Blasting induced dynamic response analysis in a rock tunnel based on combined inversion of Laplace transform with elasto-plastic cellular automaton

doi:10.1093/gji/ggaa615

	Blasting induced dynamic response analysis in a rock tunnel based on combined inversion of Laplace transform with elasto-plastic cellular automaton
	Mei, Wanquan 4; Li, Mei 5; Pan, Peng-Zhi 1; Pan, Junfeng 3; Liu, Kunlun 2
刊名	GEOPHYSICAL JOURNAL INTERNATIONAL
	2021-04-01
卷号	225 期号:1 页码:699-710
关键词	Geomechanics Numerical approximations and analysis Wave propagation Wave scattering and diffraction Impact phenomena
ISSN号	0956-540X
DOI	10.1093/gji/ggaa615
英文摘要	The dynamic disturbance from explosion, earthquakes and stress impact may induce rock mass damage around the deep-buried tunnel. Here, we show the dynamic responses triggered by blasting load disturbance. In this paper, the theoretical formulae are first derived to evaluate the time-domain dynamic responses based on the wave function expansion method and the inversion of Laplace transform and then a self-developed numerical code, that is, elasto-plastic cellular automaton (EPCA), a module of CASRock, is subsequently employed to simulate the blasting induced elasto-plastic dynamic responses. It can be found from the analytical solutions that tensile stress concentration at two sidewalls occurs, while compressive counterpart at the roof and floor appears. Moreover, the radial velocity vibrations generate concentration at the two sidewalls, while the circumferential counterparts appear at the roof and floor. The numerical simulations indicate that compression-shear and tensile failure are the major mechanism for the rock mass damage around the rock tunnel. The analytical and numerical results help to understand the velocity vibrations and the major mechanism of rock mass damage and provide theoretical basis for the support of rock tunnel.
资助项目	Major State Basic Research Development Program of China[2017YFC0804203] ; National Natural Science Foundation of China[51621006] ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences[QYZDB-SSW-DQC029]
WOS研究方向	Geochemistry & Geophysics
语种	英语
出版者	OXFORD UNIV PRESS
WOS记录号	WOS:000646864000040
内容类型	期刊论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/27254]
专题	中科院武汉岩土力学所
通讯作者	Pan, Peng-Zhi
作者单位	1.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Hubei, Peoples R China 2.Shenhua Xinjiang Energy Co Ltd, Urumqi 830027, Peoples R China 3.CCTEG Coal Min Res Inst, Beijing 100013, Peoples R China 4.Wuhan Univ Technol, Sch Civil Engn & Architecture, Wuhan 430070, Hubei, Peoples R China 5.Wuhan Univ Technol, Sch Resources & Environm Engn, Wuhan 430070, Hubei, Peoples R China
推荐引用方式 GB/T 7714	Mei, Wanquan,Li, Mei,Pan, Peng-Zhi,et al. Blasting induced dynamic response analysis in a rock tunnel based on combined inversion of Laplace transform with elasto-plastic cellular automaton[J]. GEOPHYSICAL JOURNAL INTERNATIONAL,2021,225(1):699-710.
APA	Mei, Wanquan,Li, Mei,Pan, Peng-Zhi,Pan, Junfeng,&Liu, Kunlun.(2021).Blasting induced dynamic response analysis in a rock tunnel based on combined inversion of Laplace transform with elasto-plastic cellular automaton.GEOPHYSICAL JOURNAL INTERNATIONAL,225(1),699-710.
MLA	Mei, Wanquan,et al."Blasting induced dynamic response analysis in a rock tunnel based on combined inversion of Laplace transform with elasto-plastic cellular automaton".GEOPHYSICAL JOURNAL INTERNATIONAL 225.1(2021):699-710.