About this Environmental Science article
Stability Assessment of Unlined Real Horseshoe-shaped Tunnels in Anisotropic and Heterogeneous Undrained Clay by Bibhash Kumar; Jagdish Prasad Sahoo is a Environmental Science article available to read on EtoBox.
In the urban underground transportation systems, especially, in case of mechanized tunneling, tunnel boring machine (TBM) of circular shape is mostly used for tunneling advancement. However, circular-shaped TBM particularly of large diameter have large waste of utilization area that is, small space utilization ratio. With the advancement in the machine manufacturing industries, non-circular-shaped TBM is now used, whose cross section allows to use the underground space efficiently to improve space utilization ratio. Despite the significance of this issue, there has not been much prior research reported in the literature for designing and analyzing underground-excavations/tunnels having horseshoe-shaped cross sections in anisotropic-heterogeneous clay. In the present study, peripheral stability analysis of real horseshoe-shaped unlined tunnels in saturated clay with direction reliant and linearly varying undrained shear strength has been performed using lower bound limit analysis coupled with finite elements and second-order cone programming. For a range of material properties and cover depth of tunnel, the stability charts for unlined tunnel have been generated in this study, which
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- Author
- Bibhash Kumar; Jagdish Prasad Sahoo
- Publisher
- Springer Science and Business Media LLC
- Published
- 2023
- Language
- EN
- Field
- Environmental Science (Physical Sciences)