Effective velocity of reflected wave in rock mass with different wave impedances of normal incidence of stress wave

Wang, L; Wu, C; Fan, L; Wang, M

Effective velocity of reflected wave in rock mass with different wave impedances of normal incidence of stress wave

Wang, L Wu, C

Fan, L Wang, M

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Publisher:: WILEY
Publication Type:: Journal Article
Citation:: International Journal for Numerical and Analytical Methods in Geomechanics, 2022, 46, (9), pp. 1607-1619
Issue Date:: 2022-06-01

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Field	Value	Language
dc.contributor.author	Wang, L
dc.contributor.author	Wu, C https://orcid.org/0000-0001-6786-7934
dc.contributor.author	Fan, L
dc.contributor.author	Wang, M
dc.date.accessioned	2023-03-26T21:56:55Z
dc.date.available	2023-03-26T21:56:55Z
dc.date.issued	2022-06-01
dc.identifier.citation	International Journal for Numerical and Analytical Methods in Geomechanics, 2022, 46, (9), pp. 1607-1619
dc.identifier.issn	0363-9061
dc.identifier.issn	1096-9853
dc.identifier.uri	http://hdl.handle.net/10453/168431
dc.description.abstract	The effective velocity of the reflected wave in rock mass is of significance to the detection of crustal structure and the geophysical seismic exploration. In this paper, the modified characteristic method was introduced to solve P-wave reflection in rock mass with different wave impedances on two sides of the joint. Effective velocity was defined to characterize the propagation velocity of the reflected wave in jointed rock mass. The effects of incident frequency, joint stiffness and wave impedance ratio on the effective velocity were discussed. The results show that when the stress wave propagation in "hard-to-soft" rock mass, the effective velocity increases firstly and then decreases as the incident frequency and the joint stiffness increase, while the effective velocity always decreases as the wave impedance ratio increases; when the stress wave propagation in "soft-to-hard" rock mass, the effective velocity decreases as the incident frequency increases, increases as the joint stiffness increases and decreases as the wave impedance ratio increases. The wave impedance ratio has an important influence on the effective velocity. The effective velocity without considering wave impedance ratio is smaller than that of stress wave propagation in "soft-to-hard" rock mass, but larger than that of stress wave propagation in "hard-to-soft" rock mass.
dc.language	English
dc.publisher	WILEY
dc.relation.ispartof	International Journal for Numerical and Analytical Methods in Geomechanics
dc.relation.isbasedon	10.1002/nag.3359
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject	0905 Civil Engineering
dc.subject.classification	Geological & Geomatics Engineering
dc.title	Effective velocity of reflected wave in rock mass with different wave impedances of normal incidence of stress wave
dc.type	Journal Article
utslib.citation.volume	46
utslib.for	0905 Civil Engineering
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Civil and Environmental Engineering
pubs.organisational-group	/University of Technology Sydney/Strength - CBI - Centre for Built Infrastructure
utslib.copyright.status	closed_access	*
dc.date.updated	2023-03-26T21:56:53Z
pubs.issue	9
pubs.publication-status	Published
pubs.volume	46
utslib.citation.issue	9

Abstract:

The effective velocity of the reflected wave in rock mass is of significance to the detection of crustal structure and the geophysical seismic exploration. In this paper, the modified characteristic method was introduced to solve P-wave reflection in rock mass with different wave impedances on two sides of the joint. Effective velocity was defined to characterize the propagation velocity of the reflected wave in jointed rock mass. The effects of incident frequency, joint stiffness and wave impedance ratio on the effective velocity were discussed. The results show that when the stress wave propagation in "hard-to-soft" rock mass, the effective velocity increases firstly and then decreases as the incident frequency and the joint stiffness increase, while the effective velocity always decreases as the wave impedance ratio increases; when the stress wave propagation in "soft-to-hard" rock mass, the effective velocity decreases as the incident frequency increases, increases as the joint stiffness increases and decreases as the wave impedance ratio increases. The wave impedance ratio has an important influence on the effective velocity. The effective velocity without considering wave impedance ratio is smaller than that of stress wave propagation in "soft-to-hard" rock mass, but larger than that of stress wave propagation in "hard-to-soft" rock mass.

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http://hdl.handle.net/10453/168431