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ROCK MACHINABILITY STUDIES FOR THE ASSESSMENT OF SELECTIVE TUNNELLING MACHINE PERFORMANCE.

โœ Scribed by Fowell, R. J. (author);Pychroft, A. S. (author)

Publisher
Univ of Mo
Year
1980
Tongue
English
Weight
96 KB
Category
Article
ISSN
0148-9062

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Tunnel Boring Machine performance in bas
Tunnel Boring Machine performance in basalts of the Lesotho Formation
โœ A. Boniface ๐Ÿ“‚ Article ๐Ÿ“… 2000 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 507 KB

The paper reviews the pre-tender estimates and actual performances of three Tunnel Boring Machines (TBMs) used to excavate the 45-kin-long Transfer Tunnel for Phase 1A of the Lesotho Highlands Water Project. The pre-tender estimates were to a large extent based on the results of investigations into