Numerical modelling of three-dimensional sinkhole stability using finite different method

Shiau, Jim ORCID: https://orcid.org/0000-0002-9220-3184 and Mirza Hassan, Mohammad (2021) Numerical modelling of three-dimensional sinkhole stability using finite different method. Innovative Infrastructure Solutions, 6 (4):183. ISSN 2364-4176


Abstract

The stability of a cavity underlying homogeneous clay in an unsupported greenfield condition is examined in this paper using the finite difference program, FLAC. Shear strength reduction method (SSRM) is utilised to study two- and three-dimensional failure mechanisms of a horizontal trapdoor. Stability results are presented in the forms of factors of safety (FoS) and failure extent ratios for various dimensionless ratios. Numerical results are compared with the finite element limit analysis technique with upper and lower bound theorems, and a good agreement is found between the solutions. Several practical examples are provided to demonstrate the use of design charts and tables.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Permanent restricted access to Published version in accordance with the copyright policy of the publisher.
Faculty/School / Institute/Centre: Current - Faculty of Health, Engineering and Sciences - School of Civil Engineering and Surveying (1 Jul 2013 -)
Faculty/School / Institute/Centre: Current - Faculty of Health, Engineering and Sciences - School of Civil Engineering and Surveying (1 Jul 2013 -)
Date Deposited: 09 Sep 2021 04:22
Last Modified: 18 Oct 2021 00:09
Uncontrolled Keywords: sinkholes; factor of safety; strength reduction method; clay; finite different method; FLAC
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/10.1007/s41062-021-00559-0
URI: http://eprints.usq.edu.au/id/eprint/43527

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