Abstract:

The southern area of Sijiaying iron mine is of complex hydrogeological conditions, and the water-controlling structures well develop. The aquifer type has an obvious zonal feature, showing the diversity of aquifer type, which undoubtedly increases the difficulty to infer the hydrogeological parameters of aquifer. Hydrogeological parameters of aquifer have become an important basis for groundwater numerical simulation to forecast and evaluate groundwater resources. Therefore, to verify the obtaining parameters under complex hydrogeological conditions in southern area of Sijiaying iron mine, the authors put forward a new idea, considering the aquifer type and method of obtaining parameters, using aquifer identification of the aquifer type to obtain the aquifer type, recharge condition, impervious boundary,and well storage.Combined with the corresponding mathematical model, the parameters are determined. This research shows that the aquifer identification has the superiority in the aspect of guiding to the calculation of hydrogeological parameters. This method increases the calculation accuracy and it is an effective way to obtain the correct parameters.

Key words: southern area of Sijiaying iron mine, hydrogeological parameter, aquifer identification, transient flow pumping test