The main activity of the laboratory for geo-mechanics is testing the physical and mechanical characteristics of the soil and rocks according to the SRPS standards for the purpose of designing, construction and exploitation (all forms of exploitation), in construction, physical-mechanical characterization of construction stone, depositing of tailings and ash, reclamation and landscaping of the degraded area, analysis and remediation of the terrain instabilities etc.
The laboratory conducts: • Identifi cation classifi cation testing (moisture content determination, mass volume with pores, mass volume without pores, granulometric composition, consistency); •Testing of resistance properties (test of direct shearing); •Testing of deformation properties (oedometer test); •Testing of compaction (Proctor’ test); • Bearing testing (CBR test, determination of a single-axis pressure solidity); •Testing of permeability (with a constant and descending pressure); • Testing of solidity, elastic and deformation rock qualities; • Testing of resistance to cutting during coal excavation; • Testing of how crushable the coal is.
As part of broader research, development, innovative and designing activities of the Mining Institute, the Laboratory for geo-mechanics participates in the creation and technical control of projects for engineering-geological explorations, exploration drilling, engineering-geological terrain mapping, creation of maps and profi les for geostatic analysis and calculations of drops and slopes, remediation of landslides, dam and tailings and ash depot construction, load bearing and soil settling calculations for construction objects, geostatic calculations for designing of open pits, chutes, underground rooms and tunnels, construction and technical control of geo-technical papers for the purpose of facility construction, geo-technical monitoring etc.
The geo-mechanics laboratory began operation immediately aft er the Mining Institute was formed, and during fi ft y fi ve years it had conducted several millions of laboratory and fi eld tests, experimental tests, analysis and papers, for all mines of Serbia and Yugoslavia that are of signifi cance. Th ose are foremost the coal basins Kolubara, Kostolac, Kosovo, Ugljevik, Gacko, Bitolj, Pljevlja, coal mines Velenje, Aleksinac, Resavica, mines of Ibar, Bogovina, Krepoljin, Lubnica, mines of Istra, Kreka, Banovići, Stanari, Šički brod etc., mines of colored and noble metals mining-smelting basin of Bor, copper mine of Majdanpek, Stari trg, Ajvalija, Rudnik-Rudnik, Kišnica, Novo brdo, Lece, Srebrenica, Sasa, Brskovo, Koporić, Žuta prlina, Jelakce, boxite mines of Nikšić, uranium mine of Žirovski vrh, numerous mines of non-metallic mineral ores of Beočin, Novi Popovac, Kosjerić, Rgotina, Jelen do, Kikinda, Novi Bečej, Ub, Golubac etc.
Th e laboratory had signifi cantly contributed to the solution of the problem from an area of its expertise in the operation of the Electric industry of Serbia, in thermal plants Nikola Tesla Obrenovac, Kolubara, Kostolac, Bitolj and Pljevlja.
The laboratory was a front runner in the introduction of modern methods and procedures, among the fi rst in the world to apply the photo-elastic modelling of voltage-deformation states in a rock massive. Th e associates of the laboratory actively support the teaching and training of students, and through measurement and testing and experimental tests assist in the writing of master’s thesis and doctoral dissertations at the Mining-geology Faculty of the University of Belgrade.
The laboratory is accredited by the Accreditation department of Serbia, standard SRPS ISO/IEC 17025.