rain bucket layout has the effect of runoff and submergence control, and the runoff reduction and flooding control effect of rain bucket layout in the low recurrence rainfall is obviously better than that in the high recurrence rainfall scenario effect. The increase of the proportion of the rainwater bucket increases the reduction of runoff coefficient, peak flow and flooding, etc., And decreases the runoff coefficient more obviously.