Subventions et des contributions :

Subvention ou bourse octroyée s'appliquant à plus d'un exercice financier (2017-2018 à 2018-2019).

The proposed research project aims to improve the blasting process in Milton quarry by integrating advancedx000D
monitoring and instrumentation techniques. A geophysical ground penetrating radar will be used tox000D
characterize the spatial variation of open voids in the limestone rock mass at the quarry site. These voids arex000D
causing the escape of explosive energy and consequently a poor rock fragmentation. Moreover, an aerialx000D
method based on Unmanned Aerial Vehicle technology will be used to characterize the geometrical rockx000D
structural characteristics which will be used to estimate the in-situ block size distribution of rock mass. Thex000D
information on spatial variation of open voids and discontinuties within the rock mass will be used as input tox000D
build a 3D structural model for the rock mass using Discrete Fracture Network model. The model allowsx000D
improving the practice of decking blast in the quarry. The drone technology will be used to measure thex000D
post-blast rock size distribution using image analysis. This allows assessing the effectivness of the blastx000D
decking modification on the blast-induced fragmentation size distribution. Using advanced instrumentation andx000D
monitoring techniques together with the state of the art structural modeling approach will allow improvment ofx000D
blasting outcomes at Milton quarry.