Imaging soil and rock along tunnel alignments with combined geophysical seismic techniques, case histories

Milan Situm, Ben McClement, Jean-Luc Arsenault

In the proceedings of: GEO2011: 64th Canadian Geotechnical Conference, 14th Pan-American Conference on Soil Mechanics and Geotechnical Engineering, 5th Pan-American Conference on Teaching and Learning of Geotechnical Engineering

Session: Deep Foundations

ABSTRACT: Recent advances in non-invasive geophysical techniques for tunnel pre-design have improved the resolution of mapping soil and rock stratigraphy and structural flaws. The detailed description of the subsurface continuously along a tunnel alignment, whether within the bedrock or the overburden, can identify problematic geology during the design phase. Two case studies are discussed that use combined seismic methods along proposed tunnel alignments to map geology.

RÉSUMÉ: -et des défauts géologiques structuraux. La description détaillée du sous--projet. Deux cas sont présentés, où une combinaison de méthodes sismiques est utilisée pour faire la caractérisation géologique le long de deux axes de tunnels proposés.

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