Influence of the Anisotropy of the Material on the Pore Water Pressures within the Downstream Shell of a Rockfill Dam in Overtopping Scenario

Díaz, Juan Carlos and Toledo Municio, Miguel Ángel and Morán Moya, Rafael (2018). Influence of the Anisotropy of the Material on the Pore Water Pressures within the Downstream Shell of a Rockfill Dam in Overtopping Scenario. In: "3rd International Conference on Protection against Overtopping", 6-8 Junio, 2018, Grange-over-Sands, Reino Unido. pp. 1-7.

Description

Title: Influence of the Anisotropy of the Material on the Pore Water Pressures within the Downstream Shell of a Rockfill Dam in Overtopping Scenario
Author/s:
  • Díaz, Juan Carlos
  • Toledo Municio, Miguel Ángel
  • Morán Moya, Rafael
Item Type: Presentation at Congress or Conference (Other)
Event Title: 3rd International Conference on Protection against Overtopping
Event Dates: 6-8 Junio, 2018
Event Location: Grange-over-Sands, Reino Unido
Title of Book: Proceedings of the 3rd International Conference on Protection against Overtopping
Date: 2018
Subjects:
Faculty: E.T.S.I. Caminos, Canales y Puertos (UPM)
Department: Ingeniería Civil: Hidráulica, Energía y Medio Ambiente
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

The compaction tasks developed during the construction of the shell of rockfill dams may crush the particles of the material close to each surface layer. If so, this can cause local variations in the permeability of the material and con-sequently an alteration of the hydraulic pattern of the seepage through the shell as well as the pore water pressures developed within it. This article summarizes the study of this effect through hydraulic numerical modelling devel-oped by the FLOW-3D commercial code. Such study presents a discussion about the influence of the altered and un-altered zones of the layers on the general flow pattern, particularly in the downstream water level depths, hydraulic gradients and pore water pressures. The tests have been set up with a non-laminar seepage equation using a parabolic relation between hydraulic gradient and seepage velocity. The numerical models simulate homogeneous rockfill formed by isotropic layers with different permeability, which result in an overall anisotropic dam body.

Funding Projects

TypeCodeAcronymLeaderTitle
Government of SpainBIA2010-21350-C03-03UnspecifiedUnspecifiedRotura del elemento impermeable de presas de materiales sueltos en situación de sobrevertido y análisis de protecciones combinando modelación física e inteligencia artificial

More information

Item ID: 52547
DC Identifier: http://oa.upm.es/52547/
OAI Identifier: oai:oa.upm.es:52547
Deposited by: Memoria Investigacion
Deposited on: 17 Oct 2018 10:35
Last Modified: 17 Oct 2018 12:34
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