422 / 2019-02-27 16:05:14

Research on Distributed Computing Model and Technology Implementation of Watershed Outlet Runoff in Sponge City Planning

Distributed Computing Model,Watershed Outlet Runoff,Sponge City Planning,ArcGIS Spatial Analysis

全体主题 > Urban Planning & Modeling

The calculation of watershed outlet runoff in mountainous cities is an important scientific basis for the planning and construction of Sponge City, and it is an urgent technical problem to be solved in the current panning of Sponge City in China. Based on the distributed hydrological model, this study uses the powerful Geoprocessing tools and ModelBuilder function modules of ArcGIS Software to integrates multiple hydrological models into a reusable and adjusted tool, and realizes the integrated simulation of watershed runoff process and flow concentration process under various rainfall intensity scenarios. Taking the upper reaches of the Tingjiang River, north of Changting County, Fujian Province as an example, by obtaining vector and raster spatial data such as DEM, land use, rainfall intensity, etc., simulated a series of hydrological models, such as runoff generation and confluence, etc,. and obtained flow rate change curves at different time periods at the outlet of the watershed. The empirical results show that the integrated method of spatial distributed runoff model and confluence model outlet flow calculation model proposed in this study is suitable for the planning and design of Sponge City in small and medium-sized watersheds in southern mountainous land of China.