Evolution Regularity of Groundwater in the Qufu Plain Based on the Impact of Human Activities

Taking the alluvial plain in the Qufu area as an example,the 3D groundwater flow and numerical solute transportation models of the investigated area are established in this study by using nearly thirty years' survey data and the groundwater numerical simulation software FEFLOW.The calibrated model has a high level of simulation precision.An analysis is made of evolution regularity in the investigated area with the model calibrated.The analysis shows that the groundwater level in this area has dropped since 1976 by an annual average of 0.2m.Nitrate concentration has increased by an annual average of 1.05mg/l,the solute transportation are closely related to the groundwater flow,which have obvious regularity.Human activities have a negative impact on the groundwater environment.Scientific management and control sewage discharges should be strengthened in order to prevent further deterioration of the groundwater environment.