The results of four fracture experiments on samples of Rohan Tuff are recorded in the table below.

Question:

The results of four fracture experiments on samples of Rohan Tuff are recorded in the table below.Experiment no. I 2 3 4 c 14 MPa 42 MPa 70 MPa 99 MPa a at failure 87 MPa 164 MPa. 242 MPa 321 MPa

1. Draw Mohr circles for each experiment, and draw the failure envelope.

2. Determine the Coulomb coefficient of the Rohan Tuff.

3. Determine the angle u that the fracture plane is predicted to form with the σ3 direction when a sample of Rohan Tuff fractures.

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Related Book For  book-img-for-question

Structural Analysis And Synthesis A Laboratory Course In Structural Geology

ISBN: 9781405116527

3rd Edition

Authors: Stephen M. Rowland, Ernest M. Duebendorfer, Ilsa M. Schiefelbein

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