Influence of topography on in situ stress parameter at the proposed powerhouse sites of Rupaligad Re-regulating Project, Nepal
D.S. Subrahmanyam, G. Shyam, K. Vamshidhar, S. Vikram
Available Online November 2016.
- https://doi.org/10.2991/rare-16.2016.63How to use a DOI?
- Hydraulic testing on pre-existing fractures (HTPF); Stress; Powerhouse; Maximum compression; Topography
- In-situ stress parameters of the rock mass are one of the vital inputs for the design of any large underground openings. In general, the in-situ stress magnitude and orientation are influenced by topography, and major geological structures like folds, faults and intrusions. These structures bring about local heterogeneities in rocks, thus leading to change in orientation of stress trajectories. In this paper we would like to present a case study about the influence of topography/ valley on in situ stress measurements carried out at a hydroelectric project site. The stress measurements were carried out by HTPF method on both left and right banks of the river at the proposed powerhouse sites. The test site/borehole location of left bank is in close proximity to valley compared to its counterpart. The (in-situ stress) major horizontal principal stress direction of the rock mass is N 200 and N 1300 at right and left banks respectively. It is inferred that the horizontal stresses might have been relaxed due to the absence of influence of topography on the right bank whereas the direction of in-situ stress tensor at the left bank might be perturbed by topography due to the close proximity of the valley
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- This is an open access article distributed under the CC BY-NC license.
Cite this article
TY - CONF AU - D.S. Subrahmanyam AU - G. Shyam AU - K. Vamshidhar AU - S. Vikram PY - 2016/11 DA - 2016/11 TI - Influence of topography on in situ stress parameter at the proposed powerhouse sites of Rupaligad Re-regulating Project, Nepal BT - Recent Advances in Rock Engineering (RARE 2016) PB - Atlantis Press SN - 2352-5401 UR - https://doi.org/10.2991/rare-16.2016.63 DO - https://doi.org/10.2991/rare-16.2016.63 ID - Subrahmanyam2016/11 ER -