Settling Distance and Incipient Motion of Sandbags in Open Channel Flows
Publication: Journal of Waterway, Port, Coastal, and Ocean Engineering
Volume 130, Issue 2
Abstract
This study is concerned with two hydrodynamic parameters that are essential for the construction of submerged dikes in rivers with sand-filled geosynthetic bags. First, laboratory study and field observation are conducted to investigate the horizontal settling distance of sandbags in open channel flows. Sandbag models used for laboratory tests are prepared according to similarity requirements. An analytical formula for evaluating the settling distance is then derived based on the experimental data. The predictions are then compared to the field measurements. The observed settling distance varies significantly and its probability density distribution is positively skewed. This study also presents a formula for computing the critical flow velocity at incipient sandbag motion for two extreme conditions.
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Information & Authors
Information
Published In
Journal of Waterway, Port, Coastal, and Ocean Engineering
Volume 130 • Issue 2 • March 2004
Pages: 98 - 103
Copyright
Copyright © 2004 American Society of Civil Engineers.
History
Received: Mar 11, 2003
Accepted: Aug 14, 2003
Published online: Feb 19, 2004
Published in print: Mar 2004
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