This article represents the seismic slope stability analysis of earth core rock-fill Tipaimukh Dam under static and dynamic loading conditions. The Tipaimukh area is located at the triple junction of the three continental plates- Indian, Eurasian and Burmese tectonic plate. The area is frequently interrupted by unanticipated geological discontinuities, such as regional and local-scale faults and fractures that behave as a strike-slip and extensional movements. Two kinds of numerical models (A and B) are presented here. Both models consist of five zones and each zone has individual rock mechanical characteristics. Model A assumes safety factor of dam slope associated with impervious core including clay material. Model B assumes also safety factor associated with masonry wall as an impervious core. The present numerical modeling results reveal that under static condition of the dam the safety factor ranges from 2.56 to 2.69. On the contrary, under seismic/dynamic loading conditions associated with earthquake M6.0 to M8.5, the safety factor ranges from 1.60 to 0.98 for model A, and from 1.66 to 0.98 for model B. The past records of the historical earthquakes in north-eastern India reveal that the recurrence period of intensive magnitude earthquakes, as experienced in Assam, Shillong plateau and Manipur area, is 38 to 53 years. The calculated safety factor of the Tipaimukh Dam implies that the dam would be destroyed if it would be affected by earthquakes magnitude over 7.0 throughout its operational life, which is usually extent from 50 to 100 years.
| Published in | Earth Sciences (Volume 2, Issue 3) |
| DOI | 10.11648/j.earth.20130203.12 |
| Page(s) | 73-87 |
| Creative Commons |
This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited. |
| Copyright |
Copyright © The Author(s), 2013. Published by Science Publishing Group |
Tipaimukh, Earth & Rockfill Dam, Regional Seismicity, Numerical Modeling, Safety Factor
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APA Style
Md. Rafiqul Islam, Mohammed Omar Faruque. (2013). Seismic Slope Stability of the Tipaimukh Dam of North-Eastern India: A Numerical Modelling Approach. Earth Sciences, 2(3), 73-87. https://doi.org/10.11648/j.earth.20130203.12
ACS Style
Md. Rafiqul Islam; Mohammed Omar Faruque. Seismic Slope Stability of the Tipaimukh Dam of North-Eastern India: A Numerical Modelling Approach. Earth Sci. 2013, 2(3), 73-87. doi: 10.11648/j.earth.20130203.12
AMA Style
Md. Rafiqul Islam, Mohammed Omar Faruque. Seismic Slope Stability of the Tipaimukh Dam of North-Eastern India: A Numerical Modelling Approach. Earth Sci. 2013;2(3):73-87. doi: 10.11648/j.earth.20130203.12
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Download@article{10.11648/j.earth.20130203.12,
author = {Md. Rafiqul Islam and Mohammed Omar Faruque},
title = {Seismic Slope Stability of the Tipaimukh Dam of North-Eastern India: A Numerical Modelling Approach},
journal = {Earth Sciences},
volume = {2},
number = {3},
pages = {73-87},
doi = {10.11648/j.earth.20130203.12},
url = {https://doi.org/10.11648/j.earth.20130203.12},
eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.earth.20130203.12},
abstract = {This article represents the seismic slope stability analysis of earth core rock-fill Tipaimukh Dam under static and dynamic loading conditions. The Tipaimukh area is located at the triple junction of the three continental plates- Indian, Eurasian and Burmese tectonic plate. The area is frequently interrupted by unanticipated geological discontinuities, such as regional and local-scale faults and fractures that behave as a strike-slip and extensional movements. Two kinds of numerical models (A and B) are presented here. Both models consist of five zones and each zone has individual rock mechanical characteristics. Model A assumes safety factor of dam slope associated with impervious core including clay material. Model B assumes also safety factor associated with masonry wall as an impervious core. The present numerical modeling results reveal that under static condition of the dam the safety factor ranges from 2.56 to 2.69. On the contrary, under seismic/dynamic loading conditions associated with earthquake M6.0 to M8.5, the safety factor ranges from 1.60 to 0.98 for model A, and from 1.66 to 0.98 for model B. The past records of the historical earthquakes in north-eastern India reveal that the recurrence period of intensive magnitude earthquakes, as experienced in Assam, Shillong plateau and Manipur area, is 38 to 53 years. The calculated safety factor of the Tipaimukh Dam implies that the dam would be destroyed if it would be affected by earthquakes magnitude over 7.0 throughout its operational life, which is usually extent from 50 to 100 years.},
year = {2013}
}
TY - JOUR T1 - Seismic Slope Stability of the Tipaimukh Dam of North-Eastern India: A Numerical Modelling Approach AU - Md. Rafiqul Islam AU - Mohammed Omar Faruque Y1 - 2013/06/20 PY - 2013 N1 - https://doi.org/10.11648/j.earth.20130203.12 DO - 10.11648/j.earth.20130203.12 T2 - Earth Sciences JF - Earth Sciences JO - Earth Sciences SP - 73 EP - 87 PB - Science Publishing Group SN - 2328-5982 UR - https://doi.org/10.11648/j.earth.20130203.12 AB - This article represents the seismic slope stability analysis of earth core rock-fill Tipaimukh Dam under static and dynamic loading conditions. The Tipaimukh area is located at the triple junction of the three continental plates- Indian, Eurasian and Burmese tectonic plate. The area is frequently interrupted by unanticipated geological discontinuities, such as regional and local-scale faults and fractures that behave as a strike-slip and extensional movements. Two kinds of numerical models (A and B) are presented here. Both models consist of five zones and each zone has individual rock mechanical characteristics. Model A assumes safety factor of dam slope associated with impervious core including clay material. Model B assumes also safety factor associated with masonry wall as an impervious core. The present numerical modeling results reveal that under static condition of the dam the safety factor ranges from 2.56 to 2.69. On the contrary, under seismic/dynamic loading conditions associated with earthquake M6.0 to M8.5, the safety factor ranges from 1.60 to 0.98 for model A, and from 1.66 to 0.98 for model B. The past records of the historical earthquakes in north-eastern India reveal that the recurrence period of intensive magnitude earthquakes, as experienced in Assam, Shillong plateau and Manipur area, is 38 to 53 years. The calculated safety factor of the Tipaimukh Dam implies that the dam would be destroyed if it would be affected by earthquakes magnitude over 7.0 throughout its operational life, which is usually extent from 50 to 100 years. VL - 2 IS - 3 ER -
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