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Pakistan Tarbela 5th Hydropower Station

Tabella Phase 5 Hydropower Station

Pakistan Tarbela 5th Hydropower Station
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  • Pakistan Tarbela 5th Hydropower Station

 

1.Project Honors:

The largest hydropower station built in Pakistan, Pakistan's "Three Gorges Project"

 

2.Project Overview:

Tarbela Dam is located on the main stream of the Indus River, approximately113kilometers from Islamabad, the capital of Pakistan. It is the largest hydropower station in Pakistan and is known as Pakistan's "Three Gorges Project". It has irrigation, power generation, and flood control benefits. The Tarbela Hydropower Station Phase V expansion project will increase the total installed capacity of the Tarbela Hydropower Station1410megawatts.

 

The Tarbela Phase V expansion project mainly consists of the intake, pressure steel pipes, powerhouse, tailrace culvert, tailrace channel, and switch station. It involves the modification and expansion of the existing No.5irrigation tunnel on the left bank into a water diversion and power generation tunnel, adding3units of470megawatt mixed-flow water turbine units, increasing the installed capacity by1410megawatts. The total installed capacity after the expansion will increase to6298megawatts, accounting for25%of Pakistan's national power generation capacity. This will not only protect the Tarbela Dam from siltation and extend the dam's "lifeline", but also aligns with the Pakistani government's development concept of building a "clean and green Pakistan".

 

3.Technical Challenges:

This area is one of the most geologically complex regions in the world. Landslides and floods frequently occur in this area, posing significant risks to the safety of the project and reservoir water storage. Because the Indus River water source is mainly glacial meltwater, in such complex geological conditions, it easily leads to the formation of barrier lakes in this area. Affected by plate tectonics and geological faults, this area is a frequent earthquake zone with high seismic intensity and a high maximum credible earthquake level, making the dam vulnerable to earthquakes. Currently, this features the world's largest and most complex steel branch pipe group, with a steel structure volume of nearly7500tons, exceeding the amount of steel used in the Eiffel Tower.

 

4.Key Ancillary Projects:

main pipe,5branch pipes,3power generation branch pipes, and3flood discharge branch pipes, steel branch pipe group

 

5.Value and Significance:

The commencement of this expansion project will continuously supply irrigation water to the local area while creating3000jobs. After completion and commissioning, the installed capacity will account for25%of Pakistan's national power generation capacity, greatly alleviating Pakistan's imminent water shortage problem, meeting the daily water needs of the local people, and further improving Pakistan's clean energy share.