The Polihali Transfer Tunnel will be 38km long with a 5m nominal bore. It will transfer water from Polihali to the Katse reservoir. Tunnel boring and drill and blast methods will be used to excavate the tunnel.
Tunnel Boring Machine tunnel.
Tender announcement:
http://www.lhda.org.ls/tenderbulletin/tenderInformation.aspx?ContractNumber=4021
UPDATE from Reuters,
South Africa’s Trans-Caledon Tunnel Authority (TCTA) has raised just over ($1.09 billion) to continue construction of the Lesotho Highlands water project, the minister of water and sanitation said.
South Africa's Trans-Caledon Tunnel Authority (TCTA) has raised just over 15 billion rand ($1.09 billion) in capital markets to continue construction of the Lesotho Highlands water project, the minister of water and sanitation said on Tuesday.
cover tunnel photo by: Matt Brown from London, England / CC BY
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https://www.waterpowermagazine.com/news/newslhda-launch-tender-for-polihali-transfer-tunnel-construction-lesotho-8769683
Tender for Polihali Transfer Tunnel construction, Lesotho - International Water Power
www.waterpowermagazine.comThe Lesotho Highlands Development Authority (LHDA) has launched the tender for the construction of the Polihali Transfer Tunnel – a major contract in Phase II of the Lesotho Highlands Water Project – with the tender for the...