Sinkhole Stability in Elliptical Cavity under Collapse and Blowout Conditions
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 ellip...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-10-01
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| Series: | Geosciences |
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| Online Access: | https://www.mdpi.com/2076-3263/11/10/421 |
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| author | Jim Shiau Suraparb Keawsawasvong Bishal Chudal Kiritharan Mahalingasivam Sorawit Seehavong |
| author_facet | Jim Shiau Suraparb Keawsawasvong Bishal Chudal Kiritharan Mahalingasivam Sorawit Seehavong |
| author_sort | Jim Shiau |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-03-10T06:31:50Z |
| format | Article |
| id | doaj.art-82eb097332fc44e4a6d1ada7312f529d |
| institution | Directory Open Access Journal |
| issn | 2076-3263 |
| language | English |
| last_indexed | 2024-03-10T06:31:50Z |
| publishDate | 2021-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Geosciences |
| spelling | doaj.art-82eb097332fc44e4a6d1ada7312f529d2023-11-22T18:23:42ZengMDPI AGGeosciences2076-32632021-10-01111042110.3390/geosciences11100421Sinkhole Stability in Elliptical Cavity under Collapse and Blowout ConditionsJim Shiau0Suraparb Keawsawasvong1Bishal Chudal2Kiritharan Mahalingasivam3Sorawit Seehavong4School of Civil Engineering and Surveying, University of Southern Queensland, Toowoomba, QLD 4350, AustraliaDepartment of Civil Engineering, Thammasat School of Engineering, Thammasat University, Pathumthani 12120, ThailandSchool of Civil Engineering and Surveying, University of Southern Queensland, Toowoomba, QLD 4350, AustraliaSchool of Civil Engineering and Surveying, University of Southern Queensland, Toowoomba, QLD 4350, AustraliaDepartment of Civil Engineering, Thammasat School of Engineering, Thammasat University, Pathumthani 12120, ThailandRoad 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.https://www.mdpi.com/2076-3263/11/10/421sinkholeblowoutcollapsestabilitypressure ratiopipeline defect |
| spellingShingle | Jim Shiau Suraparb Keawsawasvong Bishal Chudal Kiritharan Mahalingasivam Sorawit Seehavong Sinkhole Stability in Elliptical Cavity under Collapse and Blowout Conditions Geosciences sinkhole blowout collapse stability pressure ratio pipeline defect |
| title | Sinkhole Stability in Elliptical Cavity under Collapse and Blowout Conditions |
| title_full | Sinkhole Stability in Elliptical Cavity under Collapse and Blowout Conditions |
| title_fullStr | Sinkhole Stability in Elliptical Cavity under Collapse and Blowout Conditions |
| title_full_unstemmed | Sinkhole Stability in Elliptical Cavity under Collapse and Blowout Conditions |
| title_short | Sinkhole Stability in Elliptical Cavity under Collapse and Blowout Conditions |
| title_sort | sinkhole stability in elliptical cavity under collapse and blowout conditions |
| topic | sinkhole blowout collapse stability pressure ratio pipeline defect |
| url | https://www.mdpi.com/2076-3263/11/10/421 |
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