73268 - Underground Constructions M

Academic Year 2024/2025

  • Teaching Mode: Traditional lectures
  • Campus: Bologna
  • Corso: Second cycle degree programme (LM) in Environmental Engineering (cod. 8894)

    Also valid for Second cycle degree programme (LM) in Civil Engineering (cod. 0930)

Learning outcomes

The course aims to provide the basic principles of rock mechanics for the characterization of rock masses in underground excavations and to develop the skills needed for the design, construction, and monitoring of tunnels in both soil and rock masses.

Course contents

Geotechnical description and classification of rocks: Characteristics of rock material; characteristics of discontinuities; technical classifications of rock masses; use of stereographic projections in rock mechanics.

Strength and deformability of rocks: Laboratory tests for strength and deformability; strength, deformability, and permeability of rocks, discontinuities, and rock masses.

Excavation technologies for underground construction: Excavations with drilling and blasting; mechanical excavation in rocks and soils; support and reinforcement interventions; soil improvement for tunnel excavation.

Tunnel design: Circular tunnel in an elastic medium; non-circular tunnel in an elastic medium; influence of elastic anisotropy of the ground; circular tunnel in an elasto-plastic medium; tunnel below the water table; analysis of face conditions; interaction between ground and lining; stability condition verification.

Readings/Bibliography

Ribacchi R., Rotonda T., Graziani A., Boldini D., Tommasi P., Lembo-Fazio A. (2018). Meccanica delle Rocce. Teoria e Applicazioni nell’Ingegneria. Edizioni Efesto e Hevelius Edizioni.

Teaching methods

Class lessons and worked examples.

Assessment methods

The examination consists of an oral test in which theoretical aspects covered during the course are discussed, and practical knowledge related to the exercises is assessed.

Higher grades will be awarded to students who can demonstrate an organic understanding of the subject, a capacity of presenting the course contents in a clear and concise way and an ability of critically discussing the results achieved. To obtain a passing grade, students are required to show their knowledge of at least the key concepts of the subject, some ability for their critical application and a correct use of technical language. A failing grade will be awarded if the student shows knowledge gaps in key-concepts of the subject, inappropriate use of language, and/or logic failures in the analysis of the subject.

Office hours

See the website of Alessio Mentani