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Krishna Murthy, K. S.
- Geological and Geotechnical Investigations of Loharinag-Pala Hydroelectric Project, Garhwal Himalaya, Uttarakhand
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Authors
Affiliations
1 National Institute of Rock Mechanics, Kolar Gold Fields - 563 117, IN
2 Water and Power Consultancy Services (I) Ltd., Gurgaon, IN
3 928, 22nd Main Road, IV T Block, Jayanagar, Bangalore - 560 041, IN
1 National Institute of Rock Mechanics, Kolar Gold Fields - 563 117, IN
2 Water and Power Consultancy Services (I) Ltd., Gurgaon, IN
3 928, 22nd Main Road, IV T Block, Jayanagar, Bangalore - 560 041, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 73, No 6 (2009), Pagination: 821-836Abstract
The project area, forming a part of Bhagirathi valley, exposed rocks classed as central Himalayan crystallines and are medium to high grade metamorphics. The rock types exposed are feldspathic gneisses, quartz-biotite schists, garnet-biotite schist, biotite gneisses, migmatites and amphibolites. To design the rock support for the underground structures of desilting chambers, HRT, surge shaft, pressure shafts, power house, TRT and for the foundations of barrage and intake of desilting chambers, rock mass classifications was attempted following the methods of Bieniawski Rock Mass Rating (RMR) Classification and Tunnelling Quality Index (Q) of Barton et al. RMR technique involves collection of data on rock strength, RQD (%), spacing of discontinuities, condition of discontinuities and groundwater condition, while the 'Q' involves collection of data on RQD (%), joint set numbers (Jn), joint roughness number (Jr), joint alternation number (Ja), joint water reduction factor (Jw) and stress reduction factors (SRF). The permeability test in the overburden was done by the constant head method, while in the bed rock portion conducted by packer test. The result indicates that the rock masses of the area fall under the good, fair and poor rock quality. Augen gneiss of power house area is coming under the category of moderately strong rock as proved by deformability characteristics and strength parameter. On the basis of above study recommendations have been made for the proper and safe construction of the project components.Keywords
Hydroelectric, Rock Mass Classification, Tunnel Quality Index, Garhwal Himalaya, Uttarakhand.
References
- AGGARWAL, K.K. (1983) Fourth geotechnical note on the Loharinag-Pala Hydel scheme, Bhagirathi River, District Uttarkashi, Uttar Pradesh. Unpubld. report of Irrigation Department, Govt. of Uttar Pradesh, pp.1-28.
- BARTON, N., LIEN, R. and LUNDE, J. (1974) Engineering classification of rock masses for the design of tunnel support.Rock Mechanics, v.6(4), pp.189-236.
- BARTON, N., LOSET, F., LIEN, R. and LUNDE, J. (1980) Application of the Q-system in design decisions concerning dimensions and appropriate support for underground installations. Intnatl.Conf. on Sub-surface Space, Rock Store, Stockholm. SubSurface Space, 2, pp.553-561.
- BIENIAWSKI, Z.T. (1979) The geomechanics classification in rock engineering application. Proc. 4th Internatl. Congress on Rock Mechnacics, ISRM, Montreux, Balkema, Rotterdam, v.2, pp.41-48.
- BIENIAWSKI, Z.T. (1984) Rock mechanics design in mining and tunneling. A.A. Balkema, Rotterdam, 272p.
- BIENIAWSKI, Z.T. (1989) Engineering rock mass classification. John Willey & Sons, New York, 251p.
- HOEK, E., WOOD, D. and SHAH, S. (1992) A modified Hoek - Brown Failure criterion for jointed rock masses. Proc. Internatl. Conf.Eurock, Chester, pp.209-214.
- HOEK, E. KAISER, P.K. and BAWDEN, W.F. (1995) Support of Underground excavations in hard rock. A.A. Balkema Publishers, Rotterdam, Netherland.
- IS 13365 (Part 1) (1998) Rock Mass Rating (RMR) for Predicting Engineering Properties. Bureau of Indian Standards, New Delhi, 11p.
- MALLIK, S.K. (1976) Second geotechnical note on the LoharinagPala Hydel scheme, Bhagirathi River, Uttarkashi District, Uttar Pradesh. Unpubld. report of Irrigation Department, Govt. of Uttar Pradesh, pp.1-15.
- METCALFE, R.P. (1993) Pressure, temperature and time constraints on metamorphism across the Main Central Thrust zone and High Himalayan Slab in the Garhwal Himalaya. In: P.J. Treloar and M.P. Searle (Eds.), Himalayan Tectonics. Geol. Soc.London, Spec. Publ., No.74, pp.485-509.
- NAITHANI, A.K., BHATT, A.K. and SUNDRIYAL, Y.P. (2007) Landslide hazard zonation mapping: A case study for the hydropower project in a Part of Garhwal Himalaya, Uttaranchal, India. Jour.Himalayan Geol., v.28(1), pp.63-73.
- PANT, G. (1973) Preliminary geotechnical report on the LoharinagPala Hydel scheme, Bhagirathi River, Uttarkashi District, Uttar Pradesh. Unpubld. report of Irrigation Department, Govt. of Uttar Pradesh, pp.1-41.
- PANT, G. and MALLIK, S.K. (1974) A geotechnical report on the Loharinag Pala Hydel scheme, Bhagirathi River, Uttarkashi District, Uttar Pradesh. Unpubld. report of Irrigation Department, Govt. of Uttar Pradesh, pp 1-28.
- PANT, G. and MALLIK, S.K. (1978) Third geotechnical note on the Loharinag-Pala Hydel scheme, Bhagirathi River, District Uttarkashi, Uttar Pradesh. Unpubld. report of Irrigation Department, Govt. of Uttar Pradesh, pp.1-14.
- PUROHIT, K.K., ISLAM, R. and THAKUR, V.C. (1990) Metamorphism of Psammo-Pelitic rock, Bhagirathi Valley, Garhwal Himalaya.Jour. Himalayan Geol., v.1(2), pp.167-174.
- ROY, A.B. and VALDIYA, K.S. (1988) Tectonometamorphic evoluation of the Great Himalayan thrust sheets in Garhwal region, Kumaun Himalaya. Jour. Geol. Soc. India, v.32, pp.106-124.
- SAHAI, A. and SRIVASTAVA, R.K. (1997) Structural and geochemical characteristics of amphibolites from the Bhagirathi and Yamuna valleys of Main Central Thrust Zone, Garhwal Himalaya. Jour. Himalayan Geol., v.18, pp.191-201.
- SERAFIM, J.L. and PEREIRA, J.P. (1983) Constructions of the geomechanics classification of Bieniawski. Proc. Int. Symp.on Engg. Geol. and Underground Construction. LNEC, Lisob, Portugal.
- SHOME, S.K. and NARULA, P.L. (1969) Reconnaissance geological report on the Loharinag-Pala and Pala Maneri Hydel Projects, District Uttarkashi, Uttar Pradesh. Unpubld. report of Irrigation Department, Govt. of Uttar Pradesh, pp.1-28.
- VALDIYA, K.S., PAUL, S.K., CHANDRA, T., BHAKUNI, S.S. and UPADHYAY, R.C. (1999) Tectonic and lithological characterization of Himadri (Great Himalaya) between Kali and Yamuna Rivers, Central Himalaya. Himalayan Geol., v.20(2), pp.1-17.