Shiau, Jim 
ORCID: https://orcid.org/0000-0002-9220-3184 and Keawsawasvong, Suraparb and Chudal, Bishal and Mahalingasivam, Kiritharan and Seehavong, Sorawit
(2021)
Sinkhole stability in elliptical cavity under collapse and
blowout conditions.
Geosciences, 11:421.
pp. 1-15.
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Text (Published Version)
geosciences-11-00421-v2.pdf Available under License Creative Commons Attribution 4.0. Download (2MB) | Preview |
Abstract
Road subsidence and sinkhole failures due to shallow cavities formed by defective water main have increased in recent decades and become one of the important research topics in geotechnical engineering. The present paper numerically studies the stability and its associated failure mechanism of ellipse-shaped cavity above defective water mains using the finite element limit analysis technique. For a wide range of geometrical parameters, the pressure ratio method is used to formulate the stability solutions in both blowout and collapse scenarios. Even though there is no published solution for elliptical cavities under blowout failure conditions, the obtained numerical results are compared with available circular solutions. Several conclusions are drawn based on the failure mechanism study of the various ellipse shape transformations in this study, whilst design charts and equations proposed for practical uses.
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| Item Type: | Article (Commonwealth Reporting Category C) |
|---|---|
| Refereed: | Yes |
| Item Status: | Live Archive |
| Additional Information: | Copyright: © 2021 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). |
| Faculty/School / Institute/Centre: | Historic - Faculty of Health, Engineering and Sciences - School of Civil Engineering and Surveying (1 Jul 2013 - 31 Dec 2021) |
| Faculty/School / Institute/Centre: | Historic - Faculty of Health, Engineering and Sciences - School of Civil Engineering and Surveying (1 Jul 2013 - 31 Dec 2021) |
| Date Deposited: | 15 Oct 2021 05:23 |
| Last Modified: | 09 Sep 2022 02:45 |
| Uncontrolled Keywords: | sinkhole; blowout; collapse; stability; pressure ratio; pipeline defect |
| Fields of Research (2008): | 09 Engineering > 0905 Civil Engineering > 090501 Civil Geotechnical Engineering |
| Fields of Research (2020): | 40 ENGINEERING > 4005 Civil engineering > 400502 Civil geotechnical engineering |
| Socio-Economic Objectives (2008): | E Expanding Knowledge > 97 Expanding Knowledge > 970109 Expanding Knowledge in Engineering |
| Socio-Economic Objectives (2020): | 28 EXPANDING KNOWLEDGE > 2801 Expanding knowledge > 280110 Expanding knowledge in engineering |
| Identification Number or DOI: | https://doi.org/10.3390/geosciences11100421 |
| URI: | http://eprints.usq.edu.au/id/eprint/43884 |
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