Refined Design and Optimization of Underground Medium and Long Hole Blasting Parameters—A Case Study of the Gaofeng Mine

Feng Gao, Xin Li, Xin Xiong (), Haichuan Lu and Zengwu Luo
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Feng Gao: School of Resources and Safety Engineering, Central South University, Changsha 410083, China
Xin Li: School of Resources and Safety Engineering, Central South University, Changsha 410083, China
Xin Xiong: School of Resources and Safety Engineering, Central South University, Changsha 410083, China
Haichuan Lu: Guangxi Gaofeng Mining Co., Ltd., Nandan 547051, China
Zengwu Luo: Guangxi Gaofeng Mining Co., Ltd., Nandan 547051, China

Mathematics, 2023, vol. 11, issue 7, 1-18

Abstract: Previously conducted studies have established that the rationality of the parameters of medium-deep hole blasting is one of the main factors affecting the blasting effect. To solve the problem of the parameter design and optimization design of medium-deep hole blasting in underground mines, a method of parameter design and the optimization of medium-deep hole blasting based on the blasting crater tests and numerical simulation analyses has been proposed in this study. Based on the background of deep underground mining in Gaofeng Mine, a two-hole blasting model has been established, and the blasting parameters are simulated and analyzed by the damage stress variation of the two-hole model. During the study, the initial values of blasting parameters were first obtained from the field blasting crater test, then the blasting parameters were optimized and analyzed by LS-DYNA software, and finally, the optimization scheme was demonstrated by the corresponding blasting test. The results of the field test showed that the design method of integrated blast crater test and numerical simulation analysis can effectively optimize the design of medium-deep hole blasting parameters and improve the blasting effect to a large extent. This study also provides an effective design system for the design of deep hole blasting parameters in similar mines.

Keywords: medium-deep hole blasting parameters; parameter design and optimization; blast crater test; LS-DYNA numerical simulation optimization; analysis of rock breaking by blasting (search for similar items in EconPapers)
JEL-codes: C (search for similar items in EconPapers)
Date: 2023
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