| Issue |
E3S Web of Conf.
Volume 382, 2023
8th International Conference on Unsaturated Soils (UNSAT 2023)
|
|
|---|---|---|
| Article Number | 24006 | |
| Number of page(s) | 6 | |
| Section | Long-Term Measurements of Suction in the Field and their Relation to Climatic Parameters - Part II | |
| DOI | https://doi.org/10.1051/e3sconf/202338224006 | |
| Published online | 24 April 2023 | |
Field monitoring of the water pressure and displacement of a partially saturated expansive marl under an unloading stress path due to deep excavation
1 Egis, Segment Géotechnique, 3 Rue du docteur Schweitzer, 38180, Seyssins, France
2 Univ. Grenoble Alpes, CNRS, Grenoble INP, 3SR, F-38000, Grenoble, France.
* Corresponding author: missom.ouedraogo@egis-group.com
This paper presents, an in situ monitoring of the behaviour of a partially saturated soil, subjected to an unloading stress path resulting from excavations. The study case is a 30m deep excavation for the construction of a metro station, The aim of the study is to monitor the evolution of displacements and pore pressure during and after the different stages of excavation. The monitored soil is an expansive marl. The first results have been collected and analysed. Nevertheless the monitoring system should remain in place for a few years.
© The Authors, published by EDP Sciences, 2023
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