Résumé
Blocs underlined by fractures networks mainly compose hard-rock aquifers. The complexity of flows through fractures makes inadequate the use of classical techniques for the interpretation of hydraulic tests. Four different methods, well adapted to the complexity of groundwater flows in hard-rock aquifers, are presented for pumping wells and/or observation wells interpretations. The Neuman method is suited for unconfined anisotropic aquifers while Gringarten method is developed for the case of a single horizontal fracture. The third method (Warren and Root) takes into consideration the heterogeneity of the medium, allowing the introduction of a double porosity aquifer (transmissive fractures and capacitive matrix). Finally, the fourth method, Barker theory, assesses the flow dimension related to spatial distribution of conductive fractures and their connectivity. All these methods are presented and illustrated on pumping tests carried out in a granite terrain, south of Hyderabad, India.