摘要
在地方降雨强度公式的基础上,按照芝加哥雨型对降雨强度进行时程分配。概化出渗透型低影响开发(LID)设施的水力学概念模型,并利用差分的形式求解渗透型LID设施的水量平衡方程,得到LID设施不同分层的水量变化过程。将求解结果与传统的调蓄容积计算方法对比,结果表明基于降雨强度过程调蓄容积计算方法得到调蓄容积更准确,更经济,而且可以根据渗透型LID设施不同分层结构的水量过程进行结构设计,可以为海绵城市建设中低影响开发设施的规模计算提供一定的参考。
On the basis of the local rainfall intensity formula, the rainfall intensity is allocated according to the Chicago rain intensity. A conceptual model of hydraulics for generalized infiltration type LID facilities, and the water balance equations of the infiltrated LID facility are solved by differential method, which can derive the water change process of different layers of the LID facility. The results of the solution are compared with the traditional calculation method, which shows that the method is more accurate and economical than the traditional method and serve as a reference for the sponge city construction.
出处
《中国农村水利水电》
北大核心
2017年第11期78-82,共5页
China Rural Water and Hydropower
关键词
低影响开发
降雨强度过程
调蓄容积
渗透
水量平衡
low impact development
rain intensity process
storage capacity
infiltration
water balance
