Please use this identifier to cite or link to this item:
http://hdl.handle.net/10397/95092
DC Field | Value | Language |
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dc.contributor | Department of Civil and Environmental Engineering | en_US |
dc.contributor | Research Institute for Sustainable Urban Development | en_US |
dc.contributor | Department of Civil and Environmental Engineering | en_US |
dc.contributor | Research Institute for Sustainable Urban Development | en_US |
dc.creator | Yang, H | en_US |
dc.creator | Duan, HF | en_US |
dc.creator | Zhu, JB | en_US |
dc.date.accessioned | 2022-09-14T08:20:01Z | - |
dc.date.available | 2022-09-14T08:20:01Z | - |
dc.identifier.issn | 1755-1307 | en_US |
dc.identifier.uri | http://hdl.handle.net/10397/95092 | - |
dc.description | 11th Conference of Asian Rock Mechanics Society, 21-25 October 2021, Beijing, China | en_US |
dc.language.iso | en | en_US |
dc.publisher | Institute of Physics Publishing | en_US |
dc.rights | Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence (https://creativecommons.org/licenses/by/3.0/). Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. Published under licence by IOP Publishing Ltd | en_US |
dc.rights | The following publication Yang, H., Duan, H. F., & Zhu, J. B. (2021, October). Ultrasonic S-wave responses of single rock joints filled with wet bentonite clay. In IOP Conference Series: Earth and Environmental Science (Vol. 861, No. 2, p. 022041). IOP Publishing is available at https://doi.org/10.1088/1755-1315/861/2/022041 | en_US |
dc.title | Ultrasonic S-wave responses of single rock joints filled with wet bentonite clay | en_US |
dc.type | Journal/Magazine Article | en_US |
dc.identifier.volume | 861 | en_US |
dc.identifier.issue | 2 | en_US |
dc.identifier.doi | 10.1088/1755-1315/861/2/022041 | en_US |
dcterms.abstract | Clay minerals are prevalent in rock discontinuities and have significant effects on mechanical, hydraulic and seismic properties of rock masses. Understanding seismic behaviours across individual clay-rich rock joints is of great importance in the fields of geology and earth sciences. However, the wave responses of individual clay-rich rock joints have not been well understood until now. This paper reports a laboratory investigation of ultrasonic S-wave propagation and attenuation across single rock joints filled with bentonite clays with varying degree of water saturation. In this study, a series of acoustic measurements were conducted on specimens of the bentonite clay-filled rock joint using a self-developed ultrasonic pulse-transmission test system that equipped with a S-wave transducer pair with a dominant frequency of 250 kHz. Based on the obtained laboratory data, the wave velocity, transmission ratio and the time-frequency-energy distribution of the S-waves transmitted through the bentonite clay-filled joint were calculated and evaluated. The experimental results show that the degree of water saturation of the bentonite clay greatly affects S-wave responses of the filled rock joint. In particular, an increase in the degree of saturation causes a nonlinear decrease in S-wave velocity. In addition, as the water saturation of the bentonite clay increases, the wave attenuation decreases; the minimum wave attenuation is reached at a saturation degree of 71.4% and then the attenuation increases slightly. Additionally, with the increase of the water saturation, the magnitudes of the S-wave energy transmitted across the bentonite clay-filled joint firstly increases and then decreases. The S-wave energy is mostly stored in the frequency range of 150 - 300 kHz regardless of the degree of water saturation of the bentonite clay. This finding indicates that the frequency partition of the transmitted S-waves rarely changes with the changing water saturation. The present work could not only compensate for the lack of laboratory-based research on wave behaviours across clay-rich rock joints but also provides insights into the interpretation of acoustic data from field tests for detecting, characterizing and monitoring rock discontinuities. | en_US |
dcterms.accessRights | open access | en_US |
dcterms.bibliographicCitation | IOP conference series : earth and environmental science, Oct. 2021, v. 861, no. 2, 022041 | en_US |
dcterms.isPartOf | IOP conference series : earth and environmental science | en_US |
dcterms.issued | 2021-10 | - |
dc.identifier.scopus | 2-s2.0-85118950785 | - |
dc.relation.conference | Conference of Asian Rock Mechanics Society | en_US |
dc.identifier.eissn | 1755-1315 | en_US |
dc.identifier.artn | 022041 | en_US |
dc.description.validate | 202209 bcfc | en_US |
dc.description.oa | Version of Record | en_US |
dc.identifier.FolderNumber | CEE-0123 | - |
dc.description.fundingSource | RGC | en_US |
dc.description.fundingSource | Others | en_US |
dc.description.fundingText | Program for Guangdong Introducing Innovative and Entrepreneurial Teams | en_US |
dc.description.pubStatus | Published | en_US |
dc.identifier.OPUS | 58580634 | - |
dc.description.oaCategory | CC | en_US |
Appears in Collections: | Journal/Magazine Article |
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Yang_Ultrasonic_S-wave_responses.pdf | 824.01 kB | Adobe PDF | View/Open |
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