The joint influence of cavities presence and rapid drawdown condition on discharge rate through earth dams

Al-Ateya, H and Ahangar Asr, A ORCID: https://orcid.org/0000-0002-8210-7519 2019, The joint influence of cavities presence and rapid drawdown condition on discharge rate through earth dams , in: 26th Annual Conference of the UK Association for Computational Mechanics (UKACM), 10-12 April 2019, City University London, UK.

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Abstract

Seepage measurement and control is one of the most significant considerations in designing and safety of earth dams. This numerical study aims to simulate the influence of cavities presence on seepage through earth dams taking into account rapid drawdown conditions. A series of two-dimensional finite element models were analysed using PLAXIS 2D software to examine the influence of various factors related to cavities which included (cavity shape and cavity position in horizontal and vertical directions). Hardening Soil and Mohr-Coulomb were adopted for modelling the behaviour of embankment and sub-soil. A single cavity in various position and depths in the subsoil of upstream and downstream slopes was considered in these simulations. The results of the analyses showed that the existence of cavities beneath the upstream side considerably increases the discharge rate through earth dam compared to their existence beneath downstream. The results of the numerical simulation also indicated that variation of the location of the cavities in the horizontal direction is more effective than the changes in position in the vertical direction, as well the cavity shape has an insignificant effect on flow rates through the dam.

Item Type: Conference or Workshop Item (Paper)
Schools: Schools > School of Computing, Science and Engineering > Salford Innovation Research Centre
Related URLs:
Depositing User: Dr Alireza Ahangar Asr
Date Deposited: 13 Nov 2019 08:20
Last Modified: 13 Nov 2019 08:20
URI: http://usir.salford.ac.uk/id/eprint/53017

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