Stability of underground rooms and facilities

The aim of the course is to introduce mining students to the basic methods and techniques of dimensioning underground rooms and facilities with the aim of long-term stability and successful exploitation of mineral raw materials.

Students will get acquainted with the methods for assessing the stability of underground rooms and buildings, which today represents the scientific basis for designing, constructing buildings and exploitation. The course will provide the listeners with an understanding of the issue of the mutual influence of the working environment (rock) and exploitation, that is, determining the basic properties as a starting point for all further mining activities.

1. Getting to know the methods for evaluating the stability of underground rooms and buildings. 2. Voltage state in the rock massif near the underground rooms, state and influence of mining works on the rock material. 3. Voltage condition around vertical underground rooms (manholes). 4. Voltage condition around underground corridors, voltage concentration near underground rooms. 5. Methods of stability analysis of mining facilities - underground facilities. 6. The pressure of the rock massif on the subgrade of the underground rooms.7. Static pressure of the rock mass on the subgrade of the underground rooms. 8. Deformation pressure of the rock massif. 9. Determining the load on the foundation. 10. Basics of mechanical models of substructure and rock massif. 11. Basics of the theory of hereditary flow. 12. Mutual influence of the working environment (rock) and exploitation. 13. Stress condition in the rock massif around exploitation excavations, basic characteristics of changes in the rock massif around the wide face. 14. Overview of theories about the cause of the emergence of exploitation pressure. 15. Voltage state in the rock massif around exploitation excavations, stability of chamber excavation methods.

1. P. Milanović: "Rock mechanics - special chapters", Faculty of Mining and Geology, 1985.

2. I. Jašarević: "Rock mechanics, foundations, underground works", book 1 and 2, IT, Zagreb, 1983.

3. E. Hoek “Practical Rock Engineering (2000ed.)”http://www.rocscience.com/hoek/PracticalRockEngineering.asp

4. E. Hoek, P.K. Kaiser, W.F. Bawden: “Support of Underground Excavations in Hard Rock”, A.A Balkema, 1995.

Attendance and activity in classes, writing a seminar paper, taking tests and taking the final exam.

Teaching takes place through theoretical lectures, computational exercises, preparation of seminar work and colloquiums/tests. Consultations with a teacher and an assistant are also provided for students as an additional form of learning.