沈阳市排水管渠设计重现期标准研究

Study on Design Return Period Standard of Urban Drainage Pipelines in Shenyang

沈阳市现状排水管渠设计重现期为3年,处于规范规定的下限水平。结合当地气候和地理条件,对沈阳市排水管渠设计重现期标准进行了分析研究,认为沈阳市不宜大面积提高排水管渠设计重现期标准,可按照地区重要性适当提高标准;同时应推进海绵城市建设,增加城市雨水蓄滞空间,减轻市政道路雨水管线压力,从而提高排水系统的排放能力。

The design return period of the existing drainage pipes and canals in Shenyang is 3 years,which is in the lower limit of the standard.Combined with local climate and geographical conditions,this paper analyzes and studies the design return period standard of drainage pipelines in Shenyang.It is considered unsuitable to improve the standard in large area of Shenyang.The standard can be appropriately improved according to the regional importance.At the same time,the construction of sponge city should be promoted to increase urban rainwater storage space,reduce pressure of municipal road rainwater pipeline so that the discharge capacity of drainage system could be improved.