Download GTU BE/B.Tech 2019 Winter 5th Sem New 2152204 Rock Mechanics Question Paper

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GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER- V (New) EXAMINATION - WINTER 2019

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Instructions:

1. Attempt all questions.

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2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.

MARKS

1. (a) Differentiating between soil and rock. 03
   (b) What is rock mechanics? How it would helps in mining? 04
   

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   (c) Explain in detail: Types of waves. 07
2. (a) Explain: Hooke’s law 03
   (b) Draw stress-strain curve and do brief analysis of it. 04
   (c) Explain: Uniaxial compressive strength 07
   OR
   

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   (c) Explain: Brazilian test with its ISRM standards. 07
3. (a) Explain: Thermal properties rock 03
   (b) Explain: Density 04
   (c) Explain any one method for determination of permeability of rock. 07
   OR
   

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   (a) Explain: Anisotropy of rock 03
   (b) Explain: Porosity 04
   (c) Explain: Tri-axial compressive strength 07
4. (a) Types of failure. 03
   (b) Explain: Hardness with Mohr’s scale of hardness of minerals. 04
   

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   (c) Explain the Griffith’s theory of fracture. 07
   OR
   (a) What is creep? Explain with sketch. 03
   (b) Explain: Modulus of elasticity and modulus of rigidity. 04
   (c) Explain: Mohr’s and coulomb theories of rock failure. 07

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5. (a) Explain: Classification of engineering soil. 03
   (b) Explain with sketch flat jack technique. 04
   (c) What are the physical properties soils? Explain each in brief. 07
   OR
   (a) How is groundwater influence on rock and soil? 03
   

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   (b) Explain the technique to measure the ground water flow in a rock 04 mass.
   (c) What is rheology? Explain any one model of it. 07

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