General Information
Project Type
| Structure: |
Gravity dam |
|---|---|
| Material: |
Concrete dam |
| Function / usage: |
Hydroelectric dam / plant |
Location
| Location: |
Maharashtra, India |
|---|---|
| Coordinates: | 17° 24' 8.15" N 73° 45' 5.86" E |
Technical Information
Dimensions
| height | 103 m |
Materials
| dam structure |
reinforced concrete
|
|---|
Excerpt from Wikipedia
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, in the Western Ghats on the state highway between Chiplun and Karad.
Details
The main purpose of the dam is hydroelectricity with some irrigation in neighboring areas. Today the Koyna Hydroelectric Project is the largest completed hydroelectric power plant in India having a total installed capacity of 1,960 MW. Due to its electricity generating potential Koyna river is considered as the 'life line of Maharashtra'.
The spillway of the dam is located at the center. It has 6 radial gates. The dam plays a vital role of flood controlling in monsoon season. The catchment area dams the Koyna river and forms the Shivasagar Lake which is approximately 50 km (31 mi) in length. It is one of the largest civil engineering projects commissioned after Indian independence. The Koyna hydro-electric project is run by the Maharashtra State Electricity Board.
The dam has withstood many earthquakes in the recent past, including the devastating 1967 Koynanagar earthquake, resulting in the dam developing some cracks. After the disaster grouting of the cracks was done. Also internal holes were drilled to relieve the hydrostatic pressures in the body of the dam. Indian scientific establishment has formulated an ambitious project to drill a deep borehole in the region and intensely study the earthquake activity. This would help in better understanding and possible forecast of earthquakes. The proposal is to drill up to 7 km and study the physical, geological and chemical processes and properties of the reservoir triggered earthquake zone in real time. It would be an international project to be led by Indian scientists.
In 1973 the non-overflow portion of the dam was strengthened, followed by strengthening the spillway section in 2006. Now the dam is expected to be safe against any future earthquake, including ones with a higher intensity than that of 1967.
Text imported from Wikipedia article "Koyna Dam" and modified on June 16, 2022 according to the CC-BY-SA 4.0 International license.
Participants
Currently there is no information available about persons or companies having participated in this project.
Relevant Web Sites
Relevant Publications
- (1972): Behavior of Koyna Dam—Dec. 11, 1967 Earthquake. In: Journal of the Structural Division (ASCE), v. 98, n. 7 (July 1972), pp. 1395-1412.
- (1996): Blasting problems in underground constructions through deccan trap formation: Some experiences at Koyna Hydro-electric project, stage IV. In: Tunnelling and Underground Space Technology, v. 11, n. 3 (July 1996), pp. 311-324.
- (2013): Chaotic Analysis of Reservoir Inflow Series: A Case Study on Koyna Reservoir Inflow. In: Journal of The Institution of Engineers (India): Series A, v. 94, n. 2 (May 2013), pp. 89-97.
- (1972): The earthquake experience at koyna dam and stresses in concrete gravity dams. In: Earthquake Engineering and Structural Dynamics, v. 1, n. 2 ( 1972), pp. 151-164.
- (1973): The Koyna earthquake and the damage to Koyna Dam. In: Bulletin of the Seismological Society of America, v. 63, n. 2 (1 April 1973), pp. 381-397.
- About this
data sheet - Structure-ID
20049260 - Published on:
02/12/2009 - Last updated on:
13/09/2022
