- 21. Effect of harmonic oscillations on a crack initiation in the rock mass
- (Mining)
- ... forecast of gas-dynamic phenomena by the amplitude-frequency characteristics of oscillations. For this purpose, we defined ranges of harmonic oscillation frequencies in some rocks (fine-grained sandstone, ...
- Created on 06 September 2017
- 22. The interrelation between the Novokryvorizka and Skeliuvatska suites of the Kryvyi Rih series
- (Geology)
- ... which corresponds to the volume of Novokryvorizka suite in its modern interpretation, and the latter are part of the metaconglomerate-sandstone-schist, which combines metaterrigene part of Skeliuvatska ...
- Created on 19 January 2017
- 23. Application of pulse-wave technology for oil well completion
- (Mining)
- ... out on the clays sandstone with a tensile strength of 2.4 MPa, which has been treated by pressure pulses with duration of the leading front of up to 5 ms and amplitude of up to 6 MPa. The parameters of ...
- Created on 17 November 2016
- 24. Iron removal process for high-purity silica production by leaching and magnetic separation technique
- (Solid-state physics, mineral processing)
- ... Mokhtar University (UBMA), Annaba, Algeria. A. Chaib, Badji Mokhtar University (UBMA), Annaba, Algeria. Abstract: Purpose. The preliminary study of El-Aouana (Algeria) sandstone quality ...
- Created on 04 February 2016
- 25. Determination of parameters of intensive flat coal seams mining technology in the conditions of negative effect of mining operations on the daily surface
- (Mining)
- ... the thick and strong sandstone layers in covering rock mass is the main factor that determines the daily surface deformations character when the depths of mining exceeds the 20 thickness of seam, mined ...
- Created on 27 October 2015
- 26. Lithochemistry of metaclastogenic sediments of upper Paleoproterozoic of Krivoy Rog iron ore basin on aspects of paleogeographic and paleotectonic conditions of formation
- (Geology)
- ... aim of the present study was to determine paleogeographic and paleogeodynamic features of sedimentogenesis of sandstone-siltstone associations of upper Paleoproterozoic of Kryvoy Rog iron ore basin based ...
- Created on 11 October 2015
- 27. Study of the imperfectly elastic rock deformation behavior
- (Geotechnical and mining mechanical engineering, machine building)
- ... analyze the influence of structural and morphological, and elastic characteristics of defects on the features of the structure and deformation of some sandstones based on the modeling approach and interpretation ...
- Created on 14 January 2015
- 28. Stages of lithogenesis and rock compression behavior
- (Geology)
- ... памятника Каменная Могила / В.А. Баранов // Зб. наук. праць ІГН НАН України. – 2010. – вип. 3. – С. 35–41. Baranov, V.A. (2010), “Determination of stages of katagenesis and forming of sandstones in diagenesis ...
- Created on 11 May 2014
- 29. Phisical-chemical conditions of generation of aragonite in cretaceous deposits in the southeast Ukrainian Carpathians
- (Geology)
- ... bicarbonate-chloride solutions on post-ore formation stage of the arsenic mineralization. The formation of aragonite in the veins in Cretaceous sandstones was associated with the arsenic mineralization ...
- Created on 11 May 2014
- 30. Rock Mechanical Properties and Borehole Stability of Gas Shale
- (Mining)
- ... properties are different from those of ordinary tight sandstones or carbonates. Thus, implementing correlative studies is of great significance to drilling and subsequent reservoir stimulation. Rock mechanical ...
- Created on 21 March 2014
- 31. Structuring of rock and formation of quasicrystals
- (Geology)
- ... of Donbass sandstones and prediction of outburst hazard. Abstract of Dr. Sci. (Geol.) dissertation, National Mining Academy of Ukraine, Dnipropetrovsk. Баранов В.А. Структурные преобразования ...
- Created on 17 October 2013
- 32. Geological and structural features of exogenous-infiltration uranium deposits in the Ingulo-Inguletsky uranium ore region of the Ukrainian shield
- (Geology)
- ... года). – К., 2007. – С. 40–44. Makarenko, N.N., Churzin, G.G. and Kuzmin, A.V. (2007), “Model of education and prospect of development of source of raw materials of uranium deposits of sandstone ...
- Created on 10 July 2013
- 33. Influence of technogenic factor on physical properties of sandstone
- (Mining)
- Authors: V.V. Lukinov, L.L. Shkuro, K.A. Bezruchko. Influence of mining operations which took place in coal mining process on physical properties of sandstone have been investigated ...
- Created on 25 December 2012
- 34. Influence of dynamic loading on structural change in the rocks of different genesis
- (Mining)
- ... Finely-dispersed factions of the destroyed rocks include minute particles of grains of minerals with maximal density of defects of structure. Quartz dominates in finely-dispersed factions of sandstones ...
- Created on 19 December 2012
- 35. Preliminary assessment of heat flow from rock massif into headings and ways of its reducing for microclimat normalization in deep mines of Donbass
- (Environmental safety, labour protection)
- ... of specific heat flux for the main types of rocks of deep horizons (sandstone, shale and limestone) during cooling of the rock mass by air flow moving in the tunnel with different speed. Authors proposed ...
- Created on 21 November 2012
- 36. Estimation of promising areas with the aim of methane accumulations exploration (on the example of mine “Butovska”)
- (Geology)
- ... sandstones calculations of relative linear deformation and relative volumetric deformation for the eastern and western local anticline structures were performed. Findings. Based on the data and ...
- Created on 15 November 2012
- 37. Results of mineralogical and petrographic research of stone artifacts from the Bronze Age settlement Ternivka-1
- (Geology)
- ... artifacts was made of sandstone. It was presented by quartz and plagioclase-quartz varieties with the quartz regenerational (including micaceous), argillaceous, goethite-hydrogoethitic, quartz-goethitic, ...
- Created on 14 November 2012
- 38. Role of tectonic factor in formation of exogenous-infiltration uranium deposits in the Bug-Dnieper uranium ore region of the Ukrainian shield
- (Geology)
- ... factor in the process of forming of exogenous-infiltration deposits (deposits of sandstone type) to raise the efficiency of geological prospecting aiming the increase of uranium raw material reserve containing ...
- Created on 12 November 2012