郧县老城区排水管网改造方案探讨

Study on the drainage network rehabilitation plan in old downtown of Yunxian County

以南水北调中线工程核心水源区内小尺度区域——湖北省十堰市郧阳区(原郧县)老城区为研究对象,运用MIKE FLOOD软件,结合老城区实测地形与管网普查资料建立模型,利用率定后的模型基于不同的降雨情况对老城区进行现状排水系统排水能力评估与内涝风险评估,根据结果分析内涝成因,找出现状排水管网中存在的问题,并对老城区雨污水管网改造设计和施工进行了探讨,得出最佳的改造方案。

In this paper,a case study was carried out for the small-scale area in the core water source area of South-to-North Water Diversion Project：the old downtown of Yunxian County in Shiyan City,Hubei Province.Based on the census data of old downtown terrain and drainage pipe network,a model was built up by using MIKE FLOOD software.Using the model after the calibration and do the drainage system drainage capacity assessment and waterlogging risk assessment of the old downtown based on different rainfall scenarios,this paper analyzed the causes of waterlogging based on the result and found out the problem of present situation drainage network.In addition,the reconstruction design and construction of the old downtown sewerage and stormwater drainage pipeline reconstruction plan were discussed and the best plan was figured out.