Rock fracture mechanism of air-deck charge blasting considering the action effect of blasting gas

doi:10.1016/j.tust.2023.105420

CORC > 力学研究所 > 中国科学院力学研究所 > 流固耦合系统力学重点实验室(2012-)

	Rock fracture mechanism of air-deck charge blasting considering the action effect of blasting gas
	Ding, Chenxi 1,3; Yang, Renshu 3; Zhu, Xinguang 2; Feng, Chun 2; Zhou, Jun 2
刊名	TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY
	2023-12-01
卷号	142 页码:16
关键词	Blasting gas Air-deck charge Profile quality Rock damage and fracture
ISSN号	0886-7798
DOI	10.1016/j.tust.2023.105420
通讯作者	Zhu, Xinguang(zhuxg@imech.ac.cn)
英文摘要	This paper primarily focuses on examining the impact of blasting gas, studying the rock fracture mechanism of air-deck charge blasting, and analyzing the evolutionary characteristics of blasting stress, the law of damage distribution, and the fracture characteristics in rock specimens. Firstly, indoor blasting model experiments are conducted and analyzed by combining the computed tomography (CT) scanning method, three-dimensional (3D) reconstruction technology, and fractal damage theory. The experimental results indicate that the distribution characteristics of rock damage in air-deck charge blasting are mainly determined by factors such as charge segment position, air-deck length, and position. Next, a numerical simulation method based on the coupling analysis of Lagrangian finite element and Euler finite volume is proposed to enable the numerical simulation of rock blasting fracture while considering the action effect of blasting gas. The analysis of the numerical simulation results reveals that the rock failure near the blasthole, under the influence of blasting gas, is primarily due to tensile failure, whereas the rock failure in the distant area is predominantly caused by shear failure. Furthermore, during the process of rock fragmentation by blasting gas, the initial interaction between the blasting gas and rock is the main controlling factor for rock damage and failure, whereas the subsequent reflection and transmission of blasting gas have a relatively minor impact on rock damage and failure.
资助项目	National Natural Science Foundation of China[52204085] ; Interdisciplinary Research Project for Young Teachers of USTB (Fundamental Research Funds for the Central Universities)[FRF-IDRY-21-006] ; Foundation of Hubei Key Laboratory of Blasting Engineering[BL2021-05]
WOS研究方向	Construction & Building Technology ; Engineering
语种	英语
WOS记录号	WOS:001084330900001
资助机构	National Natural Science Foundation of China ; Interdisciplinary Research Project for Young Teachers of USTB (Fundamental Research Funds for the Central Universities) ; Foundation of Hubei Key Laboratory of Blasting Engineering
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/93261]
专题	力学研究所_流固耦合系统力学重点实验室(2012-)
通讯作者	Zhu, Xinguang
作者单位	1.Jianghan Univ, Hubei Key Lab Blasting Engn, Wuhan 430056, Peoples R China 2.Chinese Acad Sci, Inst Mech, Key Lab Mech Fluid Solid Coupling Syst, Beijing 100190, Peoples R China 3.Univ Sci & Technol Beijing, Sch Civil & Resource Engn, Beijing 100083, Peoples R China
推荐引用方式 GB/T 7714	Ding, Chenxi,Yang, Renshu,Zhu, Xinguang,et al. Rock fracture mechanism of air-deck charge blasting considering the action effect of blasting gas[J]. TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY,2023,142:16.
APA	Ding, Chenxi,Yang, Renshu,Zhu, Xinguang,Feng, Chun,&Zhou, Jun.(2023).Rock fracture mechanism of air-deck charge blasting considering the action effect of blasting gas.TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY,142,16.
MLA	Ding, Chenxi,et al."Rock fracture mechanism of air-deck charge blasting considering the action effect of blasting gas".TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY 142(2023):16.