Determination of indices of strength certificate оf rocks using the method of specimens failure with spherical indentors
About authors
- 1 — Ph.D. Senior research assistant Saint Petersburg State Mining Institute (Technical University)
- 2 — Ph.D., Dr.Sci. Chief Research assistant Saint Petersburg State Mining Institute (Technical University)
- 3 — Senior research assistant Saint Petersburg State Mining Institute (Technical University)
Abstract
The method has been developed for the determination of indices of strength certificate of rocks using the technique of specimen’s failure with oncoming spherical indentors. This method is based on the assessment of ultimate stresses acting in the tensile plane and within the zones of failured rocks under action of indentors at the moment of sample splitting. Formulas were obtained for calculation of indices of strength certificate, i.e. cohesion and angles of internal friction under tensile compression and nonuniform triaxial compression, ultimate strength in uniaxial compression and tension. This method is applicable in situ conditions.
Область исследования:
(Archived) Problems in geomechanics of technologeneous rock mass
Funding:
None
References
- The method for determination of strength of rocks using the specimens of irregular form/AL.Beron, M.I.Koifman,
- S.E.Chirkov, LA.Solomina / The Institute of miming named after A.A.Skochinski. Moscow, 1976. 40 р.
- Korshunov V.A. Determination of indices of volumetric strength of rocks under their loading with spherical indentors. Rock Geomechanics and Mining Surveying Saint Petersburg, Proc. VNIMI, 1999. P.70-75.
- Strength and deformability of rocks/Yu.M.Kartashov, B.V.Matveev, H.V.Mikheev, A.B.Fadeev. Moscow: Nedra, 1979. 269 р.
- Bieniawski Z.T. The point-load strength test in geotechnical practice. Engineering Geology. 9 (1975). P.1-11.
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