Principles of Rock Mechanics
Overall Course Objectives
To obtain an integrated knowledge related to physical and mechanical rocks properties in order to a) carry out classification and basic field- and laboratory testing and b) analyse and evaluate the obtained results for applications in simple constructions.
See course description in Danish
Learning Objectives
- Describe processes of rock formation and perform geological classification of most common rock types
- Calculate physical classification parameters and index properties of an intact rock, such as porosity, density, permeability, slaking and durability, sonic velocity
- Analyse and evaluate laboratory test results used to measure stress-strain properties
- Describe different modes of failure and stress-strain behaviours for intact rock and identify adequate failure criteria
- Describe effects of discontinuities and joints in a rock mass and related parameters, such as orientation, testing, roughness, spacing, persistence, the effect of water pressure, flow and wave transmission
- Calculate parameters describing rock mass properties, such as rock quality designation, Q-System, rock mass rating, geological strength index
- Calculate initial field stresses for a rock mass based on the most common techniques
- Calculate slope stability by equilibrium analysis
- Calculate slope stability to sliding based on stereographic projections
Course Content
1) Nature of rocks and intact index properties: geological classification, porosity, density, permeability, slaking, durability, sonic velocity.
2) Thermo-mechanical properties of intact rock: (i) stress-strain properties (linear and nonlinear elasticity, isotropy and anisotropy, inelastic behavior, lab measurement techniques); (ii) Thermal properties; and (iii) Strength properties (failure modes, fracture, common strength tests, Mohr-Coulomb, Griffith and von Mises, Hoek-Brown, effect of water, size effect, anisotropy)
3) Joints and discontinuities: orientation, testing, roughness, spacing, persistence, the effect of water pressure, flow and sound wave transmission.
4) Rock mass classification: rock quality designation, Q-System, rock mass rating, geological strength index.
5) In situ stresses and rock mass characterization: influence and estimation, field measurement techniques
6) Slope engineering: modes of failure of slope in hard rock, rack-fall analysis, analysis of plane sliding of the stereographic projection, analysis of wedge sliding using stereographic projection, analysis of slides composed of two blocks.
Recommended prerequisites
12411, Basic material properties: density, strength, stiffness
Teaching Method
Lectures, case studies and exercises
Faculty
Limited number of seats
Minimum: 10.
Please be aware that this course will only be held if the required minimum number of participants is met. You will be informed 8 days before the start of the course, whether the course will be held.