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Vibrations monitoring for the blasting of a 70m deep shaft in an urban environment - challenges and lessons learned

C. Trottier, M.Sc. Phys., O. Champagne, B. Walker, J. Cubillos

In the proceedings of: GeoCalgary 2022: 75th Canadian Geotechnical Conference

Session: W5

ABSTRACT: The construction of Montreal's REM light rail project includes the excavation of a 70m shaft and galleries in the bedrock of Mount Royal to create the Edouard-Montpetit train station. This multi-level blasting program poses many challenges with regard to vibration and movement monitoring. The future station is adjacent to a University of Montreal building, the Edouard-Montpetit subway station, a densely populated residential area, and main water, sewer, electrical, natural gas and telecommunication utilities; the site was excavated in three phases from July 2018 to fall 2020. This paper discusses the challenges of the monitoring program, equipment installation and monitoring of rock blasting. Aspects of the monitoring program studied include coordination with various stakeholders (client, engineering, contractors, workers, personnel and public), the use of state-of-the-art instrumentation to meet the project needs, on site installation and monitoring challenges, and the implementation of a sophisticated data management, communication, and visualization platform. We also discuss the lessons learned from carrying out this project, which include documenting various technical, environmental, and budgetary constraints, to be used as a roadmap for future projects.


RÉSUMÉ: Le projet de Réseau Electrique Métropolitain inclut l’excavation des conduits et galeries dans le soubassement du Mont Royal pour la construction de la station du train Édouard-Montpetit. Ce programme de sautage multi-niveau met plusieurs défis en ce qui concerne la vibration et surveillance des mouvements. Cette train station qui est adjacent au bâtiment de L’Université de Montréal, la station du métro Édouard-Montpetit, des zones résidentiels densément peuplée, et différents services d’utilité publique, a été excavé en trois étages depuis Juliet 2018 jusque automne 2020. Cet article discute les défis du programme de surveillance, l’installation des instruments et le monitoring des sautages. En collaboration avec différents participants (client, ingénierie, entrepreneurs, travailleurs, personnel, et publique), l’usage du dernier cri d’instrumentation pour parvenir les besoins du projet, défis d’installation et surveillance sur le terrain, et l’implémentation d’un platform sophistiqué pour le maniement des données, communication, et visualisation. Nous communiquons aussi les leçons appris à partir du ce projet qui inclut plusieurs restrictions techniques, environnementaux, et budgétaire vers la documentation afin de promouvoir la récurrence de résultats désirables.


Please include this code when submitting a data update: GEO2022_48

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Cite this article:
Trottier, C., Phys., M.Sc., Champagne, O., Walker, B., Cubillos, J. (2022) Vibrations monitoring for the blasting of a 70m deep shaft in an urban environment - challenges and lessons learned in GEO2022. Ottawa, Ontario: Canadian Geotechnical Society.

@article{Trottier_GEO2022_48, author = C. Trottier, M.Sc. Phys., O. Champagne, B. Walker, J. Cubillos,
title = Vibrations monitoring for the blasting of a 70m deep shaft in an urban environment - challenges and lessons learned ,
year = 2022
}