Details

Autor(en) / Beteiligte

• Voulgarakis, A. G.
• Michalakopoulos, T. N.
• Panagiotou, G. N.

Titel

The minimum response time in rock blasting: a dimensional analysis of full-scale experimental data

Ist Teil von

• Transactions of the Institution of Mining and Metallurgy. Section A, Mining technology, 2016-10, Vol.125 (4), p.242-248

Ort / Verlag

London, England: Taylor & Francis

Erscheinungsjahr

2016

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• When designing large-scale blasting operations, great consideration should be given to tailor the fragment size distribution in order to fulfil production requirements, while ensuring at the same time efficient and economical downstream operations such as loading, hauling, crushing and grinding. The selection of an optimum inter-hole delay time has been found to have beneficial effects in controlling fragmentation and face movement. The minimum response time T min is reported in the literature as a key parameter for the selection of the appropriate inter-hole delay time. In this paper, data collected from 10 monitored full-scale blasts are used to investigate bivariate correlations between various design parameters. Further processing of the data using dimensional analysis resulted in the derivation of a mathematical relation that can estimate T min as a function of blast design parameters and the desired size reduction ratio of blasting.