基于SWMM的核电站厂区雨水排放系统计算研究

Study on the calculation of storm drainage system in nuclear power plant based on SWMM

核电站厂区雨水排放系统功能是收集厂区暴雨形成的径流排水,通过管渠排放至厂外,以避免暴雨形成的径流影响厂区,甚至是造成厂址水淹。文章基于SWMM采用数学模型法结合动力波法对雨水管网进行计算研究,并与传统计算方法进行了对比分析。结果表明对于雨水量计算,数学模型法计算结果较传统计算方法更为保守,管网越大越明显。对于核电站厂区,按推理公式法结合管网恒定流设计管网与按数学模型法结合动力波法设计的管网规模参数相当。利用SWMM对雨水管网进行了优化,并复核了校核工况下厂址水淹深度。

Nuclear power plant storm drainage system is designed to collect plant the storm water from roof and ground and then discharges it into the sea or lake around the plant,to avoid the flooding on the site.The mathematical model method combined with dynamic wave method based on SWMM was used to calculate the system,and compared with the traditional calculation method.The results show that the mathematical model method is more conservative than the traditional calculation method for the calculation of rainfall.The results show that the designed system of nuclear power plant based on the above two methods have considerable size.Optimization and verification of the system has been done based on the SWMM.