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WASSERWIRTSCHAFT
Published in: WASSERWIRTSCHAFT 1/2018

01-06-2018 | Technics

The Wadi Dayqah drinking water dam in Oman — lessons learned from planning, construction and operation

Author: Professor (em.) Theodor Strobl

Published in: WASSERWIRTSCHAFT | Special Issue 1/2018

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Excerpt

The Sultanate of Oman is in one of the world’s semi-arid regions. The Wadi Dayqah project involved creating a 75 m-high roller-compacted concrete (RCC) dam, a 50 m-high rock-fill saddle dam, a 100 km-long water pipeline and a water treatment works. Sizing the spillway over the RCC dam and sealing the sandstone bedrock below the dam were the biggest challenges during planning work, alongside high day-time and night-time temperatures of 45 °C to 35 °C in summer. During construction work, flow exceeded 10,000 m3/s in the wadi during a tropical cyclone in June 2007. The spillway had only been designed to handle 7,500 m3/s so it had to be adjusted to reflect the new conditions. During the first impoundment, seepage occurred on the right flank of the rock-fill dam, which would have jeopardised the dam’s structural safety in the long run. Consequently, the bedrock under the right valley flank had to be resealed. …
previous article El Zapotillo — A 130 metre-high RCC dam founded on a highly deformable rock mass

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Literature
[1]
Prisk, M.; Richards, M.; Hieatt, M.: Delivering Wadi Dayqah, Oman’s tallest dam. In: Civil Engineering 162 (2009), No. 11, pp. 42–50.
[2]
Hieatt, M.; Hall, J. K.; Wheeler, M.; Richards, M.: Wadi Dayqah Dams: Design Modifications in the wake of Cyclone Gonu. In: Managing Dams: Challenges in the Time of change. London: Thomas Telford, 2010.
[3]
Francou, J.; Rodier, J. A.: Essai de classification des crues maximales obervees dans le monde. In: Cah. ORSTOM. Ser. Hydrol IV (1967), No. 3.
Metadata
Title
The Wadi Dayqah drinking water dam in Oman — lessons learned from planning, construction and operation
Author
Professor (em.) Theodor Strobl
Publication date
01-06-2018
Publisher
Springer Fachmedien Wiesbaden
Published in
WASSERWIRTSCHAFT / Issue Special Issue 1/2018
Print ISSN: 0043-0978
Electronic ISSN: 2192-8762
DOI
https://doi.org/10.1007/s35147-018-0122-z

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