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Evaluating Spillway Adequacy to Meet Present Day Dam Safety Requirements
Major dams have long lifespans and climatic situations, and safety guidelines change. This paper presents the results of a study of the Temengor Spillway undertaken at the request of TNB to determine if the existing spillway was adequate to maintain the safety of the Temengor Dam. The Temengor dam is a 128 m high rockfill clay core dam, with 6 million cubic metres of storage at the head of the Sg. Perak. The risk of failure is unthinkable as the dam has protected the downstream population from disastrous floods like that which occurred in 1963, before the dam was built. The study reviewed the derivation and magnitude of the Probable Maximum Flood (PMF), the reservoir storage capacity, the spillway discharge capacity, and its stability under PMF outflow. Computer Fluid Dynamic numerical modelling was carried out to determine the ultimate safe discharge capacity of the spillway. This paper presents the results of the study and concludes that the spillway is adequate to ensure the safety of the dam to pass the PMF outflow.
Evaluating Spillway Adequacy to Meet Present Day Dam Safety Requirements
Major dams have long lifespans and climatic situations, and safety guidelines change. This paper presents the results of a study of the Temengor Spillway undertaken at the request of TNB to determine if the existing spillway was adequate to maintain the safety of the Temengor Dam. The Temengor dam is a 128 m high rockfill clay core dam, with 6 million cubic metres of storage at the head of the Sg. Perak. The risk of failure is unthinkable as the dam has protected the downstream population from disastrous floods like that which occurred in 1963, before the dam was built. The study reviewed the derivation and magnitude of the Probable Maximum Flood (PMF), the reservoir storage capacity, the spillway discharge capacity, and its stability under PMF outflow. Computer Fluid Dynamic numerical modelling was carried out to determine the ultimate safe discharge capacity of the spillway. This paper presents the results of the study and concludes that the spillway is adequate to ensure the safety of the dam to pass the PMF outflow.
Evaluating Spillway Adequacy to Meet Present Day Dam Safety Requirements
Water Res.Develop.Managem.
Mohd Sidek, Lariyah (editor) / Salih, Gasim Hayder Ahmed (editor) / Ahmed, Ali Najah (editor) / Escuder-Bueno, Ignacio (editor) / Basri, Hidayah (editor) / Hanson, C. J. (author) / Alexander, J. L. (author) / Toh, C. K. (author)
International Conference on Dam Safety Management and Engineering ; 2023 ; Kuala Lumpur, Malaysia
Proceedings of the 2nd International Conference on Dam Safety Management and Engineering ; Chapter: 44 ; 643-658
2024-02-05
16 pages
Article/Chapter (Book)
Electronic Resource
English
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