Английская Википедия:Aviemore Dam
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]
Characteristics
Composite Dam structure
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 Шаблон:Convert-long concrete structure. On the southern side of the valley (Otago side), the dam is founded on tertiary sedimentary rock, an consists of a Шаблон:Convert 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
The dam's hydroelectric generation facilities consist of 4 francis turbines each of Шаблон:Convert, with a total capacity of Шаблон:Convert total), with the generators being 4 x 11 kV. The facility produces approximately Шаблон:Convert of electricity per year. The net hydraulic head is Шаблон:Convert, with the penstocks (water pipes leading to the turbines) being the largest diameter in New Zealand at the time of construction, at Шаблон:Convert diameter each.[4]
Seismic enhancement
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]
References
Further reading
External links
Шаблон:Coord Шаблон:Meridian EnergyШаблон:Waitaki Шаблон:Waitaki River dams
- ↑ Шаблон:Cite encyclopedia
- ↑ 2,0 2,1 Aviemore Dam Seismic Safety Evaluation & Upgrade - Innovate NZ, Brochure of the '2007 ACENZ Awards of Excellence', Page 13
- ↑ Шаблон:Cite web
- ↑ 4,0 4,1 Шаблон:Cite web
- Английская Википедия
- Dams completed in 1968
- Energy infrastructure completed in 1968
- Dams in New Zealand
- Geography of Otago
- Buildings and structures in Otago
- Geography of Canterbury, New Zealand
- Buildings and structures in Canterbury, New Zealand
- Hydroelectric power stations in New Zealand
- 1960s architecture in New Zealand
- Страницы, где используется шаблон "Навигационная таблица/Телепорт"
- Страницы с телепортом
- Википедия
- Статья из Википедии
- Статья из Английской Википедии
