Drilling and facing of the Laval de Cère II Gallery, in France
DOI:
https://doi.org/10.3989/ic.1966.v19.i183.4179Abstract
The hydraulic development of Cère II is an important engineering project, that is being exploited by EDF. It is situated in the Central Massif, a mountainous region, and its features naturally correspond to the terrain where it is located. The gallery is very long, and every effort has been made to achieve high rates of progress both in the drilling and facing work. The author discusses the machinery that was used, and the measures adopted to take the greatest possible advantage of this equipment. The description is particularly detailed in relation to problems encountered on meeting changes in the rock and ground through which the gallery was drilled. The rate of progress could be investigated in detail, since two separate contractors were entrusted with this aspect of the work, and pursued their task independently.
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