Raina, A.K. (2019) Some insights into fracturing of rock due to blasting in homogeneous material using particle flow code. Journal of Mines, Metals & Fuels, 67 (1). pp. 24-30. ISSN 0022-2755

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Abstract

Blasting is a dynamic process in which rock is broken into smaller fragments, so that, it can be loaded and hauled with least effort and hence investment. The performance of the mine to mill system thus is mainly dependent on the fragmentation that in turn should be of optimum size. Understanding the fracture mechanics of a particular rock is thus quite imperative. Understanding the breakage of rockmass is very important because it ultimately helps in evaluating the performance of equipment vis-a-vis optimum fragment size that finally dictates the mine economics. The outcome of a blast is dependent on several variables belonging to rockmass and blast design. While blast design variables are controllable, the rock variables are of uncontrolled nature and hence difficult to simulate. One of the rock properties is its stiffness that has an impact on breakage of rock and is the subject of this paper. In order to determine the behaviour and fracturing during dynamic loading simple models representing blast benches were constructed using Particle Flow Code2D. Few simulations of throw, stemming movement and heave were made while varying the stiffness of material and keeping all other parameters constant. The paper thus reports the results obtained from such simulations.

Item Type:	Article
Uncontrolled Keywords:	Particle flow code, blasting, fracturing, homogeneous material, material properties
Subjects:	Blasting
Divisions:	UNSPECIFIED
Depositing User:	Mr. B. R. Panduranga
Date Deposited:	16 Mar 2019 05:12
Last Modified:	16 Mar 2019 05:12
URI:	http://cimfr.csircentral.net/id/eprint/1977

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