DETERMINATION OF IN-SITU HYDRAULIC PARAMETERS IN JOINTED ROCK

Abstract

A ROCK MASS IS ANISOTROPICALLY DISCONTINUOUS BECAUSE OF FRACTURING. THE GROUNDWATER FLOW THROUGH SUCH A MEDIUM IS DETERMINED BY THE JOINT DISTRIBUTION AND GEOMETRY; THE PERMEABILITY OF INTACT ROCK IS GENERALLY NEGLIGIBLE COMPARED WITH THE HYDRAULIC CONDUCTIVITY OF JOINTS. IT IS ASSUMED THAT THE ROCK IS DIVIDED BY SEVERAL SETS OF PARALLEL JOINTS. THE PROBLEM OF DETERMINING THE ROCK MASS HYDRAULIC PARAMETERS WILL BE APPROACHED THEORETICALLY. FIELD TESTING REQUIREMENTS INCLUDE EITHER A PUMPING TEST OR A DILUTION TESTS. PRACTICAL SUGGESTIONS REGARDING THE PERFORMANCE, OF THESE TESTS IN THE FIELD WILL BE GIVEN. /AUTHOR/