Issue |
E3S Web Conf.
Volume 195, 2020
4th European Conference on Unsaturated Soils (E-UNSAT 2020)
|
|
---|---|---|
Article Number | 02027 | |
Number of page(s) | 6 | |
Section | Teoretical and Numerical Models | |
DOI | https://doi.org/10.1051/e3sconf/202019502027 | |
Published online | 16 October 2020 |
Modelling free gas overpressure in peat layers
1 Delft University of Technology, Stevinweg 1 / PO-box 5048, 2628 CN, Delft, the Netherlands
2 Politecnico di Milano, piazza Leonardo da Vinci 32, 20133, Milano, Italy
* Corresponding author: S.Muraro@tudelft.nl
The paper assesses fully coupled hydro-mechanical numerical approaches developed for unsaturated soils to model the effect of free gas overpressure on the response of peat layers. A simple linear model is used for the soil skeleton, however, the global response is non-linear due to changes over time of the compressibility of the solid skeleton over the compressibility of the fluid, and solubility of gas in water. The overpressure generated in foundation peat layers by barometric pressure oscillations is modelled, and the results are compared to literature data. The development of pore overpressure upon unloading is analysed as a function of the soil skeleton compressibility, and the consequences on the average stress acting on the soil skeleton are discussed.
© The Authors, published by EDP Sciences 2020
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.