If the angle of internal friction of a rock material is 32, what should ideally be the angle between shear fractures formed in the rock and the maximum compressional stress axis? (in degrees)
It's 29°, bcz angle between shear fractures formed in the rock and the maximum compressional stress axis (theta) = 45°- phi/2 [45°-32°/2 = 29°], where phi is the angle of internal ...