Imperial College London
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Dr Adriana Paluszny

Faculty of Engineering, Department of Earth Science & Engineering

Reader in Computational Geomechanics
 
 
 
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Contact

 

+44 (0)20 7594 7435apaluszn

 
 
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Location

 

RSM 2.48Royal School of MinesSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@inproceedings{Thomas:2022,
author = {Thomas, RN and Bird, RE and Paluszny, A and Zimmerman, RW},
title = {Numerical Study of Three-dimensional Blast-induced Damage Patterns resulting from Simultaneous Borehole Blasting of Hard Rocks},
year = {2022}
}
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RIS format (EndNote, RefMan)

TY  - CPAPER
AB  - Simultaneous detonation of charges in closely spaced boreholes is a commonly used blasting technique for fragmentation and construction. Blasting is a challenging phenomenon to model, due to the complexity of the mechanical deformation, fracturing, and fragmentation, and the spatial scales involved. Blast wave models must consider the possibility of constructive interference between separate waves in three-dimensions. A three-dimensional finite element method is used to study the induced damage in a general hard rock tunnel blast setting. The Johnson Holmquist-2 elastoplastic-damage model is used to quantify shear and tensile failure. In simulations with two blastholes separated by up to one meter, damage patterns emanating from boreholes interact to form self-organizing 'fracture-like' structures. Mechanical interaction between the two blasts is a function of the input charge wave properties, blasthole separation, and distance along the charge, with high concentrations of damage at the free boundary representing the tunnel wall. Constructive interference between the two blast waves is not shown to directly induce additional damage zones, and instead, interaction results from the overlap and slight extension of each blasthole's damage zone towards the other.
AU  - Thomas,RN
AU  - Bird,RE
AU  - Paluszny,A
AU  - Zimmerman,RW
PY  - 2022///
TI  - Numerical Study of Three-dimensional Blast-induced Damage Patterns resulting from Simultaneous Borehole Blasting of Hard Rocks
ER  -
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