| 词条 | Imaichi Dam |
| 释义 |
| name = Imaichi Dam | name_official = | image = Imaichi Dam left view.jpg | image_size = | image_caption = | image_alt = | location_map = Japan | location_map_size = | location_map_caption = | coordinates = {{coord|36|49|31|N|139|39|58|E|type:landmark|display=inline,title}} | country = Japan | location = Nikkō, Tochigi Prefecture | status = O | construction_began = 1979 | opening = 1986 | demolished = | cost = | owner = TEPCO | dam_type = Gravity, concrete | dam_height = {{Convert|75.5|m|abbr=on}} | dam_height_thalweg = | dam_height_foundation= | dam_length = {{Convert|177|m|abbr=on}} | dam_width_crest = | dam_width_base = | dam_volume = {{Convert|192000|m3|cuyd|0|abbr=on}} | dam_elevation_crest = {{Convert|551|m|ft|0|abbr=on}} | dam_crosses = Togawa River | spillway_count = | spillway_type = | spillway_capacity = {{Convert|1620|m3/s|ft3/s|0|abbr=on}} | res_name = | res_capacity_total = {{Convert|9100000|m3|acre.ft|0|abbr=on}} | res_capacity_active = {{Convert|6200000|m3|acre.ft|0|abbr=on}} | res_capacity_inactive= | res_catchment = {{Convert|14.8|km2|mi2|0|abbr=on}} | res_surface = {{Convert|380|m2|acre|0|abbr=on}} | res_elevation = {{Convert|548.5|m|abbr=on}} | res_max_depth = | res_max_length = | res_max_width = | plant_hydraulic_head = {{Convert|524|m|abbr=on}} | res_tidal_range = | plant_operator = | plant_commission = 1988 | plant_decommission = | plant_type = | plant_turbines = 3 x {{convert|350|MW|abbr=on}} Francis pump turbines | plant_capacity = {{convert|1050|MW|abbr=on}} | plant_annual_gen = | website = | extra = }} The Imaichi Dam (今市ダム) is a concrete gravity dam on the Togawa River located {{Convert|4|km}} west of Nikkō in Tochigi Prefecture, Japan. The dam serves as the lower reservoir for the {{convert|1050|MW}} Imaichi Pumped Storage Power Station, while the Kuriyama Dam forms the upper. It is owned by TEPCO and was constructed between 1979 and 1986. The reservoir can store {{Convert|9100000|m3|acre.ft}} of water. Of that storage volume, {{Convert|6200000|m3|acre.ft}} can be used for power generation. Imaichi Pumped Storage Power StationThe power plant operates using the pumped storage hydroelectric method. During periods of high electricity demand, water is sent from the upper Kuriyama Reservoir to the power plant which contains 3 x {{convert|350|MW}} Francis pump turbines. Water discharged from the power plant then enters the Imaichi Reservoir. When demand is low, the pump-generators reverse mode and pump water from the lower reservoir back up to the upper. The process repeats as needed.[1][2] See also{{stack|{{Portal|Japan|Water|Renewable energy}}}}
References{{Commons category}}1. ^{{cite web|title=Tokyo Electric Power Station Imaichi|url=http://www.suiryoku.com/gallery/tochigi/imaichi/imaichi.html|publisher=Suiryoku.com|accessdate=19 January 2012|language=Japanese}} {{Dams in Tochigi Prefecture}}2. ^{{cite book|last=Engineers|first=prepared by Task Committee on Pumped Storage of the Committee on Hydropower of the Energy Division of the American Society of Civil|title=Hydroelectric pumped storage technology : international experience|year=1996|publisher=American Soc. of Civil Engineers|location=New York, NY|isbn=0-7844-0144-6|pages=2.2 1–5|url=https://books.google.com/books?id=iCSl-pxL7IwC&pg=PA43&dq=Imaichi+Dam&hl=en&sa=X&ei=ucMXT8PoEOTW2AW1z4zkCw&ved=0CDAQ6AEwAA#v=onepage&q=Imaichi%20Dam&f=false}} 3 : Dams completed in 1986|Dams in Tochigi Prefecture|Gravity dams |
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