Instability of boreholes with slurry

Keawsawasvong, Suraparb and Shiau, Jim ORCID: https://orcid.org/0000-0002-9220-3184 (2021) Instability of boreholes with slurry. International Journal of Geosynthetics and Ground Engineering, 7:81. pp. 1-11. ISSN 2199-9260


Abstract

Drilling slurry has been widely used in the construction of wet-processed borehole excavation, and the stability of such an excavation is of great concern to engineers. In this short note, the problem of borehole stability is revisited using the finite element limit analysis. The study sets out to establish an undrained correlation between stability number and depth ratio of a borehole excavation under axisymmetric condition. To understand several observed phenomena, the effects of slurry pressure and the increasing undrained strength with depth are investigated. The overall aim of the note is to produce practical solutions in the form of design equations for engineer in the field to evaluate the borehole stability using a simple factor of safety.


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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: 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: 27 Oct 2021 05:51
Last Modified: 19 May 2022 02:29
Uncontrolled Keywords: numerical analysis; axisymmetry; stability; borehole;· slurry
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/10.1007/s40891-021-00326-2
URI: http://eprints.usq.edu.au/id/eprint/44005

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