Flyrock in surface mine blasting: understanding the basics to develop a predictive regime
IR@CIMFR: CSIR-Central Institute of Mining and Fuel Research, Dhanbad
View Archive Info| Field | Value | |
| Title |
Flyrock in surface mine blasting: understanding the basics to develop a predictive regime
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| Creator |
Raina, A.K.
Soni, A.K. |
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| Subject |
Blasting
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| Description |
Flyrock is one of the most contentious issues in bench
blasting. Unlike ground vibrations, flyrock has the
propensity to cause fatality and severe injuries.
Although the kinematic equations present a basis for
the estimation of flyrock distance, these suffer from
the drawback of ignoring the post-release effects of
trajectory motion in air. Predictive models that are
based on such equations not only suffer from this
anomaly, but also fail in flyrock distance prediction
due to the gross approximations of initial velocity
calculations and shape of the fragments.
This article discusses the flyrock phenomenon,
causative factors and their use in developing prediction models. Different predictive models, namely
empirical and semi-empirical are reviewed and the
drawbacks highlighted. The principal causative factors of flyrock namely blast-hole pressure, time of
blasting impact and post-release corrections are discussed with their relevance. The study culminates into
a futuristic comprehensive flyrock distance prediction
methodology to predict the blast danger zone along
with the probability and risk associated with flyrock.
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| Publisher |
Indian Academy of Sciences
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| Date |
2015-02
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| Type |
Article
PeerReviewed |
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| Identifier |
Raina, A.K. and Soni, A.K. (2015) Flyrock in surface mine blasting: understanding the basics to develop a predictive regime. Current Science, 108 (4). pp. 660-665. ISSN 0011-3891
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| Relation |
http://cimfr.csircentral.net/2379/
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