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The Queen Sirikit Dam is an
Sirikit Dam
{{Webarchive, url=https://web.archive.org/web/20061107140305/http://www.sirikitdam.egat.com/index.php , date=2006-11-07 at Electricity Generating Authority of Thailand Dams in Thailand Hydroelectric power stations in Thailand Embankment dams Buildings and structures in Uttaradit province Dams completed in 1974 Energy infrastructure completed in 1974 1974 establishments in Thailand Phi Pan Nam Range
embankment dam
An embankment dam is a large artificial dam. It is typically created by the placement and compaction of a complex semi-plastic mound of various compositions of soil or rock. It has a semi-pervious waterproof natural covering for its surface ...
on the Nan River, a tributary of the Chao Phraya River
The Chao Phraya River is the major river in Thailand, with its low alluvial plain forming the centre of the country. It flows through Bangkok and then into the Gulf of Thailand.
Etymology
Written evidence of the river being referred to by the ...
, in Tha Pla District, Uttaradit Province, Thailand
Thailand, officially the Kingdom of Thailand and historically known as Siam (the official name until 1939), is a country in Southeast Asia on the Mainland Southeast Asia, Indochinese Peninsula. With a population of almost 66 million, it spa ...
. It is at the southeastern edge of the Phi Pan Nam Range
The Phi Pan Nam Range, also Pee Pan Nam, (, ) is a long system of mountain ranges in the eastern half of the Thai highlands. The range lies mostly in Thailand, although a small section in the northeast is within Sainyabuli Province, Sainyabul ...
. The dam was built for the purpose of irrigation, flood control and hydroelectric power production. It is named after Sirikit, Queen of Thailand.
Background
The Sirikit Dam among others in the Chao Phraya basin were constructed beginning in the 1950s to exploit the agricultural and hydroelectric potential of the basin. Preliminary construction on the dam began in 1968 and it was finished in 1972. The power plant and first three units were commissioned in 1974, the fourth in 1995. Previously in 1964, the Bhumibol Dam was completed on the Ping River, one of two major tributaries of the Chao Phraya including the Nan. The Bhumibol and Sirkit Dams control 22% of the Chao Phraya's annual runoff combined. Both dams also help provide for the irrigation of in the wet season and in the dry season.Design
The dam is a high and long embankment dam that is wide at its base and wide at its crest. The dam withholds a reservoir of of which is active or "useful" storage. The reservoir has a surface area of . The dam's spillway consists of a tunnel controlled by two radial gates, it has a capacity of . The dam's power station contains 4 x 125 MWFrancis turbine
The Francis turbine is a type of water turbine. It is an inward-flow reaction turbine that combines radial and axial flow concepts. Francis turbines are the most common water turbine in use today, and can achieve over 95% efficiency.
The pro ...
s for an installed capacity of 500 MW.
See also
* List of power stations in ThailandReferences
External links
Sirikit Dam
{{Webarchive, url=https://web.archive.org/web/20061107140305/http://www.sirikitdam.egat.com/index.php , date=2006-11-07 at Electricity Generating Authority of Thailand Dams in Thailand Hydroelectric power stations in Thailand Embankment dams Buildings and structures in Uttaradit province Dams completed in 1974 Energy infrastructure completed in 1974 1974 establishments in Thailand Phi Pan Nam Range