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Geomechanics

General data

Course ID: 1300-OGMK4C
Erasmus code / ISCED: 07.304 Kod klasyfikacyjny przedmiotu składa się z trzech do pięciu cyfr, przy czym trzy pierwsze oznaczają klasyfikację dziedziny wg. Listy kodów dziedzin obowiązującej w programie Socrates/Erasmus, czwarta (dotąd na ogół 0) – ewentualne uszczegółowienie informacji o dyscyplinie, piąta – stopień zaawansowania przedmiotu ustalony na podstawie roku studiów, dla którego przedmiot jest przeznaczony. / (0532) Earth science The ISCED (International Standard Classification of Education) code has been designed by UNESCO.
Course title: Geomechanics
Name in Polish: Geomechanika
Organizational unit: Faculty of Geology
Course groups: (in Polish) Przedmioty obowiązkowe na IV r. studiów I st. na kierunku geologia stosowana na specjalizacji GS
ECTS credit allocation (and other scores): 2.00 Basic information on ECTS credits allocation principles:
  • the annual hourly workload of the student’s work required to achieve the expected learning outcomes for a given stage is 1500-1800h, corresponding to 60 ECTS;
  • the student’s weekly hourly workload is 45 h;
  • 1 ECTS point corresponds to 25-30 hours of student work needed to achieve the assumed learning outcomes;
  • weekly student workload necessary to achieve the assumed learning outcomes allows to obtain 1.5 ECTS;
  • work required to pass the course, which has been assigned 3 ECTS, constitutes 10% of the semester student load.
Language: Polish
Type of course:

obligatory courses
Prerequisites (description):

The student should possess knowledge in:

- geodynamic processes,

- ability to recognize minerals and rocks,

- ability to map and interpret thematic maps,

- numerical modelling,

- fundamentals of statistics.
Short description:

Geomechanical properties of rocks and rock massifs. Systems of indexes used to describe rock massif properties (RQD, Q, GSI, JCR). Types and range of stability threats, range of geoenvironmental transformation of rock massifs and problems of integrity in surface objects. Stages and aims of recognizing surface and underground geological-engineering conditions. Geomechanical properties of rock massifs and rocks. Primary and secondary stress. Fundamentals of elasticity, plasticity and brittle fracturing. Fundamentals of assessing stress state around underground engineering excavations. In situ and drillcore investigations, ‘breakout’ method, strength and ultrasonic laboratory investigations. Subsidence basins above mine excavations, depressions, floodings. Technical methods of preventing natural and anthropogenic hazards in rock massifs on the surface, in the sub-surface zone and on large depths. Geothermal energy.
Full description:

Classes schedule:

1. Introduction. “Soil” – “rock”. Characteristics of rocks and rock massifs. Field investigations.

2. Physical properties of rocks.

3. Non-destructive methods – ultrasonic investigations.

4. Destructive methods. Types of strength investigations. Uni-axial stress: strength to uni-axial stress and Young’s modulus. Uni-axial stretching (Brazilian method) – strength to stretching.

5. Integrity. Characteristics of weathering processes and degradation mechanisms in rocks. Description of methods modelling long-term destructive processes.

6. Classification of rock massifs (Bieniawski – RMR, Barton – Q, Hoek – GSI).

7. Destruction criteria: Coulomb-Mohr failure criterion, Hoek-Brown criterion and generalized Hoek-Diederichs formula.

8. Based on the Hoek-Brown criterion, determination of rock massif parameters (mb, s and a), rock massif deformation modulus and Coulomb-Mohr parameters (c and ).

9. Parametric analysis of the changes in stress distribution in rock massifs during construction of excavation using the finite-elements method.

10. Determining the influence of tunnel geometry on stress distribution and visualization of stress distribution around excavation.
Bibliography: (in Polish)

Z. Glazer, J. Malinowski. 1991. Geologia i geotechnika dla inżynierów budownictwa. PWN Warszawa.

E. Hoek. 2007. Practical Rock Engineering

J. Pinińska (Red.). 2009. Baza danych geomechanicznych właściwości skał. Zakład Geomechaniki UW. Warszawa.
Learning outcomes:

On completion of the course, the student:

- makes assessment of a rock massif,

- calculates the physical parameters of rocks,

- calculates the strength to uni-axial stress and Young’s modulus,

- interprets the degree of degradation of rocks,

- determines integrity and calculates the changes,

- understands deterioration mechanisms and describes them using a mathematical apparatus.
Assessment methods and assessment criteria:

Final written assessment.
Practical placement: (in Polish)

brak

Classes in period "Winter semester 2023/24" (past)

Time span: 2023-10-01 - 2024-01-28
Selected timetable range:
Navigate to timetable
Type of class:
Classes, 30 hours, 17 places more information
Coordinators: Andrzej Domonik
Group instructors: Andrzej Domonik
Students list: (inaccessible to you)
Examination: Course - Grading
Classes - Grading
Course descriptions are protected by copyright.
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