TECHNICAL NOTES
Mar 1, 1991
Trends in Phreatic Surface Motion in Rubble‐Mound Breakwaters
Publication: Journal of Waterway, Port, Coastal, and Ocean Engineering
Volume 117, Issue 2
Abstract
Experimental studies were undertaken to investigate phreatic surface motion in rubble-mound breakwater models. This motion was assessed as a function of a number of governing variables, including armor unit type, geometry of the armor layer, breakwater slope, and core permeability. Tests were conducted in a two-dimensional wave flume using regular waves. Both the maximum and average phreatic surface elevations were found to increase with increasing wave height, increasing wave period, and steeper slopes. The setup within the core was also significantly higher for tests with spheres in the armor layer, due to the increased permeability normal to the slope. Increasing core permeability resulted in sharp rises in the maximum and average phreatic surface elevations.
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References
1.
Dai, Y. B., and Kamel, A. M. (1969). “Scale effects tests for rubblemound breakwaters.” Report H69‐2, U.S. Army Corps Wtrways. Experiment Station, Vicksburg, Miss.
2.
Hall, K. R. (1987). “A study of the stability of rubblemound breakwaters.” Research Report 87‐2, Univ. of New South Wales Water Res. Lab., New South Wales, Australia.
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Copyright © 1991 ASCE.
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Published online: Mar 1, 1991
Published in print: Mar 1991
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Kevin R. Hall, Associate Member, ASCE
Asst. Prof., Dept. of Civ. Engrg., Ellis Hall, Queen's Univ., Kingston, Ontario, Canada K7L 3N6
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