# Simplified Analytical and Numerical Analysis for Stability of Tunnel and Foundation Containing Sloping Ground

Year : 2021 | Volume : | Issue : 2 | Page : 24-34
By

### Md. Foisal Haque

1. PhD Student, Department of Geotechnical Engineering, Bangladesh University of Engineering and Technology, Dhaka, Bangladesh

#### Abstract

Tunnel, foundation and superstructure effect on the stability of slope. Numerical and simplified analytical analyses evaluate behavior of slope under various conditions. However, factor of safety indicates failure criteria of slope. Present research develops some simplified analytical formulae for a specific model and numerical code (PLAXIS 3D) performs finite element analysis of this model. During numerical analysis considers Mohr-Coulomb material model and drained condition. Factor of safety assesses from variations of sloping angles (30°, 35° and 40°) and horizontal distances (0 m, 1 m, 2 m, 3 m, 4 m, 5 m and 6 m) between sloping face and tunnel as well as foundation face. Numerical and analytical results match at zero horizontal distance for each angle of slope. Angle of failure surface varies 27.7, 28.6 and 28.3 percentages of 30°, 35° and 40° slopping angles respectively based on analytical analysis. Little difference between analytical and numerical results of some locations expresses accuracy of newly developed simplified formulae.

## Keywords: Analytical, Failure Surface, Numerical, Tunnel and Foundation, Slope Stability.

How to cite this article: Md. Foisal Haque Simplified Analytical and Numerical Analysis for Stability of Tunnel and Foundation Containing Sloping Ground ijgge 2021; 7:24-34
How to cite this URL: Md. Foisal Haque Simplified Analytical and Numerical Analysis for Stability of Tunnel and Foundation Containing Sloping Ground ijgge 2021 {cited 2021 Dec 30};7:24-34. Available from: https://journals.stmjournals.com/ijgge/article=2021/view=90300/

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Regular Issue Open Access Article

## International Journal of Geological and Geotechnical Engineering

ISSN: 2581-5598
 Volume 7 Issue 2 Received December 1, 2021 Accepted December 7, 2021 Published December 30, 2021