Determination of Stability During First Impounding in Jatigede Earth Dam

https://doi.org/10.22146/jag.48592

Teuku Faisal Fathani(1*), Anafi Minmahddun(2), Fikri Faris(3)

(1) Department of Civil and Environmental Engineering, Universitas Gadjah Mada
(2) Department of Civil and Environmental Engineering, Universitas Gadjah Mada
(3) Center for Disaster Mitigation and Technological Innovation (GAMA-InaTek), Universitas Gadjah Mada
(*) Corresponding Author

Abstract


The Jatigede Dam is a multi-purpose rockfill dam located in Sumedang Regency, West Java Province. The construction of the Jatigede Dam started in 2008 and it is the second largest dam in Indonesia after the Jatiluhur Dam. As one of the vital facilities, it is highly necessary to evaluate the stability of the Jatigede Dam to avoid dam collapse. First reservoir filling is one of the factors affecting the dam stability; therefore, this research aims to evaluate the Jatigede Dam stability during impounding. The transient seepage analysis was conducted to evaluate the pore pressure change during impounding. The result of seepage analysis was used to analyze the dam stability using the limit equilibrium method with Rockscience software of Slide2. The results of the seepage analysis shows that the rise of the reservoir water level affects the upstream slope stability. The safety factor of the upstream slope changes during the impounding process. All thesafety factors for the upstream and downstream slopes during impounding still meet theminimum safety factor criteria required.

 


Keywords


Rockfill dam, Seepage , Pore water pressure , Slope stability, Safety factor , Slide2.

Full Text:

PDF


References

Abramson, L. W., Lee, T. S., Sharma, S. and Boyce, G. M. (2002) Slope Stability and Stabilization Method. 2 nd Ed. New York: John Wiley & Sons.

Afiri, R. and Gabi, S. (2018) Finite element slope stability analysis of Souk Tleta dam by shear strength reduction technique. Innovative Infrastructure Geotechnology, pp. 1-10.

Andreea, C. (2016) Unsaturated Slope Stability and Seepage Analysis of a Dam. Energy Procedia, pp. 93-98.

Bishop, A. (1954) The use of slip circle in the stability analysis of slope. Geotechnique, pp. 7-17. Casagrande, A. (1937) Seepgae through Dams. Journal of the New England Water Works Associations, pp. 131-172.

Cojean , R. and Cai, Y. (2011) Analysis and Modeling of Slope Stability in the Three-Gorges Dam Reservoir (China)-The Case of Huangtupo Landslide. Journal of Mountain Science, Volume 8, pp. 166-175.

Craig, R. (2004) Craig’s Soil Mechanics. London: Spon Press. Das, B. M., 2010. Principles of Geotechnical Engineering. 7th ed. Stamford: Cengage Learning.

Fathani, T. F. (2012) Study on instability process and failure mechanism of situ gintung earth dam. Proc. of the 10 th Anniversary of ICL, pp. 65-71.

Fathani, T. F. and Legono, D. (2011) Seepage and stability analysis of earth dam due to the rising of upstream water level. Proc. of Seminar Teknik, Faculty of Engineering, Universitas Gadjah Mada, pp. D-61-D66.

Fathani, T. F. and Legono, D. (2012) Dynamics of Earth Dam Stability caused by Rapid Rasing and Drawdown of Water Level. Proceedings of The 3rd International Workshop On Multimodal Sediment Disasters, pp. E11-E18.

Fredlund, D. and Rahardjo, H. (1993) Soil Mechanics For Unsaturated Soils. Canada: John Wiley & Sons.

Himanshu, N. and Burman, A. (2017) Seepage and Stability Analysis of Durgawati Earthen Dam: A Case Study. Indian Geotechnical Journal, pp. 1-20.

Iverson, R. M. (2000) Landslide triggering by rain infiltration. Water Resources Research, Volume 36, pp. 1897-1910.

Janbu, N. (1973) Slope stability computations. In: Embankment dam—engineering. New York: Wiley, pp. 47-86.

Kohv, M. and Hang, T. (2013) Pore Pressure Fluctuations Within Quasi-Stable Slopes in SouthWestern Estonia and Their Influence on Slope Stability. Landslide Science and Practice, pp. 79-85.

Kutzner, C. (1997) Earth And Rockfill Dams. Rotterdam: A.A. Balkema. Morgenstern, N. and Price, V. (1965) The analysis of the stability. Geotechnique, 15(1), pp. 79-93.

Picarelli, L., Urcioli, G. and Russo, C. (2003) Effect of groundwater regime on the behaviour of clayey slopes. Canadian Geotechnical Journal, pp. 467-484.

Rulon, J. J. and Freeze, R. A. (1985) Mulitple seepage faces on layered slopes and their implication for slope-stability analysis. Canadian Geotechnical Journal, pp. 347-356.

SNI 8064:2016 (2016) Metode Analisis Stabilitas Lereng Statik Bendungan Tipe Urugan. Jakarta: Badan Standarisasi Nasional.

Spencer, E. (1967) A method of the analysis of the stability of embankments assuming parallel interslice forces. Géotechnique, pp. 11-26.

SWHI (2013) Jatigede Dam Project Design SumJournal of Applied Geology 9 MINMAHDDUN et al. mary Report, P.R. China: Sichuan Water Resources and Hydroelectric Investigation.

Thong, N. H. (2013) Development of Slope Mass Stability Assessment In Tropical Region Around Jatigede Dam Project, Sumedang Regency, West Java, Indonesia, Yogyakarta: Universitas Gadjah Mada.

Yuewe, L., Huixin, C., Qingquan, L., Xin, G., Dawei, Z., Lianxiang, L. (2005) Experimental study on pore pressure in rock-soil slope during reservoir water level fluctuation. Engineering and Material Science, Volume 48, pp. 196-208.



DOI: https://doi.org/10.22146/jag.48592

Article Metrics

Abstract views : 2570 | views : 1805

Refbacks

  • There are currently no refbacks.


Copyright (c) 2020 Journal of Applied Geology

Journal of Applied Geology Indexed by:

 

Creative Commons License
This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.