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A Numerical Study on the Effect of Different Tunnel Shapes in Squeezing Rocks
https://orcid.org/http://orcid.org/0000-0002-1298-6917
Squeezing failure is commonly observed when excavating tunnels in weak rocks in high in situ stress conditions. When the existing rock is removed from the rock mass, the in situ stresses redistribute itself, resulting in possible overstressing in the proximity of excavation with excessive deformation, which ultimately may lead to failure. Avoiding squeezing type failure is always a serious concern in tunnelling and is a field of active research for decades. Researchers have come out with several solutions for the quantification of squeezing and the corresponding failure in squeezing type rocks. Despite many studies, squeezing failure is unavoidable because most of the solutions might be lacking in comprehensive input parameters in reference to real-field conditions that influence excessive tunnel deformation. In the present study, key influencing parameters such as tunnel shape, in situ stress and rock mass characteristic are considered while doing numerical studies. Three tunnel shapes are analysed using the numerical tool FLAC under varying the above-mentioned parameters. The behaviour of rock mass is observed subjected to varying parameters, and the conclusion is drawn based on the obtained results.
A Numerical Study on the Effect of Different Tunnel Shapes in Squeezing Rocks
https://orcid.org/http://orcid.org/0000-0002-1298-6917
Squeezing failure is commonly observed when excavating tunnels in weak rocks in high in situ stress conditions. When the existing rock is removed from the rock mass, the in situ stresses redistribute itself, resulting in possible overstressing in the proximity of excavation with excessive deformation, which ultimately may lead to failure. Avoiding squeezing type failure is always a serious concern in tunnelling and is a field of active research for decades. Researchers have come out with several solutions for the quantification of squeezing and the corresponding failure in squeezing type rocks. Despite many studies, squeezing failure is unavoidable because most of the solutions might be lacking in comprehensive input parameters in reference to real-field conditions that influence excessive tunnel deformation. In the present study, key influencing parameters such as tunnel shape, in situ stress and rock mass characteristic are considered while doing numerical studies. Three tunnel shapes are analysed using the numerical tool FLAC under varying the above-mentioned parameters. The behaviour of rock mass is observed subjected to varying parameters, and the conclusion is drawn based on the obtained results.
A Numerical Study on the Effect of Different Tunnel Shapes in Squeezing Rocks
https://orcid.org/http://orcid.org/0000-0002-1298-6917
Squeezing failure is commonly observed when excavating tunnels in weak rocks in high in situ stress conditions. When the existing rock is removed from the rock mass, the in situ stresses redistribute itself, resulting in possible overstressing in the proximity of excavation with excessive deformation, which ultimately may lead to failure. Avoiding squeezing type failure is always a serious concern in tunnelling and is a field of active research for decades. Researchers have come out with several solutions for the quantification of squeezing and the corresponding failure in squeezing type rocks. Despite many studies, squeezing failure is unavoidable because most of the solutions might be lacking in comprehensive input parameters in reference to real-field conditions that influence excessive tunnel deformation. In the present study, key influencing parameters such as tunnel shape, in situ stress and rock mass characteristic are considered while doing numerical studies. Three tunnel shapes are analysed using the numerical tool FLAC under varying the above-mentioned parameters. The behaviour of rock mass is observed subjected to varying parameters, and the conclusion is drawn based on the obtained results.
A Numerical Study on the Effect of Different Tunnel Shapes in Squeezing Rocks
Indian Geotech J
Manasa, H. (author) / Maji, V. B. (author)
Indian Geotechnical Journal ; 54 ; 1174-1186
2024-08-01
13 pages
Article (Journal)
Electronic Resource
English
A Numerical Study on the Effect of Different Tunnel Shapes in Squeezing Rocks
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