Optimization of Urban Drain Layout Using GIS

The optimization of urban drain layout plays an important role to the protection of water ecosystem and urban environment. The paper puts forward a method to properly locate urban drain using population based incremental learning (PBIL) algorithm. The main factors such as regional containing sewage capacity, sewage disposal capacity quantity limit of drains within specific area are considered as constraint conditions. Analytic hierarchy process is used to obtain weight of single factor, and spatial analysis of environmental influencing factors is carried on based on GIS. The method is applied to actual engineering. The results have proved urban drain layout using GIS and PBIL algorithm excels traditional method and it can protect the urban environment efficiently and ensure the healthy development of water ecosystem successfully.