Impact of Urbanization Process on Drainage System and Modification Measures Analysis

With the speeding up of urbanization process and frequently appearing of extreme weather, urban waterlogging is becoming increasingly serious. In this paper, the SWMM model combined with ArcGIS was used to stimulate the drainage system of the study area, a part of Dalian, and then the impact of urbanization on the existing drainage system was analyzed. As a result, Hydro-Brake Optimum was brought up and applied as a renovating measure. The results revealed that: urbanization increases the volume of runoff and the load of the existing drainage system, and as an aided solution, Hydro-Brake Optimum can reduce and delay the flow peak in the downstream pipelines by controlling water flow in the upstream pipelines. This research may provide guidance and theoretical basis for urban drainage system planning and designing and Urban Flood Control and Drainage.