Longtan Dam
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Longtan Dam () is a large
roller-compacted concrete Roller-compacted concrete (RCC) or rolled concrete (rollcrete) is a special blend of concrete that has essentially the same ingredients as conventional concrete but in different ratios, and increasingly with partial substitution of fly ash for Po ...
(RCC)
gravity dam A gravity dam is a dam constructed from concrete or stone masonry and designed to hold back water by using only the weight of the material and its resistance against the foundation to oppose the horizontal pressure of water pushing against it ...
on the
Hongshui River The Hongshui River is a major river in the Guangxi Zhuang Autonomous Region in Southern China. It is one of the main rivers in the basin of the Xi River, which in its turn is one of the main tributaries of the Pearl River. Because it flows t ...
in Tian'e County of the Guangxi Zhuang Autonomous Region,
China China, officially the People's Republic of China (PRC), is a country in East Asia. It is the world's List of countries and dependencies by population, most populous country, with a Population of China, population exceeding 1.4 billion, slig ...
, a tributary of the Xi River and the Pearl River. The dam is high and long; it is the tallest of its type in the world. The dam is intended for
hydroelectric Hydroelectricity, or hydroelectric power, is electricity generated from hydropower (water power). Hydropower supplies one sixth of the world's electricity, almost 4500 TWh in 2020, which is more than all other renewable sources combined an ...
power production,
flood control Flood control methods are used to reduce or prevent the detrimental effects of flood waters."Flood Control", MSN Encarta, 2008 (see below: Further reading). Flood relief methods are used to reduce the effects of flood waters or high water level ...
and
navigation Navigation is a field of study that focuses on the process of monitoring and controlling the movement of a craft or vehicle from one place to another.Bowditch, 2003:799. The field of navigation includes four general categories: land navigation ...
. The dam contains seven surface spillways, two bottom outlets and an
underground power station An underground power station is a type of hydroelectric power station constructed by excavating the major components (e.g. machine hall, penstocks, and tailrace) from rock, rather than the more common surface-based construction methods. One or mor ...
. The Longtan ship lift, part of the dam complex, will be the tallest ship lift system in the world.


Construction

The dam was planned in the 1950s, but preliminary construction (roads, bridges, river diversion) did not begin until 1940s. Formal construction began on the project July 1, 2001, and the river was diverted by November 2003. A total of of material were excavated from the dam site. Impounding of the reservoir began in 2006, and the dam's first of three operational
hydroelectric Hydroelectricity, or hydroelectric power, is electricity generated from hydropower (water power). Hydropower supplies one sixth of the world's electricity, almost 4500 TWh in 2020, which is more than all other renewable sources combined an ...
generating units was testing May 2007. In 2009, the last generator became operational and the installed capacity increased to , its annual generation is estimated at .Hydroelectric Power Plants in Guangxi & Guizhou, China
A pair of tunnels diverted the river around the site of the dam, during construction.


Navigation

The dam will submerge over 300 shoals, which had rendered the upper Hongshui unnavigable. The Longtan ship lift will be able to lift vessels of up to 500 tonnes. Chinese officials assert the dam and ship lift will turn the Hongshui into a ''"golden waterway"'' for reaching landlocked
Guizhou Guizhou (; Postal romanization, formerly Kweichow) is a landlocked Provinces of China, province in the Southwest China, southwest region of the China, People's Republic of China. Its capital and largest city is Guiyang, in the center of the pr ...
and
Guangxi Guangxi (; ; alternately romanized as Kwanghsi; ; za, Gvangjsih, italics=yes), officially the Guangxi Zhuang Autonomous Region (GZAR), is an autonomous region of the People's Republic of China, located in South China and bordering Vietnam ...
provinces.


See also

*
List of power stations in China The following page lists some power stations in mainland China divided by energy source and location. Coal Nuclear Hydroelectric Solar Tide Wind By location The following pages list the major power stations ...
* List of dams and reservoirs in China


