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Xinfengjiang Dam
The Xinfengjiang Dam (''also known as the'' Xinfeng Dam) is a gravity dam on the Xinfeng River, upstream of its confluence with the Dong River, and just west of Heyuan City in Guangdong Province, China. The dam's power station has a 292.5 MW installed capacity and its reservoir supplies water for farming along with drinking water to Guangzhou, Shenzhen and Hong Kong. Construction on the dam began in 1958, the first generator was operational in 1960 and the dam complete in 1962. The dam's reservoir-filling is attributed to several earthquakes within the project area including a 6.1-magnitude (Mw) on March 19, 1962.
==Background==
Construction on the dam began in 1958, a total of of earth was excavated at the construction site. On October 20, 1959 the reservoir behind the dam began to fill and in November there were several small earthquakes within the reservoir zone. When the water level reached above sea level (ASL) in May 1960, there were three to four earthquakes at a 3.1-Mw and on July 18, when the water level ASL, a 4.3-Mw earthquake occurred. On March 19, 1962 when the reservoir reached ASL there was a 6.1-Mw earthquake with an epicenter downstream from the dam which destroyed several houses in the area. After the earthquake and as a precaution, cavities within the foundation were reinforced with concrete. This and other upgrades brought the dam to a 9.5-Mw-rated resistant design.〔
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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