GMS is the important groundwater numerical software to simulate groundwater flow distribution, migration of groundwater contaminants, etc. This paper takes the chemical plant zone as an example and uses GMS to predict the concentration of pollutants and the polluted area after generalizing the geological model, parameter identification, and adjusting-parameter processes. The effect of spread of the plant leachate on downstream pumping wells is studied, and.a factory model of groundwater flow and solute transport model are set up. Results show that the regional groundwater flows from north to south, and along the flow direction the water level decreases relatively moderately. Groundwater descent funnel is formed in the downstream pumping well. Pollutant concentration continues to increase, with local pollutant concentration as high as 4.1mg/L, which has gradually exceeded the scope of pollution. The pollution area is about 823509.67m² and the downstream diffusion length is about 1084.64m. In the vertical direction, plant pollutants have spread to the second-level deep aquifer. If not controlled, the water output will intensify the pollutant diffusion velocity.

GMS  /  geological model of generalized  /  adjusting-parameter  /  leachate  /  flow model  /  solute transport