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THEORY THRLE DIMENSIONAL STRESS ANALYSIS
POLARISCOPE AND ANALYSING EQUIPMENT
3 other sections not shown
average stress axial stresses blocks castolite center line circular polarized compression curves deflection dimensional stress analysis DOCTOR OF PHILOSOPHY dome Duvall equation expansion zone failure fracture Fringe Pattern glue joints horizontal inches above center isoclinics line h line of pillar line of sight load Maximum Stress Concentration midpoint mining operations multiple openings obtained OPENINGS LISTED ovaloid PHOTOELASTIC STUDY pillar edge points of stress Poisson's ratio polariscope positive isotropic point principal stresses quarter wave plates rock ROOM AND PILLAR secondary principle stress shear stresses shear value shown in Figure Single Opening solution South Africa span between pillars stope strain gauges strata Stress Analysis Applied stress distribution STRESS FIELD stress pattern stress trajectory diagrams surface tensile area tensile stresses tension thesis three dimensional analysis THREE DIMENSIONAL PHOTOELASTIC University of Wisconsin value of stress vertical x-y plane zero zone of expansion