TBM modification for challenging rock conditions - a progress report of the Niagara Tunnel Project (NTP) / TBM-Umbau unter schwierigen Gebirgsbedingungen - ein Baubericht über das Niagara Tunnel Projekt (NTP)
Author(s): |
E. Gschnitzer
R. Goliasch |
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Medium: | journal article |
Language(s): | English, German |
Published in: | Geomechanics and Tunnelling, 2009, n. 2, v. 2 |
Page(s): | 168-178 |
DOI: | 10.1002/geot.200900016 |
Abstract: |
The Niagara Tunnel Project (NTP) is a 10.2 km long bored pressure tunnel that will run under the City of Niagara Falls from the Upper Niagara River to the Sir Adam Beck Power Station. The completed project will enhance the capacity of the Sir Adam Beck Power Station by adding 500 m³/of water per second through the new diversion tunnel. The paper describes the project in which the world's largest hard rock TBM at 14.4 m in diameter is being used to excavate the tunnel. Features of the project include the use of a complex logistic system that allows different work steps simultaneously and describes the site installation for intake as well as for the outlet structures. The paper will also discuss the optimization of the TBM system as the tunnel advances through the varying geology consisting of various horizontal banked shale layers. |
Keywords: |
excavations overbreaks swelling rock hard rock TBM twopass lining system corrosive ground water
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Available from: | Refer to publisher |
Structures and Projects
- About this
data sheet - Reference-ID
10063857 - Published on:
19/11/2010 - Last updated on:
09/12/2014