Influence of dynamic loading on structural change in the rocks of different genesis
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Category: Mining
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Last Updated on 25 December 2013
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Published on 19 December 2012
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Authors:
E.I. Yefremov, Corresponding Member of the National Academy of Sciences of Ukraine, Dr. Sci. (Tech.), Professor, N.S. Poliakov Institute of Geotechnical Mechanics of National Academy of Science of Ukraine, Dnepropetrovsk, Ukraine
K.S. Іshchenko, Cand. Sci. (Tech.), Senior Research Fellow, N.S. Poliakov Institute of Geotechnical Mechanics of National Academy of Science of Ukraine, Senior Research Fellow, Dnepropetrovsk, Ukraine
I.L. Kratkovsky, Senior Research Fellow, N.S. Poliakov Institute of Geotechnical Mechanics of National Academy of Science of Ukraine, Senior Research Fellow, Dnepropetrovsk, Ukraine
A.S. Baskevich, Cand. Sci. (Phys.-Math.), State Higher Educational Institution “Ukrainian State University of Chemical Technology”, Senior Research Fellow, Dnepropetrovsk, Ukraine
Abstract:
Purpose. To study the destruction character of polymineral rock of different genesis for creation of resource- and energy-saving methods of its production.
Methodology. In laboratory and ground environment the structural change in the polymineral rocks of different genesis affected by dynamic loading of different intensity (high-speed centrifugal percussion installation, explosive destruction of models) has been studied by means of the x-rayed setting of DRON-3, polarization microscope of MP-2, provided with integrator of ISA.
Findings. The results of granulometric and x-rays analyses of fine-size factions of the rocks of magmatic, metamorphic and sedimentary genesis, destroyed by the dynamic loading are presented.
Originality. During the study of fine-size factions of sedimentary, metamorphic and metasomatic granites by means of light-optical and x-rays methods we have find out the analogy in shock and explosive destruction character of rocks with different genesis. 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 and ferrous quartzite. For metasomatic granites affected by the explosive loading in composition of 0–100 mkm faction the particles of albite and calcite prevail above the particles of quartz. Lines characteristic for U-containing minerals appear in the x-rayed spectrum of granites.
Practical value. The executed researches will allow us to develop recourse- and energy-saving methods of production and processing of mineral raw materials.
References:
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