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High and almost completely submerged rock-fill and cofferdam was sealed by inducing artificial silting on its water face; first, rockfill was placed by dumping, and carefully selected transition zone material was then placed on slope of rockfill; water outside cofferdam was rendered muddy by pumping clay and silt from river bottom and discharging it near and along water face of cofferdam; water was pumped from within cofferdam, creating differential head on rockfill and transition zone; suspended clay and silt penetrated transition and made it water-tight.
High and almost completely submerged rock-fill and cofferdam was sealed by inducing artificial silting on its water face; first, rockfill was placed by dumping, and carefully selected transition zone material was then placed on slope of rockfill; water outside cofferdam was rendered muddy by pumping clay and silt from river bottom and discharging it near and along water face of cofferdam; water was pumped from within cofferdam, creating differential head on rockfill and transition zone; suspended clay and silt penetrated transition and made it water-tight.
Unwatering Akosombo Cofferdams
ASCE -- Proc (J Soil Mechanics Foundations Div)
Bleifuss, D.J. (author)
1964
15 pages
Article (Journal)
English
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Highest underwater cofferdams keep Akosombo dry
Engineering Index Backfile | 1963
| Engineering Index Backfile | 1962
| UB Braunschweig | 1940
| Engineering Index Backfile | 1936
Engineering Index Backfile | 1940