Determination of indices of strength certificate оf rocks using the method of specimens failure with spherical indentors

V. A. Korshunov; Yu. M. Kartashov; V. A. Kozlov

Vol 185

Pages:

41-45

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RUS

Research article

Problems in geomechanics of technologeneous rock mass

Determination of indices of strength certificate оf rocks using the method of specimens failure with spherical indentors

Authors:

V. A. Korshunov¹

Yu. M. Kartashov²

V. A. Kozlov³

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)

Date submitted:

2009-07-24

Date accepted:

2009-09-16

Date published:

2010-04-22

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.

Keywords:

rocks strength certificate cohesion angle of internal friction spherical indentors

Коршунов В.А., Карташов Ю.М., Козлов В.А. Определение показателей паспорта прочности горных пород методом разрушения образцов сферическими инденторами // Записки Горного института. 2010. Т. 185 . С. 41-45.

Korshunov V.A., Kartashov Y.M., Kozlov V.A. Determination of indices of strength certificate оf rocks using the method of specimens failure with spherical indentors // Journal of Mining Institute. 2010. Vol. 185 . p. 41-45.

References

Методика определения прочности горных пород на образцах полуправильной формы / А.И.Берон, М.И.Койфман, С.Е.Чирков, И.А.Соломина / Институт горного дела им.А.А.Скочинского. М., 1976. 40 с.
Коршунов В.А. Определение показателей объемной прочности горных пород при их нагружении сферическими инденторами // Горная геомеханика и маркшейдерское дело: Сборник научных трудов / ВНИМИ. СПб, 1999. С.70-75.
Прочность и деформируемость горных пород / Ю.М.Карташов, Б.В.Матвеев, Г.В.Михеев, А.Б.Фадеев. М.: Недра, 1979. 269 с.
Bieniawski Z.T. The point-load strength test in geotechnical practice. Engineering Geology. 9 (1975). Р.1-11.

Determination of indices of strength certificate оf rocks using the method of specimens failure with spherical indentors

Abstract

References

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