The following relieved deformations have been measured on a rock surface (tunnel
ID: 1860936 • Letter: T
Question
The following relieved deformations have been measured on a rock surface (tunnel
The following relieved deformations have been measured on a rock surface (tunnel's wall) using a rectangular strain rosette: Initial distance between reference points: (O-A) = (O-B) = (O-C) = 12 in. Distances measured after stresses have been relieved: (O-A') = 12.040 in. (O-B') = 12.020 in. (O-C') = 12.015 in. Material constants for the rock: Calculate the maximum and minimum principal stresses acting on rock surface. Calculate the orientation of the principal stresses and show their directions on the drawing. Draw a Mohr's circle for the problem. Use engineering paper, a proper scale, protractor and a pair of compasses.