SECANT PILED SHAFT CONSTRUCTION AND MICROTUNNELLING IN SAND

Aiden Horan, Scott Peaker

In the proceedings of: GeoQuébec 2015: 68th Canadian Geotechnical Conference & 7th Canadian Permafrost Conference

Session: Transportation and Linear Infrastructure I / Transports et infrastructures linéaires I

ABSTRACT: This paper outlines the installation of three 18m deep shafts up to 8.2m internal diameter, and two tunnels with an internal diameter of 1.2m in sand with the water table near the ground surface. The shafts were constructed using the secant piled method while the tunnels were constructed via microtunnelling. The challenges and problems associated with these difficult installations are presented, as well as the solutions used to overcome and mitigate the issues encountered.

RÉSUMÉ: Cet article décrit l'installation de trois puitdeux tunnels de 1,2 m de diamètre interne dans le sable avec une nappe phréatique près de la surface. Les puits ont été construits en utilisant la méthode des pieux sécants, tandis que les tunnels ont été construits par la technique du microtunnelier. Les défis et les problèmes associés à ces installations complexes, ainsi que les solutions utilisées pour surmonter et atténuer les difficultés rencontrées sont présentés.

Please include this code when submitting a data update: GEO2015_610

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