Raina, A.K. and murthy, VMSR and Soni, A.K. (2014) Flyrock in bench blasting: a comprehensive review. Bulletin of Engineering Geology and the Environment, 73 (4). pp. 1199-1204. ISSN 1435-9529

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Abstract

Flyrock is unwanted throw of rock fragments during bench blasting in mines and civil constructions. Perfunctory attempts by researchers to predict the flyrock range using mathematical, empirical and ANN based models do not address the issue in totality. Thus, flyrock continues to haunt the blaster. The research on the subject is, thus, still in its infancy. This paper identifies the lacunae, through a comprehensive review of the existing models, and suggests measures for better prediction and understanding of the problem on a holistic plane. One of the main reasons for improper predictions is the lack of data on flyrock in comparison to blast vibrations owing to statutory restrictions, avoidance of reporting and consequent constraints on experimentation. While fragmentation and throw of rock accompanied by subsequent vibration and air overpressure are essential constituents of the blasting, flyrock is not. This probably is one of the main errors in predictive domains. In addition, rock mass properties play a major role in heaving of rock fragments during blasting. Barring density of the rock, other rock mass properties have practically been ignored in all the models. At the end of this paper, for future investigations, a methodology for prediction of flyrock is also given.

Item Type:	Article
Uncontrolled Keywords:	Surface bench blasting Flyrock prediction Safety Danger zone Literature review
Subjects:	Blasting
Divisions:	UNSPECIFIED
Depositing User:	Mr. B. R. Panduranga
Date Deposited:	05 Jul 2016 05:26
Last Modified:	05 Jul 2016 05:26
URI:	http://cimfr.csircentral.net/id/eprint/1574

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