| 词条 | Polgolla Barrage |
| 释义 |
| name = Polgolla Barrage | name_official = | image = Polgolla Dam.jpg | image_size = | image_caption = Polgolla Dam with all spillways open | image_alt = | location_map = Sri Lanka | location_map_size = | location_map_caption = | location_map_alt = | coordinates = {{coord|07|19|18|N|80|38|42|E|type:landmark|display=inline}} | country = Sri Lanka | location = Polgolla, Central Province | purpose = P | status = O | construction_began = | opening = {{Start date|1976|07}} | demolished = | cost = | owner = Mahaweli Authority | dam_type = B | dam_crosses = Mahaweli River | dam_length = {{Convert|144|m|ft|0|abbr=on}} | dam_height_foundation= {{Convert|14.6|m|ft|0|abbr=on}} | dam_height_thalweg = | dam_elevation_crest = | dam_width_crest = | dam_width_base = | dam_volume = | spillway_count = | spillway_type = | spillway_capacity = | res_name = Polgolla Reservoir | res_capacity_total = {{Convert|4100000|m3|ft3|abbr=on}} | res_capacity_active = {{Convert|2100000|m3|ft3|abbr=on}} | res_capacity_inactive= | res_catchment = | res_surface = | res_max_length = {{Convert|1200|m|ft|abbr=on}} | res_max_width = {{Convert|170|m|ft|abbr=on}} | res_max_depth = | res_elevation = | res_tidal_range = | plant_name = Ukuwela Power Station | plant_coordinates = {{coord|07|23|56|N|80|39|08|E|type:landmark}} | plant_operator = Ceylon Electricity Board | plant_commission = | plant_decommission = | plant_type = | plant_turbines = {{Nowrap|2 × 20 MW}} | plant_capacity = {{Nowrap|40 MW}} | plant_annual_gen = | website = http://www.mahawelicomplex.lk/Poldam.html | extra = }} The Polgolla Barrage (also erroneously known as the Polgolla Dam), is a barrage built across the Mahaweli River at Polgolla, in the Central Province of Sri Lanka. The barrage is used to increase the volume of water, for transfer to the hydroelectric power station located {{Convert|8|km|mi|0|abbr=on}} north, via penstock.[1][2] Polgolla Reservoir Waterdrome operates a short distance upstream on the lake created by the barrage. Power stationWater from the Polgolla Reservoir is transferred to the Ukuwela Power Station at {{Coord|07|23|56|N|80|39|08|E|name=Ukuwela Power Station}}, near Ukuwela, via a {{Convert|8|km|mi|0|abbr=on}} long underground penstock. Water from the reservoir is transferred to the power station at a rate of {{Convert|2000|ft3/s|m3/s|abbr=on}}.[2] The power station at Ukuwela consists of two {{Nowrap|20 MW}} hydroelectric generators, totalling the plant capacity to {{Nowrap|40 MW}}. Both units were commissioned in July 1976. Water from the power station is discharged into the Amban River, a major tributary to the Mahaweli River, which then connects back to the Mahaweli River at a distance of approximately {{Convert|140|km|mi|abbr=on}} downstream of the Polgolla Barrage.[3][1] {{Clear left}}See also{{stack|{{Portal|Sri Lanka|Water|Renewable energy}}}}
References1. ^1 {{cite web|title=Polgolla Barrage and Reservoir|url=http://www.mahawelicomplex.lk/Poldam.html|publisher=Mahaweli Authority|accessdate=19 January 2014}} {{Electricity in Sri Lanka}}{{Inland waters of Sri Lanka}}2. ^1 {{cite web|title=CEB Hydropower Generation|url=http://www.ceb.lk/sub/knowledge/hydropower.html|publisher=Ceylon Electricity Board|accessdate=19 January 2014|deadurl=yes|archiveurl=https://web.archive.org/web/20140118144345/http://www.ceb.lk/sub/knowledge/hydropower.html|archivedate=18 January 2014|df=}} 3. ^{{cite web|title=CEB Generation Details: Laxapana Complex|url=http://www.ceb.lk/sub/other/networkg.html|publisher=Ceylon Electricity Board|accessdate=18 January 2014|deadurl=yes|archiveurl=https://web.archive.org/web/20140116192952/http://www.ceb.lk/sub/other/networkg.html|archivedate=16 January 2014|df=}} 5 : Buildings and structures in Kandy District|Dams in Sri Lanka|Hydroelectric power stations in Sri Lanka|Dams completed in 1976|Barrages (dam) |
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