Account of stress gradients in rock mass in designing of mining constructions
About authors
- 1 — Ph.D., Dr.Sci. Head of Laboratory Institute of Mining Art of the North, SO RAS
- 2 — Ph.D., Dr.Sci. Professor Institute of Mining Art of the North, SO RAS
Abstract
Using the gradient approach the criteria of shear and tensile cracking are developed in compression under conditions of stress concentrations near mine workings. Considering the size effect, a function type of local strength is determined, expressions for critical pressure are derived and comparison between analytical and experimental data is performed.
Область исследования:
(Archived) Problems in geomechanics of technologeneous rock mass
Keywords:
displacement fractures
rupture fractures
ultimate state of stress
scale effect
function of local strength
References
- Sukaryov S.F. Application of the gradient approach for assessment of rock strength / S.V.Suknyov, M.D.Novopashin//FTPRPI. 1999. № 4. P.54-60.
- Sularyov S.V. Determination of local mechanical properties of the materials/S.V.Suknyov, M.D.Novopashin // DAS. 2000, Vol.373. № 1. P.48-50.
- Sukuyov S.V. Criterion of formation of rupture fractures in rocks under compression conditions/S. V.Sukuyov, M.D.Novopashin // FTPRPI. 2003. № 2. P.30-37.
- Nesetova V. Fracture from compressive stress concentrations around elastic flaws / V.Nesetova, E.Z.Lajtai // Int. J. Rock Mech. Min. Sci. & Geomech. Abstr. 1973. Vol. 10. P.265-284.
- Carter B.J. Tensile fracture from circular cavities loaded in compression/B.J.Carter. EZ Lajtai, Y. Yuan // Int. J. Fract. 1992. Vol.57. № 3. P.221-236.
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