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

Microseismics for cavern stability evaluation of a powerhouse structure after excavation

Authors
Kumar Vikalp, N. Gopalakrishnan, Cherukuri Sivakumar
Corresponding Author
Kumar Vikalp
Available Online November 2016.
DOI
https://doi.org/10.2991/rare-16.2016.73How to use a DOI?
Keywords
Microseismics; rockburst; TVHPP;cavern stability
Abstract
The powerhouse of Tapovan Vishnugad Hydropower project (TVHPP) of NTPC is located in the tail of the Great Himalaya range in the Chamoli district, Uttrakhand and is located at +300m depth having adverse geological conditions. The project area is situated near the northern side of MCT around 2.0 Km and lies in the seismic zone V of India. This site encounters a number of rockburst during and after excavation at various places which may be due to the stress redistribution.This paper discusses the designing and primary application of microseismic monitoring technique after post excavation in rocks. A microseismic network has been installed at the powerhouse site of a hydropower project to study the strata conditions and redistribution of stresses after excavation. This paper discusses the microseismic network design based on the existing geological reports, rockburst history, feasibility of drilling and many other parameters. The monitoring system consists of a three dimensional array of sensors, data acquisition unit, cable layout, and an underground laboratory equipped with communication equipment, data acquisition, processing and interpretation software.The primary monitoring period identifies the potential failure zone of rock fracture in the powerhouse by studying different source parameters and provides the information about the stability of the structure
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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-16.2016.73How 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  - Kumar Vikalp
AU  - N. Gopalakrishnan
AU  - Cherukuri Sivakumar
PY  - 2016/11
DA  - 2016/11
TI  - Microseismics for cavern stability evaluation of a powerhouse structure after excavation
BT  - Recent Advances in Rock Engineering (RARE 2016)
PB  - Atlantis Press
SN  - 2352-5401
UR  - https://doi.org/10.2991/rare-16.2016.73
DO  - https://doi.org/10.2991/rare-16.2016.73
ID  - Vikalp2016/11
ER  -