EspañolGroundwater numerical simulation in an open pit mine in a limestone formation using MODFLOW and FEFLOW.
7ª ASAMBLEA HISPANO-PORTUGUESA DE GEODESIA Y GEOFÍSICA DONOSTIA – SAN SEBASTIÁN 2012
Groundwater numerical simulation in an open pit mine in a limestone formation using MODFLOW and FEFLOW.
Lorena Álvarez Álvarez, Ramón Díaz Noriega and José Paulino Fernández Álvarez
SUMMARY Groundwater is an important technical difficulty threading the feasibility of open pit mines. An example, shown here, is a complex limestone formation quarry in North Spain. Numerical groundwater simulations help quantify the problem. Here we present the development and results of a numerical model for this aquifer, using both FEFLOW (finite elements) and MODFLOW (finite differences). Differences in approach and implementation are detailed. The results match reasonably well the measured flows and have allowed simulation of practical scenarios of inmediate interest. Furthermore, the model gives aditional information regarding the location of a groundwater divide and propose a permeability zonation, dependent of the degree of fracturing, able to explain the spatially localized groundwater measured flows and is consistent with other observations.Contact us for more information.
