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Bharatiya Vaigyanik evam Audyogik Anusandhan Patrika (BVAAP) >
BVAAP Vol.20 [2012] >
BVAAP Vol.20(1) [June 2012] >
| Title: | Identification of source of leakage in drainage gallery of Tehri dam using isotopic techniques |
| Authors: | Rai, S P
Kumar, Bhishm
Kumar, Sudhir
Garg, Pankaj
Rawat, Y S |
| Issue Date: | Jun-2012 |
| Publisher: | NISCAIR-CSIR, India |
| Abstract: | The Tehri dam with a height of 855 ft (260.5m) is the
world's fifth and Asia's highest earth-fill
dam, constructed on River Bhagirathi which is the main tributaries of River
Ganga. A network of drainage galleries has been constructed in the abutment to
minimize the pressure generated by the water flow. A rapid seepage of water was
observed at seven locations in the drainage galleries of AGR-3 and AIGR. The
stable isotopic techniques were used to identify the source of seepage at these
locations. To achieve the objective water sample from various sources like
reservoir, groundwater, springs and rainfall were collected and analyzed for
oxygen ( 18O) and deuterium ( 18H) stable isotope. The study shows that the
reservoir is the main contributor for the increased seepage in the drainage
galleries ( AGR-3 & AIGR) except one location. Analysis of reservoir level
and leakage discharge of two drainage galleries (i.e. AGR-3 & AIGR)
corroborate findings of isotopic techniques. |
| Page(s): | 131-134 |
| CC License: |  CC Attribution-Noncommercial-No Derivative Works 2.5 India |
| ISSN: | 0975-2412 (Online); 0771-7706 (Print) |
| Source: | BVAAP Vol.20(1) [June 2012]
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