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

作　　者：Zuoming Yin Xuguang Wang Desheng Wang Zhiheng Dang Jianfeng Shao 

机构地区：[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

出　　处：《Fluid Dynamics & Materials Processing》2022年第2期257-269,共13页流体力学与材料加工（英文）

摘　　要：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.

关 键 词：Air deck blasting parameters holmquist-johnson-cook constitutive model fluid-structure coupling loosening blasting 

分 类 号：TD2[矿业工程—矿井建设]