@article{Ali_Rehman_Abdullah_Xie_Ban_2022, title={TOPOGRAPHY INDUCED STRESS AND ITS INFLUENCE ON TUNNEL EXCAVATION IN HARD ROCKS – A NUMERICAL APPROACH}, volume={22}, url={https://geomatejournal.com/geomate/article/view/3290}, abstractNote={<p>In-situ stress characterisation is essential for anticipating the viability of underground structures. In areas with rugged topography, the in-situ stress varies within short distances and cannot be characterized by limited in-situ stress measurements. The in-situ stress at a point below the ground surface results from the combined effect of topography, tectonic forces, material properties and many others. The impact of topography on subsurface in-situ stress can be significant in areas with rugged topography. In this study, 3D finite element modelling utilising the Digital Elevation Model of a tunnelling project site is used to characterise the in-situ stress. Gravity loading was assumed to simulate the impact of topography on the subsurface in-situ state of stress. The reliability of the results was validated by analysing the stress-induced brittle failures in a section of the tunnel. The simulated in-situ principal stresses and the corresponding stress-induced failure zones were in good agreement with the actual observations in the tunnel. The results suggest that the present-day topography dominates the in-situ stress in the study area.</p>}, number={94}, journal={GEOMATE Journal}, author={Ali, Wahid and Rehman, Hafeezur and Abdullah, Rini and Xie, Qiang and Ban, Yuxin}, year={2022}, month={Jun.}, pages={93–101} }