Abstract
To identify problematic geological structures which would be encountered when driving tunnels in the high mountainous area of South West China, a joint geophysical and engineering geological study was made. The tunnels will form part of a project to divert water from the Yangtze to the Yellow Rivers. A controlled source audio-frequency magnetotelluric method (CSAMT) was carried out in 2004 between the Ma-ke and Jia-qu rivers in high, steep terrain. The paper discusses the method of data collection, processing, and analysis for the West route. The faults/fractures identified will need to be taken into account in the design and construction of the tunnel.
Résumé
Afin d’identifier des structures géologiques contraignantes qui pourraient être rencontrées lors du creusement de tunnels au travers des régions montagneuses de la Chine du sud-ouest, une étude couplée de géophysique et de géologie de l’ingénieur a été réalisée. Les tunnels feront partie du projet de détournement des eaux du bassin du Yangtze vers celui du Fleuve Jaune. Une méthode magnéto-tellurique (CSAMT) a été mise en œuvre en 2004 entre les rivières de Ma-ke et Jia-qu dans une région d’altitude présentant des pentes raides. L’article discute des méthodes de récupération, traitement et analyse des données pour l’itinéraire de l’Ouest. Les failles et fractures identifiées devront être prises en compte dans la conception et la construction du tunnel.
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The authors thank the financial support for this work from the project 2002CB412702 and KZCX3-SW-134.
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An, Z., Di, Q., Wu, F. et al. Geophysical exploration for a long deep tunnel to divert water from the Yangtze to the Yellow River, China. Bull Eng Geol Environ 71, 195–200 (2012). https://doi.org/10.1007/s10064-011-0358-7
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DOI: https://doi.org/10.1007/s10064-011-0358-7