摘要
在利用各类雨洪模型软件对LID措施效果模拟计算过程中,受限于实际降雨资料的完整性,经常需要人为选定一种雨型作为模拟的基础条件。当选择不同的雨型时是否会对模拟结果产生影响需要进行系统的分析研究。完整梳理了国内常用的Huff、三角形和芝加哥3种降雨模型的设计原理,分析了各自的特点;之后,以一个实际区域的海绵城市规划工程为例,选用PCSWMM雨洪模型,分别选用3种雨型对拟采用的不同类型LID措施的效果进行了模拟分析计算。结果表明:针对不同的措施,雨型和雨峰位置系数的选择对区域的径流量与雨峰流量削减效果的影响是有差别的;这种差别会随降雨重现期的提高而减少;当措施中有雨水调蓄池设施时,雨型选择的影响明显增加。
In the process of simulating the effect of LID measures by using various types of rain- water model software, it is often limited by the actual rainfall data, and it is often necessary to select a kind of rain as the basic condition of simulation. When the choice of different types of rain will have an impact on the simulation results need to conduct a systematic analysis. In this study, the design principles of Huff, Triangle and Chicago three kinds of rainfall models are summarized, and their characteristics are analyzed. Then, a practical model of sponge city planning is taken as an example. PCSWMM rainwater model is selected. Three kinds of rain types are used to simulate the calculation of the effect of different types of LID measures. The results show that the influence of the selection of rain type and rain peak position coefficients on the runoff and the effect of rainstorm flow reduction is different for different measures. This difference will decrease with the increase of rainfall recurrence period. In the case of rainwater storage facilities, the effect of rain selection is significantly increased.
作者
李俊
吴珊
赵昕
尹文超
张少钦
李茂林
李建业
Li Jun;Wu Shan;Zhao Xin;Yin Wenchao;Zhang Shaoqin;Li Maolin;Li Jianye(College of Architecture and Civil Engineering, Beijing University of Technology, Beijing 100124, China;Beijing Key Laboratory of Water Quality Science and Water Environment Restoration Engineering, Beijing 100124, China;China Architectural Design Institute Co. , Ltd. , Beijing 100044, China)
出处
《给水排水》
CSCD
北大核心
2018年第5期21-27,共7页
Water & Wastewater Engineering
关键词
雨洪模型
雨型
径流量
雨峰位置系数
雨水调蓄池
Rainwater model
Rain type
Runoff
Rain peak position coefficient
Rainwater storage
