LESOTHO HIGHLANDS WATER PROJECT - DESIGN AND CONSTRUCTION OF THE TRANSFER TUNNEL

Authors
BONIFACE A
Citation
A. Boniface, LESOTHO HIGHLANDS WATER PROJECT - DESIGN AND CONSTRUCTION OF THE TRANSFER TUNNEL, PROCEEDINGS OF THE INSTITUTION OF CIVIL ENGINEERS-CIVIL ENGINEERING, 120, 1997, pp. 30-42
Citations number
20
Categorie Soggetti
Engineering, Civil
Journal title
PROCEEDINGS OF THE INSTITUTION OF CIVIL ENGINEERS-CIVIL ENGINEERING → ACNP
ISSN journal
0965089X
Volume
120
Year of publication
1997
Pages
30 - 42
Database
ISI
SICI code
0965-089X(1997)120:<30:LHWP-D>2.0.ZU;2-T
Abstract
This paper describes the design and construction of the 45 km long, 4. 35 m dia, transfer tunnel on phase 1A of the Lesotho Highlands water p roject, The tunnel transfers water from the new Katse reservoir to the new underground hydroelectric power station at 'Muela in Lesotho. It was driven entirely through basaltic rock using three 5.03 m dia. TBMs and then lined with 300 mm in situ concrete. The project also include d a 98 m high reinforced concrete intake tower in the Katse reservoir and five raise-bored ventilation shafts up to 299 m deep.