Prof. L.I. Baron recognized five forms of destruction all the while uniaxial compression of samples of common geometry of rocks containing truncated chunk, wedge, angled, longitudinal, and explosive forms. All of bureaucracy are commonly from the destruction of samples in their principal parts showing two or more cracks, while the trajectories of crack growth align accompanying the corner points of the samples. Recently, was unexpectedly found a spall fracture in the form of a sole crack emerged from the side obstruction of the specimen and spreading into it under uniaxial compression. Based on the finding, the method for establishing stress-strain diagrams for extreme rock samples was developed utilizing four rock properties to a degree rock shear opposition limit, contact friction percentage, internal rubbing ratio, and modulus of stretchiness. The stress-strain diagram of the spall rupture of high samples is described by a downward curve, which is conventional for the diagrams of rupture created by two abutting cracks of regular arithmetic samples. The maximum stresses required for the demolition of high rock samples are inferior those for the destruction of formal geometry samples of rocks accompanying similar material and mechanical possessions.
Author(s) Details:
Leonid Vasyliev,
Institute of Geotechnical Mechanics named by N.
Poljakov of National Academy of Sciences of Ukraine, Simferopolska, 2a, Dnipro,
49005, Ukraine.
Dmytro
Vasyliev,
Institute
of Geotechnical Mechanics named by N. Poljakov of National Academy of Sciences
of Ukraine, Simferopolska, 2a, Dnipro, 49005, Ukraine.
Mykola Malich,
Ukrainian State University of Science and Technologies, Lazaryana Str., 2,
Dnipro, 49010, Ukraine.
Zakhar Rizo,
Institute of Geotechnical Mechanics named by N. Poljakov of National
Academy of Sciences of Ukraine, Simferopolska, 2a, Dnipro, 49005, Ukraine.
Please see the link here: https://stm.bookpi.org/FRAPS-V2/article/view/10142
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