Proceedings of the conference on Recent Advances in Rock Engineering (RARE 2016)

Influence of topography on in situ stress parameter at the proposed powerhouse sites of Rupaligad Re-regulating Project, Nepal

Authors
D.S. Subrahmanyam, G. Shyam, K. Vamshidhar, S. Vikram
Corresponding Author
D.S. Subrahmanyam
Available Online November 2016.
DOI
https://doi.org/10.2991/rare-16.2016.63How to use a DOI?
Keywords
Hydraulic testing on pre-existing fractures (HTPF); Stress; Powerhouse; Maximum compression; Topography
Abstract
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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Proceedings
Recent Advances in Rock Engineering (RARE 2016)
Part of series
Advances in Engineering Research
Publication Date
November 2016
ISBN
978-94-6252-260-2
ISSN
2352-5401
DOI
https://doi.org/10.2991/rare-16.2016.63How to use a DOI?
Open Access
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  -