Three-Dimensional Stability Investigation of Trapdoors in Collapse and Blowout Conditions

Shiau, Jim ORCID: https://orcid.org/0000-0002-9220-3184 and Keawsawasvong, Suraparb and Lee, Ji-Sung (2022) Three-Dimensional Stability Investigation of Trapdoors in Collapse and Blowout Conditions. International Journal of Geomechanics, 22 (4):04022007. pp. 1-11. ISSN 1532-3641


Abstract

Road-related sinkholes are of great concerns nowadays, appearing frequently in media stories. In the undrained stability analysis, a dimensionless stability number that is known as Broms and Bennermark's original stability number expresses the combined effect of surface surcharge pressure, self-weight of the soil, and the supporting pressure. This 'critical' undrained stability number, Nc, is used in this paper to formulate three-dimensional (3D) upper-bound and lower-bound solutions in active (collapse) and passive (blowout) scenarios of sinkhole stability using the classic trapdoor problem. Design charts, tables, and equations were developed to cover a wide range of practical design parameters. Together with modern geophysics techniques for the detection of underground cavity as well as the findings of the associated failure patterns in this paper, the study should, therefore, be of value to practitioners in their daily decision making.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Faculty/School / Institute/Centre: Current – Faculty of Health, Engineering and Sciences - School of Engineering (1 Jan 2022 -)
Faculty/School / Institute/Centre: Current – Faculty of Health, Engineering and Sciences - School of Engineering (1 Jan 2022 -)
Date Deposited: 16 Mar 2022 23:43
Last Modified: 21 Sep 2022 00:45
Uncontrolled Keywords: Failure; Finite-element limit analysis; Pipeline; Sinkhole; Stability; Trapdoor
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
Identification Number or DOI: https://doi.org/10.1061/(ASCE)GM.1943-5622.0002339
URI: http://eprints.usq.edu.au/id/eprint/46946

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