Effects of a Gravel Pit Lake on Groundwater Hydrodynamic

In Europe, 1132 Mt of sand and gravel were mined in 2019, which causes major changes to the hydrogeological cycle. Such may lead significantly raised or lowered groundwater levels. Therefore, aggregate sector has ensure that impacts on existing environmental water infrastructures are kept a minimum post-mining phase. risk assessments often made by empirical methods, based assumptions do not meet real aquifer conditions. To investigate this effect, predictions numerical methods about hydraulic head caused pit lake compared. Wrobel’s equation, is Sichardt’s was used as method, while flow model been solved means finite-element method FEFLOW. The provides smaller ranges increased/decreased levels method. underestimation results related finding field measurements during pumping tests show larger extent drawdown than calculations with equation. Simplifications 2D approach have evaluated against derived from 3D model. Our clearly faster cheaper method—Wrobel’s preferred over more expensive time-consuming underestimates area. This especially critical when assignment mining permits such computations. we recommend using models pre-mining phase accurately compute gravel/sand excavation’s hence effective protection other systems.