Saharan , Mani Ram (2010) Numerical Modelling Investigations to Study Effect of Geotechnical and Explosive Properties in Limiting Rock Fracturing due to Blasting in Deep Mining Roadways. In: ISRM International Symposium- 6th Asian Rock Mechanics Symposium , 23-27, New Delhi.

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Abstract

Analysis of the extent of fracturing by destress blasting is presented in this paper. The fracture pattern is obtained through dynamic modelling of discrete fractures by using a new numerical modelling procedure. The analysis indicates that the application of destress blasting in hard rock mines most likely renders psychological advantage rather than factual benefits. This analysis is in agreement with an analysis of field application of destress blasting, which is presented elsewhere. It is observed from the results of numerical modelling that blasting in confinement will result in fractures aligned along the principal stress axis. This alignment is not propitious to the desired destressing or stress relaxation.

Item Type:	Conference or Workshop Item (Paper)
Uncontrolled Keywords:	Destress blasting, dynamic rock fracturing, hard rock mine, dynamic modelling, finite element analysis, destressing, stress relaxation, fracturing extent
Subjects:	Blasting
Divisions:	UNSPECIFIED
Depositing User:	Dr. Satyendra Kumar Singh
Date Deposited:	01 Mar 2012 05:25
Last Modified:	01 Mar 2012 05:25
URI:	http://cimfr.csircentral.net/id/eprint/1017

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