Skipochka S.I., Palamarchuk T.A., Yalansky A.A., Bobro N.T., Prohorec L.V. How loading rates influence on the rock strength properties

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Parent Category: Geo-Technical Mechanics, 2016

Category: Geo-Technical Mechanics, 2016, Issue 126

Geoteh. meh. 2016, 126, 116-127

HOW LOADING RATES INFLUENCE ON THE ROCK STRENGTH PROPERTIES
Skipochka S.I., Palamarchuk T.A., Bobro N.T., Prohorec L.V.
IGTM NAS of Ukraine

UDC [622.023.23:539.4]:620.16

Abstract. Subject of the research is the rock strength properties. Objective of the research is to study how loading rates influence on the rock strength properties. Methods of the research is theoretical and experimental investigations and analysis of results. Basing on the analysis of experimental and theoretical studies, it is stated that in the pre-limit stress domain, with increased  rate of the rock loading, the rock compressive strength also increases by a law close to the logarithmic law with an asymptotic approximation to a certain maximum value, above which further increment of the rate stops impacting on these parameters. It is further stated that a significant impact on the rock ultimate strength may cause different stress states for different components, side or hydrostatic backwater, exorbitant temperature and rates of deformation resulted from dynamic stresses due to the rocks caving or rock bumps and rock, coal and gas outbursts.

Keywords: loading rate, deformation rate, rock strength, coal and rock massif.

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About the authors:

 

Skipochka Sergei Ivanovich, Doctor of Technical Sciences (D. Sc), Professor, Head of Rock Mechanics Department, M.S. Polyakov Institute of Geotechnical Mechanics under the National Academy of Science of Ukraine (IGTM, NASU), Dnepropetrovsk, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it.
Palamarchuk Tatyana Andreevna, Doctor of Technical Sciences (D. Sc), Senior Researcher, Principal Researcher in Rock Mechanics Department, M.S. Polyakov Institute of Geotechnical Mechanics under the National Academy of Science of Ukraine (IGTM, NASU), Dnepropetrovsk, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it.
Yalansky Anatoly Aleksandrovich, Doctor of Technical Sciences (D. Sc), Senior Researcher, Principal Researcher in Rock Mechanics Department, M.S. Polyakov Institute of Geotechnical Mechanics under the National Academy of Science of Ukraine (IGTM, NASU), Dnepropetrovsk, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it.
Bobro Nicolay Trophimovich, Master of Science, Engineer in Rock Mechanics Department, M.S. Polyakov Institute of Geotechnical Mechanics under the National Academy of Science of Ukraine (IGTM, NASU), Dnepropetrovsk, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it.
Prohorec Liliya Victorovna, Master of Science, Junior Researcher in Rock Mechanics Department, M.S. Polyakov Institute of Geotechnical Mechanics under the National Academy of Science of Ukraine (IGTM, NASU), Dnepropetrovsk, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it.  

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