Singh, P.K. (2002) Impact of Initiation Sequences in Opencast Blasting on the Intensity of Vibration in Underground Openings. Journal of Explosives Engineering, 19 (2). pp. 36-39. ISSN 0889-0668

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Abstract

Vibrations are of concern not only for the safety of surface structures but also for the stability of underground openings. A number of parameters affect the intensity of vibration in underground openings due to blasting in adjacent opencast mine viz. total explosive weight detonated in a round maximum explosive wight per delay, propagating media, depth of cover, RMR of the roof rock, age of the underground openings etc. Although a few researcher have tried to study the impact of parameters stated above, the impact of initiation sequences on generation of vibration in underground openings due to opencast blasting has yet remained untouched. A study was planned to evaluate the impact of initiation sequences on the magnitude of vibration in underground openings due to blasting in opencast mine. Nine production blasts with top and bottom initiations were performed at Samleshwari opencast project in India and eighteen vibration data were monitored in the roof of Hingir Rampur underground colliery in both the initiation sequences. The result indicated that the vibration produced in the underground openings from bottom initiation was lower than that of top initiation.

Item Type:	Article
Subjects:	Blasting
Divisions:	UNSPECIFIED
Depositing User:	Dr. Satyendra Kumar Singh
Date Deposited:	01 Dec 2011 05:55
Last Modified:	01 Dec 2011 05:55
URI:	http://cimfr.csircentral.net/id/eprint/209

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