Horseshoe vortices in inhomogeneous flows

Mel’nikova, O. N.; Pokazeev, Konstantin

doi:10.3103/s1062873818010173

Cited by 2 publications

(1 citation statement)

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“…In the environment of high ground stress and high geothermal heat, rocks undergo brittle-duct or brittle-plastic transformation, and the horseshoe-shaped section is widely used in deep tunnels. e horseshoe-shaped tunnel is used in engineering sites, where the surrounding rock is soft, the top and side pressures are high, and the bottom is under pressure due to its superior loading capacity [2][3][4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Study on the Influence of Tectonic Stress on Stability of Horseshoe‐Shaped Tunnels

Wang

Qiu

et al. 2021

Advances in Materials Science and Engineering

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While the tunnel is in the high tectonic stress environment and surrounding rock of tunnel has the characteristics of soft texture and stronger expansion, the preference of tunnel shape is horseshoe. An elastic-plastic model is analyzed by complex function theory in accordance with the deformation characteristics of a horseshoe-shaped tunnel in an engineering site. The numerical model of the tunnel is built by FLAC3D, and the influence of the magnitude and direction of structural stress on the horseshoe-shaped tunnel is studied in detail. Finally, the security support of the tunnel is discussed. Results show that the stress concentration phenomenon is easily focused on the left, right, and bottom sides of the tunnel; these places should therefore be the focus of attention of tunnel stability analysis. The magnitude and direction of tectonic stress greatly affect the stability of the horseshoe-shaped tunnel. Similarly, the magnitude of tectonic stress can significantly affect the deformation state of the tunnel. The direction of tectonic stress mainly reflects the orientation of the tunnel. In addition, the orientation of the tunnel should be arranged along the maximum direction of principal stress.

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Section: Introductionmentioning

confidence: 99%