Introduction to Rock MechanicsWiley, 1980 - 478 páginas Introduces a new approach to rock mechanics called ``block theory,'' which formalizes procedures for selecting proper shapes and orientations for excavations in hard jointed rock. Applies block theory to rock slopes and underground excavations, and covers the Q theory of rock classification, the empirical criterion of joint shear strength, rock bolting, properties of weak rocks, statistical frequency of jointing, an empirical criterion of rock strength, and design of underground supports. Contains many new problems with worked-out solutions. |
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SYMBOLS AND NOTATION | 1 |
50 | 24 |
CHAPTER 4 | 96 |
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analysis anisotropic Assuming axial bearing capacity behavior Bieniawski block borehole calculated circle compression test compressive strength concrete confining pressure constant cracks creep curve deformation depth determined deviatoric diameter dip vector direction discontinuities displacement drill elastic engineering Equation excavation factor of safety failure fault fissures flat jack force foundation friction angle G₁ G₂ gage hole horizontal stress in-situ initial stresses isotropic ISRM joint layers limestone load measured minerals modulus normal stress orientation overcoring P₁ parallel peak permeability perpendicular pier pillar plane plotted Poisson's ratio pores porosity principal stress problems properties radial ratio rock bolts rock mass Rock Mech Rock Mechanics rock slopes sandstone schist shale shear strength shear stress shown in Figure sliding stereographic projection strain stress-strain structures surface tensile tensile stress Toppling triaxial compression tunnel Tx'y underground vertical stress viscoelastic water pressure σ₁