Simulation of Sudden Water Pollution Accidents of Hun River Based on SMS

This paper, based on the geographic information and hydrological data, taking Shenyang section of Hun River Basin as study area, has introduced SMS software to set up the regional digital model. During the establishment of digital triangle mesh, geographic data is created, transformed, adjusted and revised. The two-dimensional hydrodynamic module RMA2 and water quality module RMA4 in the software are both used to build the hydrodynamic model and water quality model. On this basis, this papersimulates migration and transformation of pollutants in the river when pesticide 2,4-D polluted into the river. Besides, this article creates images to display the special and temporal changes in pesticide concentration visually. It also shows the process of contaminants flow through the city of Shenyang. According to the simulation results, sudden water pollution accident response strategies are explored, which can provide scientific technology and practical support about the emergency warning management system for the governmental departments.