The Aviemore Dam is a dam on the Waitaki River in New Zealand. The dam is a composite dam, with an embankment section, and a concrete section. Built in the 1960s (and completed in 1968)[1] it impounds Lake Aviemore.
Aviemore Dam is owned and operated by Meridian Energy, and its primary purpose is to power a hydroelectric power plant.[2] It is a part of the Waitaki River Hydroelectric System, a scheme which supplies 30% of New Zealand's considerable amount of hydropower.[3]
The founding conditions of the dam differ on either side of the Waitangi Fault, hence different dam construction types are used. On the northern side of the valley (Canterbury side), the dam is founded on greywacke rock, and consists of a 335-metre (1,099 ft)-long concrete structure. On the southern side of the valley (Otago side), the dam is founded on tertiary sedimentary rock, an consists of a 457 metres (1,499 ft) long zoned embankment (earth) dam. During the construction of the concrete section, low-heat cement was first used in a large-scale application in New Zealand, to allow quick concrete pouring without the need for cooling elements.[4] The dams spill outlets and penstocks are incorporated into the concrete dam section.
Hydroelectric facilitiesEdit
The dam's hydroelectric generation facilities consist of 4 francis turbines each of 55 megawatts (74,000 hp), with a total capacity of 220 megawatts (300,000 hp) total), with the generators being 4 x 11 kV. The facility produces approximately 942 gigawatt-hours (3,390 TJ) of electricity per year. The net hydraulic head is 37 metres (121 ft), with the penstocks (water pipes leading to the turbines) being the largest diameter in New Zealand at the time of construction, at 7 metres (23 ft) diameter each.[4]
Seismic enhancementEdit
In the mid 2000's (decade), work was undertaken to enhance the dam and its appurtenant structures against the effects of earthquake loads, and to reduce the risk of overtopping resulting from earthquake-induced seiche waves in Lake Aviemore, in the event of rupture of the Waitangi Fault.
At the time of construction the Waitangi fault had been considered inactive, but investigations in the early 2000's found the fault to be active (but with low probability of movement). The analysis and safety evaluation of the dam, and design of enhancements was led by URS Consultants, who received an ACENZ Innovate NZ Silver Award for their safety evaluation & upgrade.[2]
^ abAviemore Dam Seismic Safety Evaluation & Upgrade - Innovate NZ, Brochure of the '2007 ACENZ Awards of Excellence', Page 13
^"Aviemore Dam". URS. from the original on 2006-03-13. Retrieved 2007-10-10.
^ ab(PDF). Meridian Energy. Archived from the original (PDF) on 2008-10-15. Retrieved 2007-10-10.
Further readingEdit
Martin, John E, ed. (1991). People, Power and Power Stations. Wellington: Bridget Williams Books Ltd and Electricity Corporation of New Zealand. pp. 316 pages. ISBN0-908912-16-1.
Sheridan, Marion (1995). Dam Dwellers – End of an Era. Twizel: Sheridan Press. pp. 392 pages. ISBN0-473-03402-6.
aviemore, waitaki, river, zealand, composite, with, embankment, section, concrete, section, built, 1960s, completed, 1968, impounds, lake, aviemore, seen, from, northern, sideofficial, namelocationcanterbury, otago, zealandconstruction, began1962opening, date1. The Aviemore Dam is a dam on the Waitaki River in New Zealand The dam is a composite dam with an embankment section and a concrete section Built in the 1960s and completed in 1968 1 it impounds Lake Aviemore Aviemore DamThe dam as seen from the northern sideOfficial nameAviemore DamLocationCanterbury Otago New ZealandConstruction began1962Opening date1968Operator s Meridian EnergyDam and spillwaysImpoundsWaitaki RiverReservoirCreatesLake AviemoreAviemore Dam is owned and operated by Meridian Energy and its primary purpose is to power a hydroelectric power plant 2 It is a part of the Waitaki River Hydroelectric System a scheme which supplies 30 of New Zealand s considerable amount of hydropower 3 Contents 1 Characteristics 1 1 Composite Dam structure 1 2 Hydroelectric facilities 1 3 Seismic enhancement 2 References 3 Further reading 4 External linksCharacteristics EditComposite Dam structure Edit The founding conditions of the dam differ on either side of the Waitangi Fault hence different dam construction types are used On the northern side of the valley Canterbury side the dam is founded on greywacke rock and consists of a 335 metre 1 099 ft long concrete structure On the southern side of the valley Otago side the dam is founded on tertiary sedimentary rock an consists of a 457 metres 1 499 ft long zoned embankment earth dam During the construction of the concrete section low heat cement was first used in a large scale application in New Zealand to allow quick concrete pouring without the need for cooling elements 4 The dams spill outlets and penstocks are incorporated into the concrete dam section Hydroelectric facilities Edit The dam s hydroelectric generation facilities consist of 4 francis turbines each of 55 megawatts 74 000 hp with a total capacity of 220 megawatts 300 000 hp total with the generators being 4 x 11 kV The facility produces approximately 942 gigawatt hours 3 390 TJ of electricity per year The net hydraulic head is 37 metres 121 ft with the penstocks water pipes leading to the turbines being the largest diameter in New Zealand at the time of construction at 7 metres 23 ft diameter each 4 Seismic enhancement Edit In the mid 2000 s decade work was undertaken to enhance the dam and its appurtenant structures against the effects of earthquake loads and to reduce the risk of overtopping resulting from earthquake induced seiche waves in Lake Aviemore in the event of rupture of the Waitangi Fault At the time of construction the Waitangi fault had been considered inactive but investigations in the early 2000 s found the fault to be active but with low probability of movement The analysis and safety evaluation of the dam and design of enhancements was led by URS Consultants who received an ACENZ Innovate NZ Silver Award for their safety evaluation amp upgrade 2 References Edit Aviemore hydro dam Te Ara The Encyclopedia of New Zealand Archived from the original on 2007 08 09 Retrieved 2008 06 15 a b Aviemore Dam Seismic Safety Evaluation amp Upgrade Innovate NZ Brochure of the 2007 ACENZ Awards of Excellence Page 13 Aviemore Dam URS Archived from the original on 2006 03 13 Retrieved 2007 10 10 a b Introducing Aviemore PDF Meridian Energy Archived from the original PDF on 2008 10 15 Retrieved 2007 10 10 Further reading EditMartin John E ed 1991 People Power and Power Stations Wellington Bridget Williams Books Ltd and Electricity Corporation of New Zealand pp 316 pages ISBN 0 908912 16 1 Sheridan Marion 1995 Dam Dwellers End of an Era Twizel Sheridan Press pp 392 pages ISBN 0 473 03402 6 External links Edit nbsp New Zealand portal nbsp Water portal nbsp Renewable energy portal Meridian Energy power stations from Meridian Energy 44 39 21 S 170 21 18 E 44 655955 S 170 35512 E 44 655955 170 35512 Retrieved from https en wikipedia org w index php title Aviemore Dam amp oldid 1094591765, wikipedia, wiki, book, books, library,
