Application Of Correlation Coefficient Extremum Method In Ground Water Solute Transport Simulation

In recent years, the rapid development in the society at the same time, the excessive discharge of wastewater caused serious destruction to the environment, but also cause of groundwater contamination, the large space scale and long time span of the analysis and prediction of groundwater solute transport demand are put forward.Based on a industrial park of ammonia leakage pollution of groundwater as an example, use the method of correlation coefficient extremum of the groundwater dispersion parameter is analyzed, and the dispersion parameters used in the groundwater simulation software GMS module, the prediction of the diffusion of ammonia. In this paper, the main results were as follows:1, The analysis of the hydrogeological conditions, groundwater occurrence conditions, on the basis of determining the project area.groundwater type, according to the aquifer medium and burial conditions are divided into quaternary loose mass of sandy gravel layer pore water and two types of cretaceous bedrock fissure water in loose sandy gravel layer pore water is given priority to. And the aquifer from top to bottom is divided into permeable layer, the weak permeable layer and relative water-resisting layer.2, Through the analysis of the project area hydrogeology, generalized simulation area. Through the field pumping test and injection test data, the hydrogeological parameters of the initial value is given, and then put the parameters into the model, through the adjustable parameter, finally the more accord with the actual hydrogeological parameters is determined.3, Through the literature to calculate the dispersion coefficient correlation coefficient extremum method, through the field dispersion test of tracer concentration-time data for analysis and calculation, calculate four parameters, groundwater flow velocity, respectively, effective porosity, longitudinal and transverse dispersion degree.4, The dispersion parameter generation into solute transport simulation, according to the simulation results, the ammonia mainly southeast migration in groundwater; And over time, the diffusion scope expanding gradually, under the effect of groundwater flow, the longitudinal migration area significantly greater than the horizontal, the underground water pollutant area significantly greater than the upstream, downstream and ammonia leakage after 14 years, the pollution range will enter a nearby stream.