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Prediction of ground water pollution in karst aquifer with conduit based on GMS simulation in Chongzuo of Guangxi

HONG Shu-na;LAN Jun-kang;CHEN Li-na;XIA Yuan;Guangxi Scientific Experiment Center of Mining,Metallurgy and Environment,Guilin University of Technology;  
In order to predict the karst ground water polluted by a REE separation project in Chongzuo,GMS software was used to simulate the migration of contaminants in various kinds of sewage leaking emergencies. The simulation results showed that as the migration of contaminants in the aquifer was very slow,there was a certain distance from the seepage point to the pipes of north side,and the pollution plume was roughly round. The analysis shows that the the migration of contaminants can be classified as molecular diffusion. The slow migration of polluted ground water was caused by the slow flow of the ground water in rock matrix on the leaking site and the polluted ground water could not immediately flow into karst conduits. The untreated sewage can form a high concentration of the pollution plume and pollute the karst ground water seriously.
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