Analysis of Sediment Samples and Erosion Potential: A Case Study of Upper Tamakoshi Hydroelectric Project

  • Ravi Koirala Turbine Testing Lab
  • Sailesh Chitrakar Turbine Testing Lab
  • Surya Nath Regmi Student at EIILM University, Sikkim, India
  • Manisha Khadka Student at EIILM University, Sikkim, India
  • Hari Prasad Neopane Kathmandu University, Nepal
  • Bhola Thapa Kathmandu University, Nepal
Keywords: Sediment erosion, erosion tendency, Sieve, Particle Size Distribution, Mineral composition, Rotating, Disc Apparatus, Nepal

Abstract

Hydropower can be an effective green solution for meeting the current energy demand in Nepal. However, despite having tremendous water resources, only 2% of Nepal’s hydroelectricity potential has been tapped. Of the challenges that Nepali hydro faces, sediment erosion is a major one. Sediment erosion refers to an erosive tendency of sediment particles flowing with water over the exposed turbine parts including the runner. This paper deals with a sample analysis of sediment particles from the Upper Tamakoshi Hydroelectric Project. In this paper, we test for particle size distribution, particle count, mineral composition, and erosion potential analysis. For the mineral and erosion potential analysis, the sand samples range from 75 ìm to 200 ìm because the Tamakoshi plant consists of sediment traping system for particles larger than 150 ìm.

The sediment samples were collected from three different points in the headrace and the severity of the effect of erosion has been analyzed in terms of depending variables like particle size, concentration, and mineral composition.

DOI: http://dx.doi.org/10.3126/hn.v16i0.12216     

HYDRO Nepal 

Journal of Water Energy and Environment

Issue. 16, 2015, January

Page: 28-31

Upload date: March 1, 2015

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Author Biographies

Ravi Koirala, Turbine Testing Lab

Researcher

Sailesh Chitrakar, Turbine Testing Lab
Research Fellow
Surya Nath Regmi, Student at EIILM University, Sikkim, India
Mechanical Engineering
Manisha Khadka, Student at EIILM University, Sikkim, India
Mechanical Engineering
Hari Prasad Neopane, Kathmandu University, Nepal
Associate Professor
Bhola Thapa, Kathmandu University, Nepal
Professor
Published
2015-03-01
How to Cite
Koirala, R., Chitrakar, S., Regmi, S., Khadka, M., Neopane, H., & Thapa, B. (2015). Analysis of Sediment Samples and Erosion Potential: A Case Study of Upper Tamakoshi Hydroelectric Project. Hydro Nepal: Journal of Water, Energy and Environment, 16, 28-31. https://doi.org/10.3126/hn.v16i0.12216
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Articles