A Further Study on the Mechanism of Pre-Splitting in Mining Engineering

Ebrahim Fathi Salmi; Saeed Hosseinzadeh

doi:10.4028/www.scientific.net/AMM.553.476

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A Further Study on the Mechanism of Pre-Splitting in Mining Engineering
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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 553A Further Study on the Mechanism of Pre-Splitting...

A Further Study on the Mechanism of Pre-Splitting in Mining Engineering

Abstract:

In this paper, the mechanism of pre-splitting was analysed using both theoretical and numerical methods. An analytical approach was derived based on the thick-wall cylinder theory. Numerical simulation of pre-split blasting of a two adjacent blast-hole bench was conducted using FLAC^3D software. The sequential loading stages of explosive and stress wave were simplified to a triangular shape pulse and applied to the inner wall of blast-holes. Blast wave fronts and plastic zones were monitored in different elapsed times after detonation. Numerical findings show that collision between the two adjacent stress waves induces a tensile wave, playing the key role in pre-splitting.

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Periodical:

Applied Mechanics and Materials (Volume 553)

Pages:

476-481

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.553.476

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Online since:

May 2014

Authors:

Ebrahim Fathi Salmi, Saeed Hosseinzadeh*

Keywords:

Analytical Approach, Numerical Modeling, Pre-Splitting

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