Investigations into the Rock Dynamic Response under Blasting Load by an Improved DDA Approach

doi:10.1155/2021/8827022

	Investigations into the Rock Dynamic Response under Blasting Load by an Improved DDA Approach
	Xie, Biting 1,4; Zhang, Xiuli 4; Wang, Hao 4; Jiao, Yuyong 3; Zheng, Fei 2
刊名	ADVANCES IN CIVIL ENGINEERING
	2021-02-08
卷号	2021 页码:10
ISSN号	1687-8086
DOI	10.1155/2021/8827022
英文摘要	Evaluation of blasting-induced rock damage and fragmentation is very important for safety control of construction in the jointed rock mass. The discontinuous numerical models are commonly applied due to the advantages in modeling fragmentation and treating discontinuities. In this paper, the rock fracturing algorithm and rate dependent strength law are incorporated into the discontinuous deformation analysis (DDA) to study the wave propagation and rock fragmentation phenomena in dynamic problems. By reproducing Hopkinson pressure bar tests under different loading rates, the improved method is validated to be capable of solving dynamic failure problem. Finally, taking the Xiucun tunnel as an example, its failure process under the action of the explosive wave is simulated, and some failure features are captured. In addition, the explosion wave propagation and its induced particle vibration in surrounding rock are studied. The reasonable simulation results indicate that the modified DDA method can effectively model the stress wave propagation and joint growth process in the jointed rock under blasting load.
资助项目	National Key Research and Development Program of China[2017YFC1501304] ; National Natural Science Foundation of China[41772328] ; National Natural Science Foundation of China[11672360]
WOS研究方向	Construction & Building Technology ; Engineering
语种	英语
出版者	HINDAWI LTD
WOS记录号	WOS:000621824300013
内容类型	期刊论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/25873]
专题	中科院武汉岩土力学所
通讯作者	Zhang, Xiuli
作者单位	1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Leibniz Univ Hannover, Fac Math & Phys, D-30167 Hannover, Germany 3.China Univ Geosci, Wuhan 430074, Peoples R China 4.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China
推荐引用方式 GB/T 7714	Xie, Biting,Zhang, Xiuli,Wang, Hao,et al. Investigations into the Rock Dynamic Response under Blasting Load by an Improved DDA Approach[J]. ADVANCES IN CIVIL ENGINEERING,2021,2021:10.
APA	Xie, Biting,Zhang, Xiuli,Wang, Hao,Jiao, Yuyong,&Zheng, Fei.(2021).Investigations into the Rock Dynamic Response under Blasting Load by an Improved DDA Approach.ADVANCES IN CIVIL ENGINEERING,2021,10.
MLA	Xie, Biting,et al."Investigations into the Rock Dynamic Response under Blasting Load by an Improved DDA Approach".ADVANCES IN CIVIL ENGINEERING 2021(2021):10.