Design Charts for Contaminant Transport through Slurry Trench Cutoff Walls
Publication: Journal of Environmental Engineering
Volume 143, Issue 9
Abstract
Slurry trench cutoff walls with low-permeability backfill material, such as soil-bentonite and slag-cement-bentonite, are used widely for containment of subsurface pollution. In the design of slurry walls the potential service life for a given thickness or the wall thickness for a target service life are typically determined via analyses of one-dimensional contaminant transport. The difficulty of selecting appropriate inlet and outlet boundary conditions and the mathematical complexity of analytical solutions hinder engineers in undertaking a contaminant transport analysis–based design. Design charts for nondimensionalized effluent flux are presented by developing and using an analytical solution. The methodologies of using these charts in design are demonstrated.
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Acknowledgments
The financial support received from the National Natural Science Foundation of China (NSFC) by way of Grant Nos. 51378465 and 41672284 and the Science Technology Department of Zhejiang Province by Grant No. 2016C31G2010015 is gratefully acknowledged.
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Published In
Journal of Environmental Engineering
Volume 143 • Issue 9 • September 2017
Copyright
©2017 American Society of Civil Engineers.
History
Received: Jun 14, 2016
Accepted: Feb 28, 2017
Published online: May 27, 2017
Published in print: Sep 1, 2017
Discussion open until: Oct 27, 2017
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