Numerical Analysis of Directional Rock Blasting with Continuous-Discontinuous Element Method

doi:10.1007/s12205-023-0157-2

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	Numerical Analysis of Directional Rock Blasting with Continuous-Discontinuous Element Method
	Li, Yunpeng ; Feng C(冯春); Zhang, Yiming
发表期刊	KSCE JOURNAL OF CIVIL ENGINEERING
	2023-06-17
ISSN	1226-7988
摘要	When simulating the directional blasting process, many researchers focus on the cutting and splitting effects who might pay more attention on the crushing effects when studying conventional cut blasting. In this case, a numerical tool capable of capturing the strong discontinuity processes of quasi-brittle materials is highly preferable, where many blasting parameters should be calibrated and inputted. In this work, a hybrid finite-discrete elements method with explicit iterative procedure named Continuous-Discontinuous Elements Method (CDEM) is adopted to study the directional rock blasting processes. Landau model is used to capture the detonation effects, where the parameters are calibrated by comparing to the results provided by published literatures. We found that: i) The crack propagation mode of directional rock blasting is similar to those found in Brazilian splitting tests where the crack initiates from the midpoint of the connecting line of blast holes; ii) Compared with traditional cut blasting, the free surface has no significant influence on the blasting effect of directional cut blasting, while the spacing of the hole has great influence on the cutting effect. The index of fracture degree can be used to evaluate the blasting effect quantitatively. This work partly reveals some cracking patterns and rules of directional rock blasting, which may assist the engineers to develop improved precise blasting technologies.
关键词	Directional rock blasting Continuous-discontinuous element method (CDEM) Fracture degree Damage factor Numerical simulations
DOI	10.1007/s12205-023-0157-2
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:001009401200004
WOS研究方向	Engineering, Civil
项目资助者	National Natural Science Foundation of China [52178324] ; National Key Research and Development Project of China ; Ministry of Science and Technology of China [2018YFC1505504]
论文分区	Q3
力学所作者排名	1
RpAuthor	Feng, C (corresponding author), Chinese Acad Sci, Key Lab Mech Fluid Solid Coupling Syst, Inst Mech, Beijing 100190, Peoples R China.
引用统计	被引频次：1[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/92428
专题	流固耦合系统力学重点实验室
作者单位	1.{Li Yunpeng, Zhang Yiming} Hebei Univ Technol Sch Civil & Transportat Engn Tianjin 300401 Peoples R China 2.{Feng Chun} Chinese Acad Sci Key Lab Mech Fluid Solid Coupling Syst Inst Mech Beijing 100190 Peoples R China
推荐引用方式 GB/T 7714	Li, Yunpeng,Feng C,Zhang, Yiming. Numerical Analysis of Directional Rock Blasting with Continuous-Discontinuous Element Method[J]. KSCE JOURNAL OF CIVIL ENGINEERING,2023.
APA	Li, Yunpeng,冯春,&Zhang, Yiming.(2023).Numerical Analysis of Directional Rock Blasting with Continuous-Discontinuous Element Method.KSCE JOURNAL OF CIVIL ENGINEERING.
MLA	Li, Yunpeng,et al."Numerical Analysis of Directional Rock Blasting with Continuous-Discontinuous Element Method".KSCE JOURNAL OF CIVIL ENGINEERING (2023).

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