KOYNA DAM,MAHARASHTRA

ER.NAIK SAMEER RAMCHANDRA

1. MAJOR DAMS IN INDIA WATER POWER ENGINEERING WATER POWER ENGINEERING PRESENTATION BY, NAIK SAMEER RAMCHANDRA [MT18WRE001]

2. KOYNA DAM (MAHARASHTRA) WATER POWER ENGINEERING

3. INTRODUCTION The Koyna Dam is one of the largest dams in Maharashtra, India. It is a rubble-concrete dam constructed on Koyna River which rises in Mahabaleshwar, a hillstation in Sahyadri ranges. It is located in Koyna Nagar, Satara district, nestled in the Western Ghats on the state highway between Chiplun and Karad. WATER POWER ENGINEERING

4. ABOUT DAM Construction   began - 1956 Opening   date - 1964 TYPE OF DAM- Rubble-concrete dam Height - 103.2  m (339  ft ) Length - 807.2 m (2,648 ft) Creates - SHIVAJISAGAR LAKE Total   capacity- 2,797,400,000   m 3 Surface   area- 891.78   km 2 Basin - Krishna , west flowing river. Total Projects cost - 4,953 Crore R upees WATER POWER ENGINEERING OFFICIAL NAME Koyna Dam D05104

5. PURPOSE The main purpose of the dam is hydroelectricity generation Some irrigation in neighboring areas. Flood control Navigation Domestic purpose WATER POWER ENGINEERING

6. POWER STATION Turbines Koyna dam foot powerhouse : 2 x 20  MW stage 1: 4 x 70  MW stage 2: 4 x 75  MW stage 3: 4 x 80  MW stage 4: 4 x 250  MW Total = 18 Pelton turbines Installed   capacity - 1,960   MW WATER POWER ENGINEERING

7. WATER POWER ENGINEERING

8. INDEX PLAN- KOYNA H.E.PROJECT WATER POWER ENGINEERING

9.   LAKE TAPPING Lake Tapping – A nonconventional intake system was created by piercing the lake from the bottom by blasting the rock plug using dynamite. Explosive used for the lake tapping were specially bought from Denmark . WATER POWER ENGINEERING

10. LAKE TAPPING (KOYNA) The first lake tapping was done successfully in 1999 which produces 65TMC water second lake tapping was done on 26th April 2012 and water rose upto 15 ft high creating waves. The process of double tapping was the first of its kind in ASIA WATER POWER ENGINEERING

11.   LAKE TAPPING (KOYNA) WATER POWER ENGINEERING

12. EARTHQUAKE : KOYNANAGAR The Koyna earthquake of December 11, 1967, killed about 200 people and injured a few thousand. and it occured near the the site of koyna dam The epicentre was within 5 km of the Koyna Dam (17° 23′ N., 73° 45′ E.). The depth of focus of the earthquake has been estimated at about 30 km. The earthquake was felt over distances up to 700 km from the epicentre. Total damage: 4 lakhs USD WATER POWER ENGINEERING

13. ABOUT KOYNANAGAR EARTHQUAKE Construction began- 1956 Opening date-1964 Earthquake date: 11 December 1967 Max. intensity : IX (Severe) WATER POWER ENGINEERING ACCELERATION VS TIME

14. Koyna Earthquake in near by Area in1967 after Dam was Built WATER POWER ENGINEERING

15. REFERENCE G.V.Berg, Y.C.Das,K.V.G.K.Gokhale and A.V.Setlur, “THE KOYNA,INDIA,EARTHQUAKES.”, poc.4 th wld conf. Earthquake Eng.,Santiago,chile,1969 www.mahagenco.in (Maharashtra state power generation C o.Ltd) { Nagivation – generation - Hydropower station- c) koyna hydro} sudhir k. jain “ Indian earthquake-The koyna”-(max intensity) National Geophysical Research Institude(NGRI) WATER POWER ENGINEERING

16. THANK YOU WATER POWER ENGINEERING