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CASE HISTORY ON A RAILWAY TUNNEL IN SOFT ROCK (MOROCCO) (2009)
Ras R’Mel Moroccan tunnel is a 2.6 km long and 60m2 section single track railway tunnel. It was excavated in a complex geological context of highly heterogeneous and highly deformable soft rock. The purpose of this paper is first to describe the methodology used for specific design of support and lining. The deformation monitoring process applied during construction will then be detailed, and an analysis of the deformations measured will be given, making a comparison with design calculations results. Main concerns were potential face instability and high tunnel deformations.
Geotechnical Aspects of Underground Construction in Soft Ground – Ng, Huang & Liu (eds), © 2009 Taylor & Francis Group, London
TERRASOL, Geotechnical consulting engineers, France