Open Access

ARTICLE

Optimization of the Air Deck Blasting Parameters on the Basis of the Holmquist-Johnson-Cook Constitutive Model

Zuoming Yin^1,*, Xuguang Wang², Desheng Wang¹, Zhiheng Dang¹, Jianfeng Shao³
1 School of Civil & Resource Engineering, University of Science and Technology Beijing, Beijing, China
2 Beijing General Research Institute of Mining & Metallurgy, Beijing, China
3 MCC Construction Research Institute Co., Ltd., Beijing, 100082, China
* Corresponding Author: Zuoming Yin. Email:
(This article belongs to this Special Issue: EFD and Heat Transfer III)

Fluid Dynamics & Materials Processing 2022, 18(2), 257-269. https://doi.org/10.32604/fdmp.2022.017915

Received 16 July 2021; Accepted 26 August 2021; Issue published 16 December 2021

Abstract

The present study considers the so-called air deck blasting, one of the most commonly used techniques for the improvement of blasting efficiency in mining applications. In particular, it aims to improve the operating conditions of large-scale equipment, increase the efficiency of the slope enlarging process, and reduce the mining cost. These objectives are implemented through a two-fold approach where, first, a program for slope enlarging based on the middle air-deck charge blasting-loosening technology is proposed, and second, the physical mechanism responsible for the stress wave attenuation in the rock is analyzed in the framework of a Holmquist–Johnson–Cook constitutive model. Field test results verify that the proposed approach is highly efficient and economical when used in medium-hard rock blasting and thus provides a basis for the practical implementation of slope enlargement for high benches in Open-Pit Mines.

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Keywords

Air deck blasting parameters; holmquist–johnson–cook constitutive model; fluid-structure coupling; loosening blasting

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