| Abstract |
The wider area of place Ilidža is characterized by a variety of lithology, tectonic complexity and remarkable geomorphological phenomena, from which result complexity of hydrogeological relations and the existence of many surface flows and accumulations of various types of groundwaters. Drinking, mineral, thermal and thermomineral waters in karstic Triassic carbonate rocks and alluvium are concentrated at a distance of 3 km only from Ilidža to Blažuj. All waters have high capacities, verified indications of quality with a broad range of applications. The Roman Emperor Diocletian had been treated here for ischialgia and name of Ilidža derives from Ottoman rule in Bosnia and Herzegovina comes from the Turkish word ilaç (= drug), which is clearly associated with healing thermomineral waters of Ilidža. Thermomineral waters of Ilidža are the most important. There are 5 types of CO2 –H2S and CO2 waters with temperature of water from t = 20–58°C. H2S–CO2 water in the center of Ilidža are surrounded by CO2 and thermal waters in the form of incomplete belts and around these the large zones of cold waters exist in Triassic karst and alluvium media. The total yield of artesian flow of wells with CO2–H2S water with t =58° is about Q=260 l/s and a power of 50 MWtherm, referent to 10°C. The waters are of meteoric origin, prenuclear age and very slow circulation and water exchange, CO2 is of hydrothermometamorphic genesis. IB-10 well, made in 2004, 500 m only from the zone of CO2–H2S waters, with thermomineral CO2–waters, depth of 1100 m, only one of all wells has separated different waters horizons with great temperature inversion (t=38°C at 550 m, interval 1002-1100 m, t=20°C, Qpump=86 l/s) and substantially reduced mineralization and the content of CO2 along the depth. The more it was explored in the past, hydrogeothermal model of Ilidža waters is the more complex today. The new data of well IB-10 are even more unknown and becomes puzzling, especially in the development of plausible deep geological and geothermal profile of terrain and the possibility of determination of the aquifer with the temperature more than 58°C, which is the most important task in future research. Many indications point to the existence of water temperature more than 58°C in the primary aquifer and proven seismoactive levels of over 5 km depth give the same possibility of descendence of meteoric waters and their heating in that depth. |