Research on Construction of Major Drainage System for urban area of Shijiazhuang

In recent years, many cities of China suffered from urban waterlogging, therefore, prevention of urban waterlogging became one of the main targets of urban drainage. Based on the comprehensive plan of drainage and waterlogging Prevention of Shijiazhuang, this study introduced the relationship between major and minor drainage systems, as well as the significance of major drainage system construction. According to the current problems of urban drainage systems of Shijiazhuang, two-dimensional surface flow modelling tools was applied, with the consideration of urban master planning, major drainage system was established. Which contains eight conveyances for exceedance flow based on urban rivers and fifteen major detention & retention facilities based on urban green space. Thereby, effective alleviation of urban waterlogging was achieved.