Vaes G, Berlamont J
Hydraulics Laboratory, University of Leuven, Heverlee, Belgium.
Water Sci Technol. 2002;45(7):21-9.
In recent years, more emphasis has been put on source control measures in order to reduce the peak runoff from urban areas during wet weather conditions. This involves the construction of upstream storage and infiltration facilities and rainwater tanks for reuse in households and the revaluation of ditches. Because of the long emptying times of source control facilities, a long antecedent period of rainfall influences the design. In addition, these facilities most often have an outflow which is not linearly varying with the storage. Because of the high variability of the rainfall, the required storage volumes can therefore only be assessed well if continuous simulations with long rainfall series are performed. Based on long-term simulations design rules have been set-up for source control measures in Flanders.
近年来，为了减少潮湿天气条件下城市地区的径流峰值，人们更加重视源头控制措施。这包括建设上游蓄水和渗透设施以及家庭雨水回用的水箱，并对沟渠进行重新评估。由于源头控制设施排空时间较长，前期较长时间的降雨会影响设计。此外，这些设施的流出量大多并非随蓄水量呈线性变化。由于降雨的高度变异性，因此只有通过对长降雨序列进行连续模拟，才能较好地评估所需的蓄水量。基于长期模拟，已经为佛兰德地区的源头控制措施制定了设计规则。
