The Research of Waterflow in Porous Carbonate Rocks of the Nowa Wioska Dolomite Mine Using Geoelectrical Methods

摘要

This paper presents results of geoelectrical research conducted in summer 1998 in Nowa Wioska Dolomite Mine in Siewierz, Poland. Three aspects were connected within this research: geological, hydrogeological and geophysical. The main purpose of these surveys was to investigate the waterflows through the porous massif. Another aim was to check whether the water flowing from the whole mine to a sump is thrown away outside the depression cone established for this mine or comes back to the mine and is pumped out again. In order to trace the path of waterflow, measurements were conducted before and after increasing the mineralization of mine water. This increase of mineralization was gained by adding sodium chloride (NaCl) to the mine water. To gain the best results, the resistivity method, i.e., Vertical Electrical Sounding (VES) in connection with Chemical Tracer Method was chosen. The Schlumberger configuration of electrodes was applied. The mode of this research allowed to compare the resistivity of rock layers measured before and after adding sodium chloride to the mine water and on this basis provided some conclusions concerning the way of waterflows in this mine. It can be supposed that water from the first mine level comes back to the sump on the third level in a short time by the system of pores and fissures in the carbonate massif.