Location
Chicago, Illinois
Date
02 May 2013, 7:00 pm - 8:30 pm
Abstract
The Dikchu hydropower project is 3 x 32 MW hydro power plant across river Dikchu in Sikkim, India. Dikchu is a tributary of River Teesta, a major river flowing right across Sikkim. The proposed hydro power project site is about 10 km upstream of the confluence of River Dikchu with River Teesta. Two more hydro power projects of NHPC, namely, Teesta Hydro Power Project Stage-IV and Teesta Hydro Power Project Stage-V on the River Teesta, are being commissioned upstream and downstream of the above mentioned confluence. Surface geological mapping indicated that quartzitic phyllite with bands of phyllites shear zones are encountered. The Dikchu HEP consists of Power House Cavern and Transformer cavern .The vertical insitu rock stress corresponds to the gravitational stress while the horizontal stress is much more times the vertical stresses. The rock mass is of fair to good quality as per RMR and Q methods of classification. The design of the underground powerhouse cavern, transformer cavern, has been carried out using two dimensional numerical analysis in phase2 software.
Department(s)
Civil, Architectural and Environmental Engineering
Meeting Name
7th Conference of the International Conference on Case Histories in Geotechnical Engineering
Publisher
Missouri University of Science and Technology
Document Version
Final Version
Rights
© 2013 Missouri University of Science and Technology, All rights reserved.
Creative Commons Licensing
This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License.
Document Type
Article - Conference proceedings
File Type
text
Language
English
Recommended Citation
Satyam, Neelima, "Support System Design of Power House and Transformer Caverns in Dikchu Hydropower Project, Sikkim" (2013). International Conference on Case Histories in Geotechnical Engineering. 6.
https://scholarsmine.mst.edu/icchge/7icchge/session05/6
Support System Design of Power House and Transformer Caverns in Dikchu Hydropower Project, Sikkim
Chicago, Illinois
The Dikchu hydropower project is 3 x 32 MW hydro power plant across river Dikchu in Sikkim, India. Dikchu is a tributary of River Teesta, a major river flowing right across Sikkim. The proposed hydro power project site is about 10 km upstream of the confluence of River Dikchu with River Teesta. Two more hydro power projects of NHPC, namely, Teesta Hydro Power Project Stage-IV and Teesta Hydro Power Project Stage-V on the River Teesta, are being commissioned upstream and downstream of the above mentioned confluence. Surface geological mapping indicated that quartzitic phyllite with bands of phyllites shear zones are encountered. The Dikchu HEP consists of Power House Cavern and Transformer cavern .The vertical insitu rock stress corresponds to the gravitational stress while the horizontal stress is much more times the vertical stresses. The rock mass is of fair to good quality as per RMR and Q methods of classification. The design of the underground powerhouse cavern, transformer cavern, has been carried out using two dimensional numerical analysis in phase2 software.
