A Novel Continuous-Discontinuous Multi-Field Numerical Model for Rock Blasting

doi:10.3390/app122111123

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-)

	A Novel Continuous-Discontinuous Multi-Field Numerical Model for Rock Blasting
	Li, Yunpeng 3; Feng C(冯春)2; Ding, Chenxi 1; Zhang, Yiming 3
刊名	APPLIED SCIENCES-BASEL
	2022-11-01
卷号	12 期号:21 页码:13
关键词	rock blasting continuous-discontinuous element method (CDEM) multi-field coupled processes dynamic loading gas permeation numerical simulations
DOI	10.3390/app122111123
通讯作者	Feng, Chun(fengchun@imech.ac.cn)
英文摘要	During blasting, rock failure is caused by blasting wave and explosive gas pressure, as a multi-field coupled process. Most numerical models focus on the effect of blasting wave where the gas pressure is commonly accounted for by empirical relations, ignoring the penetration and permeation of gas flow in cracks. This can underestimate the failure region. In this work, a novel multi-field model is developed in the framework of a continuous-discontinuous element method (CDEM), which is a coupled finite-discrete method with explicit integration strategy. The deformation and cracking of rock mass and the distribution of gas pressure are captured. The proposed method is verified by comparing the results to other results provided in published literature. Especially, by simulating the cases with blocked and unblocked blasting hole, we found that: (i) The fracture degree of the case with blocked blasting hole was 30% higher than that of the unblocked blasting hole. (ii) The radial main cracks in the fracture area are mainly caused by the explosive gas, and the tiny and dense cracks near the hole are induced by the explosion stress wave. (iii) The explosion crushing zone is mainly formed by the action of explosion stress wave, while the crack zone is formed by the combined action of the explosion stress wave and explosive gas. The proposed method provides a useful tool to properly simulate a rock blasting process.
分类号	二类
资助项目	National Natural Science Foundation of China[52178324] ; National Key Research and Development Project of China ; Ministry of Science and Technology of China[2018YFC1505504]
WOS关键词	MANIFOLD METHOD ; CRACK-PROPAGATION ; EMBEDDED APPROACH ; MESHFREE METHOD ; FIELD ; SIMULATION ; STRESS ; CDEM
WOS研究方向	Chemistry ; Engineering ; Materials Science ; Physics
语种	英语
WOS记录号	WOS:000883576400001
资助机构	National Natural Science Foundation of China ; National Key Research and Development Project of China ; Ministry of Science and Technology of China
其他责任者	Feng, Chun
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/90825]
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.Univ Sci & Technol Beijing, Sch Civil & Resource Engn, Beijing 100083, Peoples R China 2.Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China; 3.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,Ding, Chenxi,et al. A Novel Continuous-Discontinuous Multi-Field Numerical Model for Rock Blasting[J]. APPLIED SCIENCES-BASEL,2022,12(21):13.
APA	Li, Yunpeng,冯春,Ding, Chenxi,&Zhang, Yiming.(2022).A Novel Continuous-Discontinuous Multi-Field Numerical Model for Rock Blasting.APPLIED SCIENCES-BASEL,12(21),13.
MLA	Li, Yunpeng,et al."A Novel Continuous-Discontinuous Multi-Field Numerical Model for Rock Blasting".APPLIED SCIENCES-BASEL 12.21(2022):13.