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Japan 日本 . 黑部大壩 (黑部湖) DSC_1398

Kurobe Dam

The Kurobe Dam (黒部ダム?) or Kuroyon Dam (黒四ダム?), is a variable-radius arch dam on the Kurobe River in Toyama Prefecture on the island of Honshū, Japan. It supports the 335 MW Kurobe No. 4 Hydropower Plant and is owned by Kansai Electric Power Company. At 186 metres (610 ft) high, it is the tallest dam in Japan.[1] It was constructed between 1956 and 1963 at a cost of ¥51.3 billion yen. The project was a difficult engineering feat for the rapidly growing post–World War II Japan, and claimed the lives of 171 people.[2]

The Kurobe Dam is a 492 m (1,614 ft) long and 186 m (610 ft) high variable-radius (dome) arch dam. The dam is 39.7 m (130 ft) wide at its base, 8.1 m (27 ft) wide at its crest and contains 1,582,845 m3 (2,070,283 cu yd) of concrete. The dam is flanked and supported by two "wing" dams; the one on the left bank is 69 m (226 ft) long and the right is 56 m (184 ft). The dam withholds a reservoir with a capacity of 199,285,175 m3 (260,655,168 cu yd) of which 148,843,000 m3 (194,679,000 cu yd) is live (active or "useful") storage. The reservoir also has a catchment area of 188.5 km2 (72.8 sq mi) and surface area of 3.49 km2 (1.35 sq mi).[4] The dam's spillway is located on its crest and contains 10 11.5 m (38 ft) wide uncontrolled openings with a maximum discharge capacity of 906 m3/s (32,000 cu ft/s). Three other openings exist in the dam's orifice which consist of 1.5 m (4.9 ft) diameter pipes, two of which can discharge a maximum of 88 m3/s (3,100 cu ft/s) each and the third 44 m3/s (1,600 cu ft/s). The dam's crest elevation is 1,454 m (4,770 ft) above sea level while the reservoir's normal operating level is 1,448 m (4,751 ft) and low level is considered 1,338 m (4,390 ft).[5]

The dam's power station, Kurobe No. 4, is located underground and contains four generators which are powered by Pelton turbines for a total installed capacity of 335 MW and average annual generation of 1 billion kWh.[1][6] The power station is 22 m (72 ft) wide, 33 m (108 ft) high and 117 m (384 ft) long. The penstock serving water to the power station is 10,909.6 m (35,793 ft) long and utilizes a maximum effective hydraulic head of 545.5 m (1,790 ft) while transferring a maximum of 72 m3/s (2,500 cu ft/s) to the turbines. The plant's surge chamber is 145.6 m (478 ft) long and 5 m (16 ft) high.[5]






為日本代表水壩之一,堤高186米,是全日本最大的拱形水壩;水庫的建造共歷時七年,攔截御前澤所形成的人工湖黑部湖貯水量在2 億立方公尺以上,為日本最大的水庫,於1963年正式完工啟用,由關西電力公司以513億日元建設。1968年,石原裕次郎製作了以這個水庫為外景的電影《黑部之太陽》(黒部の太陽)。2002年12月31日播放NHK電視台的「紅白歌合戰」中,中島美雪在黑部水庫的洞穴中唱出《地上之星》,創下瞬間收視率52.8%的高收視率。

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Taken on April 29, 2012