Print Email Facebook Twitter Sequential reduction of slope stability uncertainty based on temporal hydraulic measurements via the ensemble Kalman filter Title Sequential reduction of slope stability uncertainty based on temporal hydraulic measurements via the ensemble Kalman filter Author Liu, K. (TU Delft Geo-engineering) Vardon, P.J. (TU Delft Geo-engineering) Hicks, M.A. (TU Delft Geo-engineering) Date 2018-03-01 Abstract A data assimilation framework, utilising measurements of pore water pressure to sequentially improve the estimation of soil hydraulic parameters and, in turn, the prediction of slope stability, is proposed. Its effectiveness is demonstrated for an idealised numerical example involving the spatial variability of saturated hydraulic conductivity, ksat. It is shown that the estimation of ksat generally improves with more measurement points. The degree of spatial correlation of ksat influences the improvement in the predicted performance, as does the selection of initial input statistics. However, the results are robust with respect to moderate uncertainty in the spatial and point statistics. Subject Data assimilationEnsemble Kalman filterFinite elementsRandom fieldsSlope reliabilitySpatial variability To reference this document use: http://resolver.tudelft.nl/uuid:1a986844-69b7-4445-941e-4420ac3c190e DOI https://doi.org/10.1016/j.compgeo.2017.09.019 Embargo date 2018-09-01 ISSN 0266-352X Source Computers and Geotechnics, 95, 147-161 Bibliographical note 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. Part of collection Institutional Repository Document type journal article Rights © 2018 K. Liu, P.J. Vardon, M.A. Hicks Files PDF 1_s2.0_S0266352X17302653_main.pdf 2.22 MB Close viewer /islandora/object/uuid:1a986844-69b7-4445-941e-4420ac3c190e/datastream/OBJ/view