Next Article in Journal
AC Electroluminescent Processes in Pr3+-Activated (Ba0.4Ca0.6)TiO3 Diphase Polycrystals
Next Article in Special Issue
A Constitutive Model for Soft Clays Incorporating Elastic and Plastic Cross-Anisotropy
Previous Article in Journal
Effect of Hydrogen Exposure on Mechanical and Tribological Behavior of CrxN Coatings Deposited at Different Pressures on IN718
Previous Article in Special Issue
Strain Localization of Elastic-Damaging Frictional-Cohesive Materials: Analytical Results and Numerical Verification
Article Menu
Issue 5 (May) cover image

Export Article

Open AccessArticle
Materials 2017, 10(5), 562; doi:10.3390/ma10050562

Modelling of Fluidised Geomaterials: The Case of the Aberfan and the Gypsum Tailings Impoundment Flowslides

1
Bundesanstalt für Materialforschung und-prüfung, Berlin 12167, Germany
2
Department of Applied Mathematics, ETSI Caminos, Universidad Politécnica de Madrid, Profesor Aranguren s/n, 28040 Madrid, Spain
3
INTECIN-CONICET-UBA-UNPSJB, Buenos Aires 1426, Argentina
4
College of Water Conservancy and Hydropower, Hohai University, Nanjing 210098, China
5
Consejo Superior de Investigaciones Científicas, Albasanz, 26-28, 28037 Madrid, Spain
*
Author to whom correspondence should be addressed.
Academic Editor: Miguel Cervera
Received: 22 February 2017 / Revised: 15 May 2017 / Accepted: 16 May 2017 / Published: 20 May 2017
(This article belongs to the Special Issue Computational Mechanics of Cohesive-Frictional Materials)
View Full-Text   |   Download PDF [31568 KB, uploaded 20 May 2017]   |  

Abstract

The choice of a pure cohesive or a pure frictional viscoplastic model to represent the rheological behaviour of a flowslide is of paramount importance in order to obtain accurate results for real cases. The principal goal of the present work is to clarify the influence of the type of viscous model—pure cohesive versus pure frictional—with the numerical reproduction of two different real flowslides that occurred in 1966: the Aberfan flowslide and the Gypsum tailings impoundment flowslide. In the present work, a depth-integrated model based on the v - p w Biot–Zienkiewicz formulation, enhanced with a diffusion-like equation to account for the pore pressure evolution within the soil mass, is applied to both 1966 cases. For the Aberfan flowslide, a frictional viscous model based on Perzyna viscoplasticity is considered, while a pure cohesive viscous model (Bingham model) is considered for the case of the Gypsum flowslide. The numerical approach followed is the SPH method, which has been enriched by adding a 1D finite difference grid to each SPH node in order to improve the description of the pore water evolution in the propagating mixture. The results obtained by the performed simulations are in agreement with the documentation obtained through the UK National Archive (Aberfan flowslide) and the International Commission of large Dams (Gypsum flowslide). View Full-Text
Keywords: SPH; landslide propagation modelling; Perzyna viscoplasticity; Aberfan flowslide; Gypsum tailings impoundment flowslide; fluidised behaviour SPH; landslide propagation modelling; Perzyna viscoplasticity; Aberfan flowslide; Gypsum tailings impoundment flowslide; fluidised behaviour
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Dutto, P.; Stickle, M.M.; Pastor, M.; Manzanal, D.; Yague, A.; Moussavi Tayyebi, S.; Lin, C.; Elizalde, M.D. Modelling of Fluidised Geomaterials: The Case of the Aberfan and the Gypsum Tailings Impoundment Flowslides. Materials 2017, 10, 562.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Materials EISSN 1996-1944 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top