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.
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.