| Study of physical-mechanical rock properties for rock disintegration purposes | Studija o fizičko-mehaničkim osobinama stene radi dezintegracije |
| Underground Mining Еngineering, Review paper [pdf] | Podzemni radovi, Pregledni rad [pdf] |
| ID: 2.2012.21.7 Number: 20 Volume: XX Month: 12 Year: 2012 UDC: 62 [tmx] [bow] |
Pavol Rybár
Institution: Technical University of Košice, BERG Faculty, Košice
Mail: pavol.rybar@tuke.sk | Pavol Rybár
E-pošta: pavol.rybar@tuke.sk |
Ľubomír Štrba
Institution: Technical University of Košice, BERG Faculty, Košice
Mail: lubomir.strba@tuke.sk | Ľubomír Štrba
E-pošta: lubomir.strba@tuke.sk |
Dušan Domaracký
Institution: Technical University of Košice, BERG Faculty, Košice
Mail: dusan.domaracky@tuke.sk | Dušan Domaracký
E-pošta: dusan.domaracky@tuke.sk |
Mária Rybárová
Institution: Technical University of Košice, Faculty of Electrotechnics and Informatic, Košice
Mail: maria.rybarova@tuke.sk | Mária Rybárová
E-pošta: maria.rybarova@tuke.sk |
Ladislav Hvizdák
Institution: Technical University of Košice, BERG Faculty, Košice
Mail: ladislav.hvizdak@tuke.sk | Ladislav Hvizdák
E-pošta: ladislav.hvizdak@tuke.sk |
Mário Molokáč
Institution: Technical University of Košice, BERG Faculty, Košice
Mail: mario.molokac@tuke.sk | Mário Molokáč
E-pošta: mario.molokac@tuke.sk |
Abstract
New method of drilling narrow vertical boreholes by controlled hydrogen combustion assumes that rocks melt and around thermally strained rock form radial fractures under high temperatures and pressures at interaction of the rock and the flame. To verify the range of formed radial fractures in different rock types, it is needed to know in detail rock and mineral properties before and after melting process of the rock. Petrographical, mineralogical, chemical and physical properties of rock samples were studied to have thorough knowledge of rock attributes. Results of this complex rock analysis represent the basis for physical and mathematical modeling of viscous properties of melt of selected rocks and for modeling of radial fractures in the rocks during narrow vertical borehole drilling process. | Apstrakt
Nova metoda bušenja uskih vertikalnih bušotina kontrolisanim sagorevanjem hidrogena podrazumeva da se stene tope i da se oko termički izobličene stene stvaraju radijalne frakture na visokim temperaturama i pritiscima pri interakciji stene i plamena. Da bi se proverio opseg formiranih fraktura u različitim vrstama stene, potrebno je detaljno poznavati svojstva stene i minerala pre i nakon procesa topljenja stene. Proučavane su petrografska, mineraloška, hemijska i fizička svojstva uzoraka stene kako bi se podrobnije upoznala svojstva stene. Rezultati ove složene analize stene predstavljaju osnovu za fizičko i matematičko modeliranje viskoznih osobina rastopa odabranih stena i za modeliranje radijalnih fraktura u stenama pri procesu bušenja uskih vertikalnih bušotina. |
| Keywords: rock properties, drilling, fracture, melt, penetration | Ključne reči: osobine stena, bušenje, pukotina, rastop, prodiranje |
| Pages: 131-133 | Strane: 43 |