Numerical Simulations for Rock Fracturing by Destress Blasting

This book concentrates on the evaluation of destress
blasting, which is an important pro-active rockburst
control measure. The concept of destress blasting is
based on the fracturing of highly stressed rock mass
by detonating explosive charge within it. To date,
the application lacks scientific base. The aim of
this book is to identify the governing mechanisms
associated with destress blasting applications. A
holistic approach is undertaken, which involves a
critical analysis of the reported field evidence,
development of a numerical procedure and detailed
investigations at the micro-mechanical level to
investigate the fracturing of rock under confinement
by different types and magnitudes of explosive
energy. Analysis of destress blasting is made
through dynamic modelling by simulating discrete
fractures. Fracturing extent and the amount of
destressing is evaluated with the assistance of
normalized non-dimensional parameters. These
parameters adequately explains destressing
phenomenon and offers clarifications to seemingly
inexplicable reported field observations.

Autorentext

Dr. MANI RAM SAHARAN: A senior scientist with CIMFR, India since 1996. A mining engineering graduate with PhD-Mining Engineering, McGill University in year 2004. HANI S. MITRI: A professor with McGill Mining since 1986. He established Mine Design, Numerical Modelling and Rockbolting Labortaries and supervised 14 PhDs & 17 M.Tech. thesis.

Klappentext

This book concentrates on the evaluation of destress blasting, which is an important pro-active rockburst control measure. The concept of destress blasting is based on the fracturing of highly stressed rock mass by detonating explosive charge within it. To date, the application lacks scientific base. The aim of this book is to identify the governing mechanisms associated with destress blasting applications. A holistic approach is undertaken, which involves a critical analysis of the reported field evidence, development of a numerical procedure and detailed investigations at the micro-mechanical level to investigate the fracturing of rock under confinement by different types and magnitudes of explosive energy. Analysis of destress blasting is made through dynamic modelling by simulating discrete fractures. Fracturing extent and the amount of destressing is evaluated with the assistance of normalized non-dimensional parameters. These parameters adequately explains destressing phenomenon and offers clarifications to seemingly inexplicable reported field observations.