Prof. B.S. Thandavswara Tunnl Th Bas Sutlj link projct links two rivrs viz: Bas and Sutlj through a systm of tunnls and a high contour opn channl. This link is dsignd to carry a discharg of 255 m 3 s -1. Pandoh Baggi tunnl 250 mm lining, Q = 255 m3s -1, 7.62 m dia, 13.17 km long, So 1 in 22.2 first 457 m, 1 in 670 rmaining part. Sundrnagar Hydl Channl Sundrnagar Sutlj Tunnl 12.31 km long, 8.33 m dia, lind / R.C. for som rach links forbay and surg shaft. Surg shaft 22.6 m dia, 125.3 m high, Diffrntial typ 3 pnstocks 22.86 m dia, 7.62 m dia risr. Chut spillway in a 6.71 m dia Tunnl fittd to surg shaft. Powr gnratd 1000 MW. Dhar Powr plant Pandoh Dam Spillway with flip buckt. Bas dam is fittd with spillway of 213.4 m with a discharg of 12374 m 3 s -1. Stilling basin 99 m long and 213.4 m wid. Indian Institut of Tchnology Madras
Prof. B.S. Thandavswara Muchkund Projct, Tunnl linking th watr conductor systm (channl) to th forbay Indian Institut of Tchnology Madras
Prof. B.S. Thandavswara Som Tunnl profils 55.5 o 0.854 m 0.64 m 1.96 m 2.54 m 3.55 m 2.80 m 2.175 m 59 o 3.0 1.275 m 0.825 m 1.70 m 1.47 m 4.9804 m Hors sho tunnl Hors sho tunnls ar vry convnint to construct Low prssur Tunnls < 10 m, Mdium had Tunnls (10-100 m) and High had Tunnls (> 100 m) Nam Ara (Sq.m) Discharg, Q Vlocity (m/s) (m 3 /s) Sabarigiri 16.4 53.5 3.32 Sharavathy 35.36 147.2 4 to 4.5 Yamuna Hydl II stag 44.15 234 5.32 Pandoh - Baggi Bas projct 45.58 255.0 5.59 Vlocity in prssur shafts 6 to 8 m/s. Valu of Manning n for Tunnls Vry rough 0.04 to 0.06 Surfac trimmd 0.025 to 0.035 Surfac trimmd and invrts d 0.020 to 0.030 Indian Institut of Tchnology Madras
Prof. B.S. Thandavswara Hydraulic Data for Had Rac Tunnl - Indian Projcts Sl. No Nam of th Projct 1 Baira Siul. H.E. projct (H.P) (a) Baira Tunnl (b) Bhaldh Tunnl 2 Yamuna Hydl Schm Stag II 3 Lngth of Tunnl Diamtr of Tunnl Ara (Sq.m) Disch arg (m 3 /s) Vlocit y (m/s) 7700 5.0 20.7 88.0 4.25 7910 1.83 * 2.74 4.66 19.8 4.25 (a) Part I 6200 7.0 38.4 235 6.1 (b) Part II 5700 7.5 44.15 234 5.32 Giri H.E. Projct 4 Loktak Hydro Elctric Projct 5 Bas Sutlj Link (a) Pandoh - Baggi 6 Srisailam Hydro Elctric Projct 7 Uppr sindh Hydro Elctric 7200 1250 3.66 3.36 10.51 8.83 46.68 46.68 4.45 5.29 6510 3.81 12.05 42.3 3.51 13110 7.62 45.58 255 5.59 12350 8.53 57.15 403.5 7.06 Typ of Lining R.C.C R.C.C has bn provid d whr th covr is lss 736 15.0 176.8 980 5.54 R.C.C. 396 3.14 * 2.59 5.63 12 2.13 R.C.C. nar Indian Institut of Tchnology Madras
Prof. B.S. Thandavswara 8 Projct Manri Bhali Hydro Elctric Projct 9 Kadampari Hydro Elctric Projct 10 Chukha Hydro Elctric Projct 11 12 13 Sharavathi (Karnataka) Kundah (Tamil Nadu) Koyna (Maharashtra) 8532 4.75 17.71 70 3.95 1035 7.0 38.46 150 3.9 6406 4.9 18.85 95.2 5.05 2073 8.69 55.73 198.4 3.56 4553.4 2.52 4.96 19.81 4.0 3256 7.32 42.06 - - portal / R.C.C HYDRAULIC DATA FOR HEAD RACE TUNNELS-FOREIGN PROJECTS Sl. No. 1 2 3 4 5 6 7 Nam of Projct Ala, Italy 1953 Valtllina, Italy 1959 Eucumbn, Tumut Australia 1959 Tooma Tumut Australia 1961 Tumut 2 Australia 1962 La Bathi, Franc 1960 Innrtkirchn, Switzrland Lngth of th Tunnl Dia of Tunnl Ara in m 2 Discharg Q m 3 /s Vlocity m /s Typ of lining 9,236-67 200 2.99 Concrt 22600 4.94 20.24 62 3.31 22315 6.4 32.2 142 4.40 14330 3.8 * 3.7 hors sho3.43 circular 12.81 9.24 100 100 7.81 10.82 6.5 km 4,938 6.4 32.2 125 3.88 12528 4.2 * 4.4 14-15.2 50 3.33 9,968 3.4 9 54 6.0, stl for 100m Asbstos Plat Indian Institut of Tchnology Madras
Prof. B.S. Thandavswara 8 9 1942 Brsimis I, Canada 1955 Kurob, Japan 1961 12230 9.45 70 425 6.07 10,400 4.80 18.1 72 3.98 - Manning roughnss n = 0.013 pr. Muchkund Hydro Elctric Schm / watr conductor systm Location: Jalapat across Muchkund Rivr. Gross Had: 266.39 m nar Dudh Falls. Flum opn = 1250 m. Tunnl = 1219.2 m. Prssur tunnls 914.4 m. Piplins 2 numbrs 3.05 m diamtr. Stl pip of 34.75 m. Pnstocks 6 numbrs 1.6 m diamtr and 1.45 m diamtr. Vrtical Francis Turbin. d 0 Hors sho tunnl Indian Institut of Tchnology Madras
Prof. B.S. Thandavswara 1 0.8 Circular Hors sho Ara y d 0 0.6 0.4 Hydraulic Man Radius 0.2 0 0 0.2 0.4 0.6 0.8 1 1.2 1.4 Normalisd Ara ( A ) and Hydraulic Man Radius ( R 2 ) π d 0 0 d 4 4 for Hors Sho Conduits RCC with 1% Rinforcmnt Minimum Excavation Lin (Pay Lin) Innr Formd surfac of lining RCC with 1.5 to 2 % Rinforcmnt Typical Cross sction in soft strata Typical Cross sction of Tunnl in soft soils Indian Institut of Tchnology Madras