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Case study of a recovery shaft

L.F. Cao, S.M. Peaker, I.P. Lieszkowszky, S. Skelhorn

In the proceedings of: GEO2010 Calgary: 63rd Canadian Geotechnical Conference & 6th Canadian Permafrost Conference

Session: M1-C

ABSTRACT: This paper presents a case history of a deep shaft constructed in disturbed sandy ground with the purpose of recovering a tunnel boring machine. Soil investigations were undertaken to establish soil conditions. Field instrumentation was used to monitor the lateral and vertical movements during excavation and backfilling. The findings reinforce the importance of soil investigation and field monitoring. Field monitoring results show that the actual settlement of the shaft is smaller than the theoretical prediction.

RÉSUMÉ: Cet article présente une étude de cas concernant l'observation du tassement des sols sableux dérangés par la construction d'une fosse profond. La fosse a été construite pour permettre à récupérer une machine tunnelier. Des investigations géotechniques on été enterprises pour établir les états de sol. On a employée de l'instrumentation pour mesurer les mouvements latéraux et verticaux des sols a cours de l'excavation et du remblai. Les résultats de cet investigation renforcent l'importance des investigations géotechniques, et des surveillences in situ. Ces résultats in situ montre que pendant la construction de la fosse, le tassement du sol était moins que dans les prédictions théorique. 1 INTRODUCTION

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Cite this article:
L.F. Cao; S.M. Peaker; I.P. Lieszkowszky; S. Skelhorn (2010) Case study of a recovery shaft in GEO2010. Ottawa, Ontario: Canadian Geotechnical Society.

@article{GEO2010_040, author = L.F. Cao; S.M. Peaker; I.P. Lieszkowszky; S. Skelhorn,
title = Case study of a recovery shaft,
year = 2010
}