How is the Rock Mechanics helpful to the Mining Engineering?
[3 marks]List out the different methods used to measure the physio-mechanical properties of the rock.
[4 marks]Explain the elasticity, plasticity and Poisson’s ratio.
[7 marks]In a point load test on 50 mm diameter core specimen rupture was observed at a load of 6000 kg. Find out the point load strength of the specimen?
[3 marks]What is the difference between intact rock and rockmass?
[4 marks]What is tensile strength? Explain an indirect method of to measure it.
[7 marks]What is shear strength? Explain shear box test with a neat sketch.
[7 marks]What is creep?
[3 marks]How to measure the creep?
[4 marks]What is rheology? Explain any one rheological models.
[7 marks]Which are the factors influencing wave velocity?
[3 marks]Explain Young’s modulus and Modulus of Rigidity.
[4 marks]Explain the types of waves in dynamic properties of rock.
[7 marks]In a 150 cm rock core run, the following places were core recovered from a borehole: 5.3, 10.8, 12.5, 7.5, 14.8, 32.0, 6.8, 14.5, 3.5 and 13.4 cm. Find the RQD in percentage.
[3 marks]Write a short note mechanics of rock failure
[4 marks]Describe failure modes in rocks with neat sketch.
[7 marks]Explain : Porosity
[3 marks]Write a short note on Hoek and Brown criterion.
[4 marks]Explain Mohr-coulomb criterion of rock failure.
[7 marks]Explain in brief: RMR
[3 marks]Explain: Forces and displacement in cable bolting
[4 marks]What is RQD? Explain any once RQD system.
[7 marks]How to do the roof testing?
[3 marks]Explain: cable bolting
[4 marks]Write in detail the theory of reinforcement of rock mass by rock bolting.
[7 marks]