湖北武汉市城市排水除涝规划设计问题探析

Research on issues in planning and designing urban flood drainage system in Wuhan

根据武汉市不同片区雨量观测站实测雨量值,分析汉口片区雨水管渠设计暴雨强度公式的适用范围,城市防内涝设计暴雨量及其过程线的选择方法。通过分析雨水管渠设计标准与城市内涝防治设计标准的关系、城市排涝泵站设计流量与雨水管渠设计流量的关系、以及与农业排涝泵站设计流量计算方法的区别,提出城市排涝泵站设计流量计算方法。

Using rainfall data collected from rain stations in various locations around Wuhan City, the application extent of rainfall intensity equation used in storm sewer design in Hankou is analyzed and select storm rainfall designed by urban waterlogging prevention and its progress graph are determined. The relationship between drainage pipe design standard and urban waterlogging prevention design standard are analyzed. The connection between flow designed for drainage pipe and flow designed by urban drainage pumping station are studied. The different methods of compute flow designed by urban drainage pumping station and flow designed by agricultural drainage pumping station are identified. At last, the computational method of designed flow for drainage pumping station in urban is proposed.