Engineering Rock Mechanics
62 Strain and the theory of elasticity material - why? Hence explain why five elastic constants are re- quired for a transversel ...
Questions and answers: strain and the theory of elasticity 63 Circled values are equal in transversely isotropic rock symmetri ...
64 Strain und the theory of elasticity We invert these equations to find the strains sx, sy and yxy as -1 cos2 OP sin2 OP sin ~p ...
Questions and answers: strain and the theory of elasticity 65 principal strains from the measured strains, and then determine th ...
66 Strain and the theory of elasticity (c) A strong sandstone with almost no fractures present. (d) A granodiorite with three fr ...
Questions and answers: strain and the theory of elasticity 67 convenient to assume that the rock is isotropic and that the labor ...
68 Strain and the theory of elasticity Force transducer signal Displacement transducer signals Servo-valve ._-- I Laboratory roc ...
Additional points 69 (1) Elasticity theory has been developed assuming that the strains are in- finitesimal. There is a theory o ...
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Intact rock: deformability, strength and failure 6.1 Intact rock The two main mechanical components of a rock mass are (a) the i ...
72 Intact rock: deformability, strength and failure Figure 6.1 Rock core obtained from a site investigation borehole provides sa ...
Intact rock 73 loading, through a relatively linear elastic zone, to the compressive strength (the peak of the curve), and then ...
74 Intact rock: deformability, strength and failure Figure 6.3 The trilithons at Stonehenge in the UK. where fluids have circula ...
Questions and answers: intact rock 75 A Displacement Volume Displacement to a positive slope. The specimen continues to dila ...
76 lnfad rock: deformabilify, strengfh and failure be drawn from it. Derive an expression for the uniaxial compressive strength ...
Questions and answers: intact rock 77 Next, for each Mohr circle, draw the radius that is perpendicular to the tangent Mohr-Coul ...
78 lntacf rock: deformabiliv, strength and failure From this, we see that (rc - rt)/(rc + r,) = sin +, and upon rearrangement we ...
Questions and answers: intact rock 79 envelope. Firstly, if a fracture forms at 20" to the loading axis, then the angle between ...
80 Intact rock: deformabilify, strength and failure axial stress yield point (85,39.1) confining pressure (i) We are given infor ...
Questions and answers: intact rock 81 14.5 MPa I axial stress The principal stress form of the Mohr-Coulomb criterion tells us t ...
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