以雨水为主水源的城市人工湖水资源论证研究

Demonstration of Water Resources Argumentation in Urban Artificial Lakes with Rainwater as Main Water Source

在海绵城市建设中,如何对雨水进行最合理的使用,是决定海绵城市成功与否的重要一环。结合"海绵城市"理论框架,通过郑州市园博园同心湖实例分析,论证以雨水作为城市人工湖主水源的合理性,遵循相关规范,着重论证同心湖年需水量与降雨汇水总量的供需平衡分析,经研究得出同心湖年降雨汇水总量为15.38万m3/a,年需水量为15.38 m3/a,通过园区内部低影响开发设施等调蓄水措施,改善各月降水不均导致的供需失衡,同心湖蓄水量可维持在16万m3/a,促进雨水资源在园区内的合理利用,可为同类及相似的项目提供参考。

In the development of sponge cities,how to make the most legitimate use of rainwater is a crucial part of determining the success of sponge cities. Based on the theoretical framework of the sponge city,this paper took Tongxin Lake in the Garden Expo Garden of Zhengzhou City as an example,which use rainwater as the main water source. Based on associated criterions,the instantiation of the annual water requirement and rainfall catchment volume was determined.According to the analysis of supply and demand balance,the total annual rainfall catchment of Tongxin Lake is 153 800 m3/a,and the annual water demand is 15. 38 m3/a. The low-impact development facilities in the park and other water regulation and storage measures are used to improve monthly precipitation. The imbalance of supply and demand caused by unevenness,the water storage capacity of Tongxin Lake can be maintained at 160 000 m3/a,which promotes the rational use of rainwater resources in the park,which can provide reference for similar and similar projects.