Projets de master ouverts à LMS

Ce projet de Master porte sur l’analyse sismique avancée des bâtiments existants, avec une attention particulière portée à l’interaction sol-structure (ISS). Bien que souvent négligée dans les méthodes d’évaluation classiques, l’ISS peut avoir un impact décisif dans certaines applications spécifiques — notamment en présence de sols meubles ou pour des structures flexibles. Le projet vise à identifier ces cas critiques et à développer des approches de modélisation plus précises intégrant les effets de l’ISS. En combinant revue bibliographique, modélisation numérique et étude de cas ciblée, ce travail cherche à clarifier quand et comment l’ISS doit être prise en compte afin d’améliorer la fiabilité des évaluations de vulnérabilité sismique et de guider les stratégies de renforcement appropriées.

Contactez: Dr. Aldo Madaschi ([email protected])

The long-term performance and sustainability of ground source heat pump (GSHP) systems depend on a precise understanding of the thermal interactions between borehole heat exchangers (BHEs) and the surrounding subsurface. Conventional numerical simulation models, although accurate, are computationally intensive, expensive to calibrate to real operational conditions, and impractical for real-time performance evaluation and decision-making. This thesis aims to develop a data-driven predictive modelling framework based on machine learning to estimate the thermal behaviour of geothermal borehole fields under real operating conditions. Using data collected from instrumented pilot installations the model will learn the relationships between key variables, forecast system performance over time, and detect trends associated with underuse or thermal depletion of the resource. Different machine learning architectures (e.g., ANN, LSTM etc..) will be tested and compared using metrics such as MAE and RMSE, in order to optimize predictive accuracy and robustness. The results will provide a scientific basis for integrating predictive models into decision-support tools enhancing operational efficiency of GSHP systems throughout their lifecycle.

Supporting documentation

Contact: Dr. Elena Ravera ([email protected])

Underground geo-energy and geo-environmental applications—such as H₂ storage, CO₂ storage, and nuclear waste disposal—critically depend on the ability to predict pore fluid pressure changes. Pressure build-up or depletion directly controls the effective stress state, influencing the risk of shear failure, caprock damage and induced seismicity. Building on previous work on gas–water coupling, this project will develop a framework to model pore pressure evolution under different operational and geological scenarios. Using these predictions, the student will analyse the resulting effective stress changes and derive corresponding stress paths.

The student will:
(i) review pore pressure generation mechanisms;
(ii) implement a poro-mechanical model (MATLAB or Python) to simulate pressure build-up and depletion; (iii) translate predicted pore pressures into effective stress evolution;
(iv) compare representative scenarios such as H₂ storage, CO₂ storage, or gas generation in nuclear waste repositories.

This project offers hands-on exposure to real scenarios relevant for the energy transition and underground storage safety. Analytical skills and basic programming experience (MATLAB or Python) are required for this project.

Lab / Supervisor
Laboratory of Soil Mechanics (LMS), Dr. Angelica Tuttolomondo, Prof. Lyesse Laloui
Area of research
Geomechanics / Energy Geotechnics
Type of work
Analytical / Computational
N spots offered 1–2

Contact: Dr. Angelica Tuttolomondo ([email protected])

Ce projet de Master porte sur l’analyse sismique avancée des bâtiments existants, avec une attention particulière portée à l’interaction sol-structure (ISS). Bien que souvent négligée dans les méthodes d’évaluation classiques, l’ISS peut avoir un impact décisif dans certaines applications spécifiques — notamment en présence de sols meubles ou pour des structures flexibles. Le projet vise à identifier ces cas critiques et à développer des approches de modélisation plus précises intégrant les effets de l’ISS. En combinant revue bibliographique, modélisation numérique et étude de cas ciblée, ce travail cherche à clarifier quand et comment l’ISS doit être prise en compte afin d’améliorer la fiabilité des évaluations de vulnérabilité sismique et de guider les stratégies de renforcement appropriées.

Contactez: Dr. Aldo Madaschi ([email protected])

In situ stress is essential for underground engineering applications such as CO₂ and H₂ storage or deep waste repositories. While several methods provide quality indicators for stress orientation, no standard criteria exist to evaluate the reliability of stress magnitudes. This gap limits the interpretation of stress data and affects decision-making in geo-engineering. This project will develop a robust framework to quantify, classify and communicate uncertainties associated with stress magnitude estimates, independent of the measurement technique.

The student will:
(i) review existing stress measurement methods and quality indicators;
(ii) identify key uncertainty sources affecting stress magnitude assessments;
(iii) develop analytical (MATLAB/Python) or numerical (COMSOL) sensitivity models to quantify uncertainty propagation;
(iv) proposes a Quality Indicator System for Stress Magnitudes (QISM) including uncertainty windows and robustness criteria;
(v) test the framework on synthetic or publicly available datasets.

This project tackles a recognized scientific gap in geomechanics and offers the student the opportunity to contribute to a topic of high relevance in underground engineering. Analytical skills and basic programming experience (MATLAB or Python) are required.
Lab / Supervisor
Laboratory of Soil Mechanics (LMS), Dr. Angelica Tuttolomondo, Prof. Lyesse Laloui
Area of ​​research
Geomechanics / Energy Geotechnics
Type of work
Analytical / Computational
N spots offered
1–2

Contact:  Dr. Angelica Tuttolomondo ([email protected])

The IS-E experiment at the Mont Terri Rock Laboratory (300 m depth) will deliver a unique in situ stress dataset collected in several boreholes using an innovative stress-measurement approach recently developed at the Laboratory of Soil Mechanics (LMS). These data will become available in early 2026, offering a rare opportunity to analyze high-quality field measurements from a world-class underground research facility. The objective of this project is to support the post-processing and scientific interpretation of these measurements and to contribute to the development of a robust and consistent data-analysis workflow.
The student will:
(i) review the fundamentals of in situ stress measurements;
(ii) organize and post-process the incoming field dataset;
(iii) develop MATLAB/Python routines;
(iv) compare results across depths and borehole orientations;
(v) assist in integrating the findings into the wider Mont Terri stress-assessment framework. Analytical skills and basic programming experience (MATLAB or Python) are required.

Lab / Supervisor
Laboratory of Soil Mechanics (LMS), Dr. Angelica Tuttolomondo, Prof. Lyesse Laloui

Area of ​​research
Geomechanics / In Situ Testing / Data Analysis

Type of work
Analytical / Computational / Data Processing

N spots offered
1

Contact:  Dr. Angelica Tuttolomondo ([email protected])

Developing quality indicators for stress magnitude determination in deep in situ stress measurements

Monitoring technologies used in CO₂ storage (e.g., seismic surveys) struggle to detect near-well plume evolution at the meter scale. Distributed fiber-optic strain sensing (FODSS) offers a transformative opportunity for high-resolution, low-cost monitoring, but an inversion framework is required to translate measured strain curves into 3D CO₂ plume geometry.

Finite Element Method (FEM) simulations can reproduce the hydromechanical response of reservoir materials to CO₂ injection and generate large datasets of synthetic strain fields. These can be combined with machine learning (ML) to derive an inversion model that predicts plume location from FODSS signals, a crucial step toward developing a deployable monitoring tool.

Supervisor: Prof. Lyesse Laloui
Assistants: Dario Sciandra, Eleni Stavropoulou

Further information: Project proposal (PDF)

Contacts:

Dario Sciandra
[email protected]
GC D1397
+41 77 232 74 49

Lyesse Laloui
[email protected]
Tel.: [+41 2169] 32314