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It was established that the stress state at a point underground was as given below: x = 25Mpa, y = 65Mpa, z = 75Mpa, xy
It was established that the stress state at a point underground was as given below:
x = 25Mpa, y = 65Mpa, z = 75Mpa, xy = 75MPa, yz = 50MPa and xz = 25MPa
(i) Determine analytically, the normal and shear stresses on an oblique plane whose direction cosines are cos = 0.5, cos = 0.5 and cos = 0.5
(ii) Calculate the minimum value of the angle of internal friction required for stability on the plane if cohesion in the rock mass along the plane was given as 1.5MPa
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