References

{{Reflist, refs= {{cite book , url = https://books.google.com/books?id=yzu5BQAAQBAJ&q=Longtan+%22ship+lift%22+OR+shiplift&pg=PA301 , title = Fuzzy-Like Multiple Objective Multistage Decision Making , volume = 533 , author1 = Jiuping Xu , author2 = Ziqiang Zeng , publisher =
Springer Publishing Springer Publishing Company is an American publishing company of academic journals and books, focusing on the fields of nursing, gerontology, psychology, social work, counseling, public health, and rehabilitation (neuropsychology). It was e ...
, page = 301 , year = 2014 , access-date = 2020-01-07 , isbn = 9783319033983
{{cite news , url = http://en.people.cn/200310/26/print20031026_126850.html , title = Hongshui River in S.China to be dammed in November , language = en , accessdate = 2016-09-20 {{cite news , url = http://www.bjreview.com.cn/special/United_Nations_Climate_Conference/2008-10/27/content_234162_2.htm , title = Harnessing the Hongshuihe , publisher = Beijing Review , author = Lan Xinzhen , date = 2008-10-30 , archive-url = https://web.archive.org/web/20160919145200/http://www.bjreview.com.cn/special/United_Nations_Climate_Conference/2008-10/27/content_234162_2.htm , archive-date = 2016-09-19 , url-status = live {{cite news , url = http://www.msdi.cn/en/vnews.php?m=36&m1=45&type=n&id=982 , title = Longtan HPP , publisher = Zhongnam Engineering Corporation , archive-url = https://web.archive.org/web/20160315040744/http://www.msdi.cn/en/vnews.php?m=36&m1=45&type=n&id=982 , archive-date = 2016-03-15 , accessdate = 2016-09-19 , url-status = dead , quote = A scheme of two-stage counterweight-type vertical ship lift with an open channel in the middle was adopted as the navigation structure for Longtan project. {{cite news , url = https://books.google.com/books?id=IspQAAAAYAAJ&q=shiplift+OR+%22ship+lift%22+china+longtam+OR+longtan , title = Progress at the Longton Dam and Hydropower Project , publisher =
International Journal on Hydropower & Dams International is an adjective (also used as a noun) meaning "between nations". International may also refer to: Music Albums * ''International'' (Kevin Michael album), 2011 * ''International'' (New Order album), 2002 * ''International'' (The T ...
, date = 2004 , pages = 84–85 , accessdate = 2016-09-19 , quote = Work is now beginning on the main dam at Longtan RCC dam in China, which currently sets world records in terms of RCC dam height, powerplant dimensions, and shiplift range.
{{cite news , url = http://www.usembassy-china.org.cn/sandt/ptr/Guangxi-Power-prt.htm , title = Guangxi's Longtan Dam: Satisfying Guangdong's Thirst for Power , publisher = U.S. Consulate in Guangzhou , date = August 2002 , archive-url = https://web.archive.org/web/20070927204021/http://www.usembassy-china.org.cn/sandt/ptr/Guangxi-Power-prt.htm , archive-date = 2007-09-27 , accessdate = 2016-09-19 , url-status = dead , quote = The Longtan Dam will be a key element in the so-called 'Western' effort, one of the four major infrastructure projects now underway in China's Tenth Five-Year Plan (2001-2005) {{cite news , url = http://www.usembassy-china.org.cn/sandt/ptr/Longtan-Dam-prt.htm , title = Big Dam Project Meets Small Town: Longtan Dam's Impact on Tian'e Township , publisher = U.S. Consulate in Guangzhou , date = August 2002 , archive-url = https://web.archive.org/web/20070927203729/http://www.usembassy-china.org.cn/sandt/ptr/Longtan-Dam-prt.htm , archive-date = 2007-09-27 , accessdate = 2016-09-19 , url-status = dead , quote = The Chinese government is gambling that expenditure of public funds on huge projects such as the Longtan Dam will lead to sustainable economic development. {{cite news , url = http://english.people.com.cn/200705/28/eng20070528_378429.html , title = First generator of China's 3rd largest hydropower project passes trial operation , publisher =
People's Daily The ''People's Daily'' () is the official newspaper of the Central Committee of the Chinese Communist Party (CCP). The newspaper provides direct information on the policies and viewpoints of the CCP. In addition to its main Chinese-language ...
, date = 2007-05-18 , accessdate = 2008-02-10 , archive-date = 2011-06-06 , archive-url = https://web.archive.org/web/20110606040915/http://english.people.com.cn/200705/28/eng20070528_378429.html , url-status = live , quote = "We are preparing for the operation of the other two generators, which is also slated for this year," said Dai Bo, general manager of the Longtan Hydropower Development Co. of China Datang Corporation (CDT).
{{cite news , url = http://www.chinadaily.com.cn/en/doc/2003-10/26/content_275623.htm , title = Hongshui River in south China to be dammed in November , publisher =
China Daily ''China Daily'' () is an English-language daily newspaper owned by the Central Propaganda Department of the Chinese Communist Party. Overview ''China Daily'' has the widest print circulation of any English-language newspaper in China. ...
, date = 2003-10-26 , accessdate = 2008-02-10 , archive-date = 2003-10-31 , archive-url = https://web.archive.org/web/20031031134457/http://www.chinadaily.com.cn/en/doc/2003-10/26/content_275623.htm , url-status = live , quote = The project's planned installed capacity will total 5.4 million kw and the project will be able to generate 15.67 billion kwh of electricity a year.
{{cite news , url = http://www.potain.com/upload/reference/000D55648D9B11F78D9B80F03BE7EEA8Looking_Up_COM_EN_filet.pdf , title = Building Longtan , publisher = Potain , author = Ben Shaw , date = 2003-11-06 , accessdate = 2008-02-10 , archive-date = 2012-02-10 , archive-url = https://web.archive.org/web/20120210153809/http://www.potain.com/upload/reference/000D55648D9B11F78D9B80F03BE7EEA8Looking_Up_COM_EN_filet.pdf , url-status = dead , quote = Li Xuejiang, a manager with one of the technical departments for the contracting joint venture, explains the working process at the site: “This jobsite operates 24 hours a day, seven days a week – in common with most working job sites in China.” {{cite news , url = http://www.china.org.cn/english/2003/Nov/79398.htm , title = Guangxi Builds Huge Hydraulic Power Station , publisher =
China through a lens China, officially the People's Republic of China (PRC), is a country in East Asia. It is the world's List of countries and dependencies by population, most populous country, with a Population of China, population exceeding 1.4 billion, slig ...
, date = 2003-11-06 , accessdate = 2008-02-10 , quote = The Longtan Power Station, the largest of the 10 hydraulic power works to be built on Hongshui River in the upper reach of Pearl River, will generate 18.7 billion kwh annually when construction works complete in December 2009. , archive-date = 2004-02-24 , archive-url = https://web.archive.org/web/20040224021247/http://www.china.org.cn/english/2003/Nov/79398.htm , url-status = live
Buildings and structures in Guangxi Hydroelectric power stations in Guangxi Dams in China Gravity dams Dams completed in 2009 Roller-compacted concrete dams Underground power stations 2009 establishments in China Energy infrastructure completed in 2009 http://www.fao.org/nr/water/aquastat/countries_regions/Profile_segments/CHN-WR_eng.stm