The 7-day educational field trip “Pavlos Marinos” took place from February 3-9, 2025, as part of the 2024-2025 academic year of the Joint Postgraduate Program “Design and Construction of Underground Projects,” in which the School of Civil Engineering of NTUA participates. The title of the trip was “Tunnels and Underground Projects in Greece. Geology – Design – Construction.”
During its 25 years of operation, the program has trained almost the entire personnel involved in the design and construction of underground works, supplying highly skilled professionals to design, consulting offices, technical companies, public authorities and research organizations in Greece and abroad.
As part of the curriculum, training includes the unique 7-day educational field trip offering invaluable knowledge and hands-on experience. The field trip is named “Paul Marinos” in honour of the late Professor Emeritus of NTUA, Pavlos G. Marinos who organised and executed this field trip for almost 20 years. The scientific coordinator and leader of the educational field trip is As. Professor Vasilis P. Marinos of our School of Civil Engineering NTUA and President of the International Association for Engineering Geology and the Environmennt (IAEG).
This unforgettable field trip is a highly significant complement to the educational cycle of many courses within the postgraduate programme, providing students with real-life experience to underground works under construction and in operation. These firsthand experiences enhance the assimilation of essential knowledge acquired in the classroom.
Postgraduate students are trained directly at tunnel faces and portals of underground works and tunnels under construction in Peloponnese, Central and Northern Greece. They evaluate a wide range of engineering geological conditions in different environments and the corresponding uncertainties affecting underground works design. They apply their skills in real-world conditions, gain invaluable hands-on experience and give daily presentations on various topics.
Within the framework of the field trip, the following activities are carried out:
- Technical visits to major projects under construction (Mpralou Tunnel, Kleisoura Tunnel, underground works at Hellas Gold mines, the lignite mine of Prosiliou, underground and other projects of the Amphilochia pumping-storage system, Metsovitiko DEI projects, Sitara 1 & 2 tunnels, mining excavations, bridges and the northern section of the central road E65), exploration of a multitude of excavation methods, cross-sectional analyses, temporary support measures and the geotechnical challenges and solutions associated with them.
- A series of on-site classes and field exercises in the natural geoenvironment (~12-15 exercises) (e.g., quantitative characterization, rock mass classifications, preparation of engineering geological sections, simple calculations for estimating settlements and support measures, assessment of failure mechanisms, etc.). The range of geotechnical conditions across different geoenvironments and the associated uncertainties in the design of underground works are analyzed.
- Visits and the gathering of experiences from major underground works in our country, both under construction and in operation (Knimida, Kallidromo, Tempi, Platamon and Egnatia Highway tunnels).
- Students are divided into groups according to the technical aspects of the field trip and present each evening on the underground works they visited the previous day.
For the educational purposes of the field trip, specialized volumes are prepared and distributed to students, containing excerpts from studies, reports and published papers related to the projects being visited.
We would like to thank the companies TERNA S.A., AKTOR S.A., AVAX S.A., Hellas Gold S.A., Aegean Motorways, METE S.A., and OLYMPIA ODOS S.A. for the opportunity to visit their projects, as well as for their significant sponsorships.
Special mention and thanks for their significant help in organizing the field trip are due to the PhD Candidates from the Geotechnical Division, Themistoklis Chatzitheodosiou and Dimitris Pepas.
The scientific coordinator and leader of the educational field trip is As. Professor Vasilis P. Marinos of the School of Civil Engineering NTUA and President of the International Association for Engineering Geology and the Environment (IAEG). The trip was accompanied by Dr. Vivy Yiouta Mitra, from the School of Mining and Metallurgical Engineering.

Thank you banner of 7-day field trip(“Paul Marinos” field trip) for the MSc in Tunnelling Engineering of NTUA for the academic year 2024-2025