Prediction Of Groundwater Environmental Impact Based On GMS In A Mining Area

As an important part of water resources,if ecosystems want to achieve normal operation and development,then it is necessary to ensure the quality of groundwater.It plays an important role in safeguarding the daily life of citizens and promoting the development of the whole society.Because of the burial nature of groundwater,once it is contaminated,it is difficult to recover.This will directly endanger human survival.The coal preparation plant in the area is equipped with slime water treatment facilities and drainage pits.During the operation of the project,the slime water treatment facility infiltrated the shallow groundwater through the drip irrigation belt through the drip irrigation and drainage system,thereby polluting the groundwater and directly affecting the quality of the water.First,based on a thorough understanding of the hydrogeological conditions in the study area,groundwater quality testing and hydrogeological exploration are used to evaluate the status of groundwater within the study area.Secondly,from the background data obtained,the aquifer structure,groundwater flow and hydraulic characteristics of the groundwater system are analyzed,and the study area is generalized into a heterogeneous anisotropy and two-dimensional stable groundwater flow system.Then,based on the actual data(such as stratum and source strength),the corresponding numerical model is established in GMS,and the model is corrected by detecting the water level data,so that the numerical model can reproduce the dynamics of the actual water level and flow.The fitting results of the simulated flow field and the measured data show that the groundwater flow field is basically consistent with the measured flow field,which verifies that the numerical model established in this paper can meet the accuracy requirements,and can be used for the arsenic-solute transport of pollutants.Forecast research.Arsenic-is the highest ion in the leachate of the vermiculite transition field.Arsenic-is selected as the characteristic pollution factor to predict the temporal and spatial variation of arsenic in the groundwater system under abnormal conditions.The results show that the leachate leakage of the meteorite turnaround field may cause the most polluted pollution factor arsenic,and has no effect on the nearest well of the meteorite turnaround field and the sensitive target of the Hantaichuan water source protection area.