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Performance of filter drains under large embankment loads

A testing apparatus was developed for the determination of the change in
permeability of coarse porous media subjected to a decrease in porosity
.
literature survey was conducted to establish the design criteria for the
flow and loading tests. The mthemaUcal model describing flow through
course porous media was further developed on a theoretical basis by
postulating the layered medium model. Ihis model is a means by which
the variability of the particle sizes in the medium is taken into
account.
The design, construction and operation of the testing apparatus is
des:rvx-d. The specimen tested was laded up uo 3,45 MPa; consequently
'
the Fbrcheimer aquation in the form of K , Ci/R + Cg was found to
yield repeatable values for tiic turbulent friction factor C2, thus
providing a means of predicting the change in permeability if the change
in porosity and effective particle diameter are known.

Identiferoai:union.ndltd.org:netd.ac.za/oai:union.ndltd.org:wits/oai:wiredspace.wits.ac.za:10539/18591
Date09 September 2015
CreatorsRumpelt, Thomas Karl
Source SetsSouth African National ETD Portal
LanguageEnglish
Detected LanguageEnglish
TypeThesis
Formatapplication/pdf, application/pdf

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