Prof. B.S. Thandaveswara. The Beas Sutlej link project links two rivers viz: Beas and Sutlej through a system of

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1 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, km long, So 1 in 22.2 first 457 m, 1 in 670 rmaining part. Sundrnagar Hydl Channl Sundrnagar Sutlj Tunnl km long, 8.33 m dia, lind / R.C. for som rach links forbay and surg shaft. Surg shaft 22.6 m dia, m high, Diffrntial typ 3 pnstocks 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 m with a discharg of m 3 s -1. Stilling basin 99 m long and m wid. Indian Institut of Tchnology Madras

2 Prof. B.S. Thandavswara Muchkund Projct, Tunnl linking th watr conductor systm (channl) to th forbay Indian Institut of Tchnology Madras

3 Prof. B.S. Thandavswara Som Tunnl profils 55.5 o m 0.64 m 1.96 m 2.54 m 3.55 m 2.80 m m 59 o m m 1.70 m 1.47 m m Hors sho tunnl Hors sho tunnls ar vry convnint to construct Low prssur Tunnls < 10 m, Mdium had Tunnls ( m) and High had Tunnls (> 100 m) Nam Ara (Sq.m) Discharg, Q Vlocity (m/s) (m 3 /s) Sabarigiri Sharavathy to 4.5 Yamuna Hydl II stag Pandoh - Baggi Bas projct Vlocity in prssur shafts 6 to 8 m/s. Valu of Manning n for Tunnls Vry rough 0.04 to 0.06 Surfac trimmd to Surfac trimmd and invrts d to Indian Institut of Tchnology Madras

4 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) * (a) Part I (b) Part II 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 Typ of Lining R.C.C R.C.C has bn provid d whr th covr is lss R.C.C * R.C.C. nar Indian Institut of Tchnology Madras

5 Prof. B.S. Thandavswara 8 Projct Manri Bhali Hydro Elctric Projct 9 Kadampari Hydro Elctric Projct 10 Chukha Hydro Elctric Projct Sharavathi (Karnataka) Kundah (Tamil Nadu) Koyna (Maharashtra) portal / R.C.C HYDRAULIC DATA FOR HEAD RACE TUNNELS-FOREIGN PROJECTS Sl. No 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, Concrt * 3.7 hors sho3.43 circular km 4, * , , stl for 100m Asbstos Plat Indian Institut of Tchnology Madras

6 Prof. B.S. Thandavswara Brsimis I, Canada 1955 Kurob, Japan , Manning roughnss n = pr. Muchkund Hydro Elctric Schm / watr conductor systm Location: Jalapat across Muchkund Rivr. Gross Had: m nar Dudh Falls. Flum opn = 1250 m. Tunnl = m. Prssur tunnls m. Piplins 2 numbrs 3.05 m diamtr. Stl pip of 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

7 Prof. B.S. Thandavswara Circular Hors sho Ara y d Hydraulic Man Radius 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