Question 7- Describe in as much detail as you can how rock mechanical properties are measured (cxperimental apparatus description) and how the failure cnvelope is constricted (method). [15 marks) Question 11 (20 marks) (Fig 5, Below) - a) How could two/three new or existing fractures simultaneously form (under perfect ideal cinditions) and/or move under these conditions. (lip, B) b) What are the resolved pormal and shear stresses on the faults and what angle do they make to draw sketch). c) mark faults on cylinder of rock [left below) oricntations where fractures cannot either form or slip 0 0. 30 Max 20 10 -ne of weakness MPa 10 40 Figure 5