Analysis of Sediment Flushing Effect for Reservoir Sedimentation Management of the Patrind Dam in Pakistan

파키스탄 파트린드댐의 저수지 퇴사관리를 위한 배사효과 분석

  • Received : 2013.09.06
  • Accepted : 2013.11.12
  • Published : 2013.11.30

Abstract

Reservoir sedimentation is one of the major concerns for sustainable reservoir operation. Since sediment concentration of the rivers in the Himalayan Mountain is very high, a proper sediment management scheme is necessary. This paper presents long-term reservoir sedimentation and sediment flushing based on the gate operation. Focused on the reservoir to be constructed for the Patrind hydropower project in Pakistan, 4 different flushing scenarios were proposed in this study to prevent successive sedimentation. By extending flushing period and by increasing the flushing discharge for 2 times, the flushing rate increases up to 53.2% and 43.6% in proportion to flushing period and discharge, respectively. Based on the simulation presented in this paper, it is expected to establish efficient sediment management plan to increase hydro power generation and sediment flushing simultaneously.

Keywords

References

  1. Ahn, J. M., Lyu, S. W., and Lee, N. J. (2012). Determination of the Optimal Sediment Discharge Formula for Hyeongsan River Using GSTARS, Journal of Korean Society of Civil Engineers, 32(1B), pp. 1-7. [Korean Literature]
  2. Choi, S. U. and Choi, S. W. (2011). Thickness of Deposited Delta in Reservoir Sedimentation, Proceedings 37th Congress of Korean Society of Civil Engineers, Korean Society of Civil Engineers, pp. 347-350. [Korean Literature]
  3. Choi, S. U. and Choi, S. W. (2012). A Quasi-study Model for Sedimentation and Flushing of Reservoirs, .Journal of Korean Water Resources Association, 45(2), pp. 217-227 [Korean Literature] https://doi.org/10.3741/JKWRA.2012.45.2.217
  4. HR Wallingford. (2012). Sedimentation Studies at Patrind Hydropower, Project Report No. EX6704, Wallingford, UK.
  5. Hydrology Engineering Center. (2010a). HEC-RAS River Analysis System User's Manual, US Army Corps of Engineers, Davis, CA, USA.
  6. Hydrology Engineering Center. (2010b). HEC-RAS River Analysis System Hydraulic Reference Manual, US Army Corps of Engineers, Davis, CA, USA.
  7. Julien, P. Y. (1995). Erosion and Sedimentation, Cambridge University Press, NY, USA.
  8. Jang, C. L., Lim, G. S., and Hwang, M. H. (2011). Sediment Flushing in the Reservoir, Water for Future, Korean Water Resources Association, 44(11), pp. 45-49. [Korean Literature]
  9. Ji, U., Son, K. I., and Kim, M. M. (2009). Numerical Analysis for Bed Changes in the Upstream Channel due to the Installation of Sediment Release Opening in the Flood Control Dam, Journal of Korean Water Resources Association, 42(4), pp. 319-329. [Korean Literature] https://doi.org/10.3741/JKWRA.2009.42.4.319
  10. Kim, D. G. and Shin, K. G. (2013). Long-term Simulation of Reservoir Sedimentation Considering Particle Size Distributions Od Suspended Sediment and Bed Materials, Journal of Korean Water Resources Association, 46(1), pp. 87-97. [Korean Literature] https://doi.org/10.3741/JKWRA.2013.46.1.87
  11. Lee, S. H., Ampitiya, H. K., and Bogardi, J. J. (2000). A Case Study on the Derivation of Optimal Operation Policies for the Reservoirs of the Complex Mahaweli Water Resources Scheme in Sri Lanka, Journal of Korean Society on Water Environment, 16(2), pp. 169-177. [Korean Literature]
  12. STAR Hydropower. (2007). Feasibility Study for Patrind Hydropower Project.