n Journal of the South African Institution of Civil Engineering = Joernaal van die Suid-Afrikaanse Instituut van Siviele Ingenieurswese - Design of the 'Muela hydropower station : Lesotho Highlands Water Project

Volume 40, Issue 1
  • ISSN : 1021-2019



A 72MW hydropower station is included in phase 1A of the Lesotho Highlands water project to allow Lesotho to become self-sufficient in energy production. This paper describes the design of the 'Muela underground power station and regulating reservoir formed by a 55m high dam. Features include the accommodation of hydraulic transients arising in the 45km long upstream tunnel, the changes made in the dam to take account of a thin clay layer in one abutment and the special consideration given to the provision of a bypass to allow water transfer to take place when the station is out of commission.

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