Tarbela dam

Introduction
Location
Construction
Features
Benefits
Lifespan
Refrences

Cause of Delay

1. Visvesvaraya National Institute of Technology  ( VNIT  Nagpur) Topic Of Presentation :- TARBELA DAM Submitted To : Presented By : Dr. Ashwini Mirajkar Gaurav Gautam ( Assistant Prof. ) ( MT21WRE012 )

2. Outline Of Presentation :- Description Location Construction Details Cause of Delay Features Benefits Lifespan References

3. Description :- Tarbela dam is the largest Earth Rock filled dam in the world. It is the fifth largest dam by structural volume . It is also the second largest dam in terms of reservoir capacity in the world . It is also the highest dam in Pakistan .

4. Location :- The dam is built on one of the worlds largest river : The Indus known as the “Abbasin” or “ The father of Rivers” . Located in the “Swabi” ( Khyber Pakhtunkhwa ) mainly and in some area of “Haripur District” of the province . Coordinates of Dam are 34.0875° N & 72.6990° E .

5. Construction :- Construction of Dam began in 1968 and has to be completed in the year 1976 . The dam was operational in 1976 but its completion occur in 1984 . The dam has to be completed in the duration of 8 years but it take 16 years to completed . Construction is undertaken by Italian firm “Salini Impregilo” .

6. Cause of delay :- Around 70 sinkholes in the reservoir bed appeared which they tried to covering between 1975 and 1978 by dumping thousands of tonnes of Earth . One sinkhole that appeared in 1984 was still there till 1991 .

7. Features :- The total height of dam is 143.26 m ( 470 ft. ) from the river level and length is 2743.2 m ( 9000 ft. ) . The Width of Tarbela dam at its base is 600m . The Reservoir Capacity is 13.69 cubic Km ( 3.28 cu mi ) . Its catchment area is 168000 km 2 ( 6500 sq. mi ) . Estimated cost of project was $ 800 million . Total cost of project was $1.697 billion .

8. Benefits :- The primary Objective of Dam was to supply water for irrigation by storing flows during the monsoon and subsequently releasing stored water during low flows in winters . The purpose was to compensate for the loss of Water supplies of eastern rivers ( Ravi,Sutlej,Beas ) . Tarbela has generated 341.139 billion kwh cheap hydro-electricity energy since commissioning . Project recover its total cost of construction in 10 years and now the project gives the benefit to the economy of Pakistan .

9. Lifespan :- Because the source of Indus River is glacial melt water from the Himalayas, the river carries huge amount of sediments with the annual suspended sediments load of 200 million tons. Live storage capacity of Tarbela reservoir had declined more than 33.5% to 6.434 million acre feet (MAF) against its original capacity 9.69 MAF because of sedimentation over 38 years . The useful life of the dam and reservoir was estimated to be approximately 50 Years . However , sedimentation has been much lower than predicted , and it is now estimated that the useful lifespan of the dam will be 85 years , to about 2060

10. References :- https://en.wikipedia.org/wiki/Tarbela_Dam (Wikipedia ) https://www.water-technology.net/projects/tarbela-dam-project/ (Google)

11. THANK- YOU