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

doi:10.1007/s12205-023-0157-2

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-)

	Numerical Analysis of Directional Rock Blasting with Continuous-Discontinuous Element Method
	Li, Yunpeng ; Feng C(冯春); Zhang, Yiming
刊名	KSCE JOURNAL OF CIVIL ENGINEERING
	2023-06-17
关键词	Directional rock blasting Continuous-discontinuous element method (CDEM) Fracture degree Damage factor Numerical simulations
ISSN号	1226-7988
DOI	10.1007/s12205-023-0157-2
英文摘要	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.
分类号	Q3
WOS研究方向	Engineering, Civil
语种	英语
WOS记录号	WOS:001009401200004
资助机构	National Natural Science Foundation of China [52178324] ; National Key Research and Development Project of China ; Ministry of Science and Technology of China [2018YFC1505504]
其他责任者	Feng, C (corresponding author), Chinese Acad Sci, Key Lab Mech Fluid Solid Coupling Syst, Inst Mech, Beijing 100190, Peoples R China.
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/92428]
专题	力学研究所_流固耦合系统力学重点实验室(2012-)
作者单位	1.{Feng Chun} Chinese Acad Sci Key Lab Mech Fluid Solid Coupling Syst Inst Mech Beijing 100190 Peoples R China 2.{Li Yunpeng, Zhang Yiming} Hebei Univ Technol Sch Civil & Transportat Engn Tianjin 300401 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).