Rock Mechanics
Get the full GTU study material for this subject: official syllabus, textbook links (Gujarati-medium books included where available), and previous year question papers.
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The official GTU curriculum for Rock Mechanics (subject code 4352203) as prescribed for Mining · Semester 5 divides the course into 5 units, covering 19 listed topics. This curriculum applies from the July-2023 intake. The unit-wise breakdown below is read from the GTU syllabus document for this subject code, so you can check what the course actually covers before deciding which papers to attempt.
Download the official syllabus PDF (4352203)Unit 1 Introduction & Rock Exploration
- 1.1. Rock Mechanics - definition & its scope in mining field.
- 1.2. Rock- its mass & material form; defects in rock mass with its effects.
- 1.3. Rock Exploration- its objectives to get sub surface information
- 1.3.1. Rock exploration by direct penetration- core boring, core recovery, Rock quality designation (RQD)- its determination, fracture frequency, core logging, & large diameter calyx hole.
Unit 2 Rock Properties
- 2.1. Physical properties of rock: Porosity, Density, Moisture content, Coefficient of permeability, Electrical properties, Thermal properties, Swelling, Anisotropy, Durability, & Degree of saturation.
- 2.2. Mechanical properties of rock: Strength - Compressive strength, Tensile strength, & Shear strength; Deformability; Elasticity; Plasticity; Poisson’s ratio & Hardness with its Mohr’s scale.
Unit 3 Rock Pressure & Its failure
- 3.1. Stresses involved in mining with its different types.
- 3.2. Pressure arch theory- Distribution of various stresses around mine openings: Rectangular opening, Circular shaft, & Long wall panel working.
- 3.3. Rock failure- Creep, Convergence, Rock burst, & coal bumps with its drilling yield test.
Unit 4 Rock Testing
- 4.1. Sampling, Sample preparation, & Specimen.
- 4.2. Compressive Strength Tests- Uniaxial compressive strength test: Impact Strength Index, Protodykanov’s strength index Rock Mechanics Course Code: 4352203
- 4.3. Tensile Strength Tests- Brazilian tests; Bending tests; & Flexural strength test both Three -point & Four-point load test.
- 4.4. Shear Strength Tests- Shear box test, Block shear test, & Punch shear test.
- 4.5. Rock durability test
- 4.6. In Situ tests-
- 4.5.1. Roof Load Measurement by Flat jack & load cells;
- 4.5.2. Rock Deformation Measurement- Roof Sag Measurement by using Extensometer; Strain measurement by Strain gauges; Stress measurement by Flat jack
Unit 5 Rock Mass Classification, Support requirement & Subsidence
- 5.1. Rock Mass Classification – its objectives, engineering classification of intact rock mass given by Deer & Miller; geomechanics classification of jointed rock mass & requirement of supports depending on rock mass rating (RMR).
- 5.2. Subsidence- Elements of subsidence: Subsidence factor, Angle of draw, line of break; Critical area, Sub-critical area, Super critical area, factors governing subsidence & protective measures against Subsidence.
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