BibTeX:

@article{IJIRSTV4I6017,
     title={Rock Deformation by Extesometers for Underground Powerhouse of Sardar Sarovar Project (Gujarat)},
     author={R. S. Sehra and S. L. Gupta},
     journal={International Journal for Innovative Research in Science & Technology},
     volume={4},
     number={6},
     pages={57--61},
     year={},
     url={http://www.ijirst.org/articles/IJIRSTV4I6017.pdf},
     publisher={IJIRST (International Journal for Innovative Research in Science & Technology)},
}

Any point inside the mountain is subjected to stresses from all the directions. Excavation of any cavity like an underground power house or boring of a tunnel, results in the release and readjustment of three dimensional stresses around the cavity. This results in displacements/ deformations which are time dependent. Extensometer is used to measure deformation of a section of rock mass and adjacent surrounding strata with the help of anchors at different depths. The depth of anchor varies with the type of rock strata and the location of the fixed point with respect to which the deformations are to be measured. This paper deals with the instrumentation for deformation of rock mass using extensometers in underground powerhouse of Sardar Sarovar Project, Gujarat for long term monitoring along with results and conclusion.

Instrumentation, Underground Powerhouse, MPBX, SPBX, Deformation etc.