| 词条 | Amagase Dam |
| 释义 |
| name = Amagase Dam | name_official = | image = Amagase Dam.jpg | image_size = | image_caption = | image_alt = | location_map = Japan | location_map_size = | location_map_caption = | coordinates = {{coord|34|52|51|N|135|49|41|E|type:landmark|display=inline,title}} | country = Japan | location = Uji, Kyoto | status = In use | construction_began = 1955 | opening = 1964 | demolished = | cost = | owner = | dam_type = Arch, variable-radius | dam_height = {{Convert|73|m|ft|0|abbr=on}} | dam_length = {{Convert|254|m|ft|0|abbr=on}} | dam_width_crest = | dam_width_base = | dam_volume = {{Convert|162000|m3|ft3|0|abbr=on}} | dam_crosses = Uji River | spillway_count = 4 | spillway_type = Crest, controlled overflow | spillway_capacity = {{Convert|680|m3/s|ft3/s|0|abbr=on}} | res_name = Lake Hōō | res_capacity_total = {{Convert|26280000|m3|acre.ft|0|abbr=on}} | res_catchment = {{Convert|4200|km2|sqmi|0|abbr=on}} | res_surface = {{Convert|1.9|km2|sqmi|0|abbr=on}} | res_max_depth = | res_tidal_range = | plant_operator = Kansai Electric Power Company | plant_commission = | plant_decommission = | plant_type = | plant_turbines = | plant_capacity = 92 MW (Amagase) 466 MW Kisenyama PS | plant_annual_gen = | website = | extra = }} The {{Nihongo|Amagase Dam|天ヶ瀬ダム}} is an arch dam on the Uji River just upstream from Uji City in Kyoto Prefecture, Japan. The main purpose of the dam is flood control but it supports a hydroelectric power station and creates the lower reservoir for the Kisenyama Pumped Storage Plant. The dam itself serves a 92 MW power station while the pumped-storage power station upstream has a 466 MW capacity. Construction on the dam began in 1955 and it was complete in 1964. The pumped-storage power station became operational in 1970. Both plants are owned by Kansai Electric Power Company. DesignThe dam is a {{Convert|73|m|ft|0|abbr=on}} tall, {{Convert|254|m|ft|0|abbr=on}} long variable-radius arch type with structural volume of {{Convert|162000|m3|ft3|0|abbr=on}}. The dam withholds a reservoir called {{Nihongo|Lake Hōō|鳳凰湖|Hōō-ko|lit. "Lake Phoenix"}} of {{Convert|26280000|m3|acre.ft|0|abbr=on}} of which {{Convert|20000000|m3|acre.ft|0|abbr=on}} is active or "useful" storage. It has a surface area of {{Convert|1.9|km2|sqmi|0|abbr=on}}.[1] The dam's spillway consists of four {{Convert|4.36|m|ft|0|abbr=on}} x {{Convert|10|m|ft|0|abbr=on}} floodgates on its crest with a maximum discharge capacity of {{Convert|680|m3/s|ft3/s|0|abbr=on}}. In the middle of the dam body, there are three {{Convert|3.6|m|ft|0|abbr=on}} x {{Convert|4.7|m|ft|0|abbr=on}} gate-controlled orifice openings with a maximum discharge of {{Convert|1110|m3/s|ft3/s|0|abbr=on}}. The dam's power station has a 92 MW installed capacity and a discharge capacity of {{Convert|186|m3/s|ft3/s|0|abbr=on}}.[2] Kisenyama Pumped Storage PlantUsing Lake Hōō as the lower reservoir, water is pumped up to the upper reservoir via two pump-generators. The upper reservoir is created by a rock-fill dam {{Coord|34|53|42|N|135|51|13|E|name=Kisenyama Dam}} that is {{Convert|91|m|ft|0|abbr=on}} high, {{Convert|255|m|ft|0|abbr=on}} long and has a crest width of {{Convert|11|m|ft|0|abbr=on}}. The dam also has structural volume of {{Convert|2338000|m3|ft3|0|abbr=on}} and withholds a reservoir of {{Convert|7227000|m3|acre.ft|0|abbr=on}} of which {{Convert|5408000|m3|acre.ft|0|abbr=on}} is active storage. From the upper reservoir, water can be released back down to the power station {{Coord|34|53|30|N|135|51|34|E|name=Kisenyama Pumped Storage Plant}} where the two 233 MW reversible Francis turbine pump-generators use it for power production.[1] This process can be repeated and generation usually occurs during peak usage periods. The high water level at the upper reservoir is {{Convert|296|m|ft|0|abbr=on}} above sea level while it is {{Convert|78.5|m|ft|0|abbr=on}} ASL in the lower reservoir. This affords the power station an effective hydraulic head of {{Convert|219.35|m|ft|0|abbr=on}}. Its discharge capacity is {{Convert|248|m3/s|ft3/s|0|abbr=on}}. The first generator of the pumped-storage power station was operational in January 1970 and the second in July of that year. It has a maximum output of 466 MW.[1] See also{{stack|{{Portal|Japan|Water|Renewable energy}}}}
References1. ^1 2 {{cite web|title=Power Plant Detail|url=http://www.jepoc.or.jp/cgi-bin/hydropp/viewdetail_sum.cgi|publisher=JEPOC|accessdate=17 January 2011|language=Japanese|archive-url=https://web.archive.org/web/20110722121406/http://www.jepoc.or.jp/cgi-bin/hydropp/viewdetail_sum.cgi|archive-date=2011-07-22|dead-url=yes|df=}} 2. ^{{cite web|title=Amagase Dam|url=http://dammania.net/kyoto/amagase.html|publisher=Dam Mania|accessdate=17 January 2011|language=Japanese| archiveurl= https://web.archive.org/web/20101214185620/http://dammania.net/kyoto/amagase.html| archivedate= 14 December 2010 | deadurl= no}} External links{{commons category-inline}}{{Dams in Kyoto prefecture}} 4 : Dams completed in 1964|Dams in Kyoto Prefecture|Arch dams|Pumped-storage hydroelectric power stations in Japan |
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