Options for the Implementations of Data Assimilation for Geotechnics

Options for the Implementations of Data Assimilation for Geotechnics

Mohsan, M. (TU Delft Reservoir Engineering)
Vardon, P.J. (TU Delft Geo-engineering)
Vossepoel, F.C. (TU Delft Reservoir Engineering)

Barla, Marco (editor)
Insana, Alessandra (editor)
Di Donna, Alice (editor)
Sterpi, Donatella (editor)

2023

Data assimilation methods have been implemented on a slope stability problem, and the performance of different constitutive models and data assimilation schemes has been investigated. In the first part, a data assimilation scheme called the ensemble Kalman filter (EnKF) is implemented using a finite element model (FEM) and its performance with different constitutive models (the Mohr-Coulomb (MC) and Hardening Soil (HS) material models) is investigated to study their effect on the parameter and the factor of safety (FoS) estimation. Measurements of horizontal displacement are assimilated. The results from a synthetic example show that the HS model can generally be used to get reliable results for parameter and FoS estimation. However, using the MC model does not always output reliable parameter and FoS estimation. In the second part, the performance of different data assimilation schemes, i.e., the EnKF and ensemble smoother with multiple data assimilation (ESMDA), is studied with the preferred constitutive material model (the HS model). The results of a synthetic case show that the EnKF results in a narrower distribution for the FoS than the ESMDA method, while the latter results in FoS estimation which is closer to the ‘truth’.

Slope stability
Data assimilation
Constitutive models
Ensemble Kalman filter
Ensemble smoother

http://resolver.tudelft.nl/uuid:00f081a8-5560-467f-b95d-ab59e025b93e

https://doi.org/10.1007/978-3-031-12851-6_31

Springer

2023-01-31

9783031128509

Challenges and Innovations in Geomechanics: Proceedings of the 16th International Conference of IACMAG, 3

6th International Conference of the International Association for Computer Methods and Advances in Geomechanics, IACMAG 2022, 2022-08-30 → 2022-09-02, Turin, Italy

Lecture Notes in Civil Engineering, 2366-2557, 288

Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.

Institutional Repository

conference paper

© 2023 M. Mohsan, P.J. Vardon, F.C. Vossepoel