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Beck Tunnel Boring Machine
The Beck tunnel boring machine (alternately Big Becky) was the largest tunnel boring machine in the world, when it was operated by Ontario Power Generation, from 2006 to 2011. Hydro used it to bore a deep replacement tunnel to supply water from the upper Niagara River to the Sir Adam Beck Hydroelectric Plant. The tunnel it bored was in diameter. The tunnel was delayed when Beck encountered a bed of loose material, unsuitable for boring, that required a detour. According to Ontario Power Generation the TBM itself weighed 2000 tons. However, when its task was complete, Western Mechanical, the firm that removed Beck, described it weighing 7000 tons. References {{Reflist, refs= {{cite news , url = http://www.niagarafrontier.com/tunneltechnical.html , title = Niagara Tunnel Project: Technical facts , publisher = Ontario Power Generation , date = 2012-11-21 , accessdate = 2016-01-31 {{cite news , url = http://www.westernmechanical.net/pr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tunnel Boring Machine
A tunnel boring machine (TBM), also known as a "mole", is a machine used to excavate tunnels with a circular cross section through a variety of soil and rock strata. They may also be used for microtunneling. They can be designed to bore through hard rock, wet or dry soil, or sand. Tunnel diameters can range from (micro-TBMs) to to date. Tunnels of less than a metre or so in diameter are typically done using trenchless construction methods or horizontal directional drilling rather than TBMs. TBMs can be designed to excavate non-circular tunnels, including u-shaped, horseshoe, square or rectangular tunnels. Tunnel boring machines are used as an alternative to drilling and blasting (D&B) methods in rock and conventional "hand mining" in soil. TBMs have the advantages of limiting the disturbance to the surrounding ground and producing a smooth tunnel wall. This significantly reduces the cost of lining the tunnel, and makes them suitable to use in urban areas. The major disadva ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ontario Power Generation
Ontario Power Generation Inc. (OPG) is a Crown corporation and "government business enterprise" that is responsible for approximately half of the electricity generation in the province of Ontario, Canada. It is wholly owned by the government of Ontario. Sources of electricity include nuclear, hydroelectric, wind, gas and biomass. Although Ontario has an open electricity market, the provincial government, as OPG's sole shareholder, regulates the price the company receives for its electricity to be less than the market average, in an attempt to stabilize prices. Since 1 April 2008, the company's rates have been regulated by the Ontario Energy Board. On 10 June 2019, it was announced that a new corporate campus would be built in Clarington, Ontario, that will also house Ontario Power Generation's headquarters. Establishment Ontario Power Generation was established in April 1999 as part of plans by the Progressive Conservative government of Premier Mike Harris to privatize the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Niagara River
The Niagara River () is a river that flows north from Lake Erie to Lake Ontario. It forms part of the border between the province of Ontario in Canada (on the west) and the state of New York in the United States (on the east). There are differing theories as to the origin of the river's name. According to Iroquoian scholar Bruce Trigger, ''Niagara'' is derived from the name given to a branch of the locally residing native Neutral Confederacy, who are described as being called the ''Niagagarega'' people on several late-17th-century French maps of the area. According to George R. Stewart, it comes from the name of an Iroquois town called ''Ongniaahra'', meaning "point of land cut in two". The river, which is occasionally described as a strait, is about long and includes Niagara Falls in its course. The falls have moved approximately upstream from the Niagara Escarpment in the last 12,000 years, resulting in a gorge below the falls. Today, the diversion of the river for elec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sir Adam Beck Hydroelectric Plant
Sir Adam Beck Hydroelectric Generating Stations are two hydroelectric generating stations in Niagara Falls, Ontario, Canada. Sir Adam Beck Generating Station I, Sir Adam Beck Generating Station II and the Sir Adam Beck Pump Generating Station are all owned by Ontario Power Generation. Following the development of several smaller generating stations around Niagara Falls in the late 19th and early 20th centuries, the Province of Ontario authorized the construction of the first major publicly owned generating station in the province. At the time it was built, it was the largest hydroelectric generating station in the world. The stations divert water from the Niagara and Welland rivers above Niagara Falls which is then released into the lower portion of the Niagara River, and together produce up to . Adam Beck I Adam Beck I contains 10 generators and first produced power in 1922. It was originally called the Queenston-Chippawa Hydroelectric Plant and was renamed after Adam Beck in 1 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Western Mechanical
Western may refer to: Places *Western, Nebraska, a village in the US *Western, New York, a town in the US *Western Creek, Tasmania, a locality in Australia *Western Junction, Tasmania, a locality in Australia *Western world, countries that identify with shared "Western" culture Arts and entertainment Films * ''Western'' (1997 film), a French road movie directed by Manuel Poirier * ''Western'' (2017 film), a German-Austrian film Genres *Western (genre), a category of fiction and visual art centered on the American Old West **Western fiction, the Western genre as featured in literature **Western music (North America), a type of American folk music Music * ''Westerns'' (EP), an EP by Pete Yorn *WSTRN, a British hip hop group from west London Business *The Western, a closed hotel/casino in Las Vegas, United States *Western Cartridge Company, a manufacturer of ammunition *Western Publishing, a defunct publishing company Educational institutions *Western Washington University i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Toronto Star
The ''Toronto Star'' is a Canadian English-language broadsheet daily newspaper. The newspaper is the country's largest daily newspaper by circulation. It is owned by Toronto Star Newspapers Limited, a subsidiary of Torstar Corporation and part of Torstar's Daily News Brands division. The newspaper's offices are located at One Yonge Street in the Harbourfront neighbourhood of Toronto. The newspaper was established in 1892 as the ''Evening Star'' and was later renamed the ''Toronto Daily Star'' in 1900, under Joseph E. Atkinson. Atkinson was a major influence in shaping the editorial stance of the paper, with the paper having reflected his values until his death in 1948. The paper was renamed the ''Toronto Star'' in 1971. The newspaper introduced a Sunday edition in 1973. History The ''Star'' was created in 1892 by striking '' Toronto News'' printers and writers, led by future mayor of Toronto and social reformer Horatio Clarence Hocken, who became the newspaper's founde ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Canadian Geographic
''Canadian Geographic'' is a magazine published by the Royal Canadian Geographical Society, (RCGS) based in Ottawa, Ontario. History and profile After the Society was founded in 1929, the magazine was established the next year in May 1930 under the name ''Canadian Geographical Journal''. The Society's objective was to produce a popular magazine primarily focusing on Canadian geography. The first editor was Charles Camsell, since 1915 a fellow of the British Royal Geographical Society, as well as a geologist who had been responsible for mapping large parts of Northern Ontario, Manitoba and the Yukon. Originally published out of Montreal, Quebec, the magazine is now headquartered in Ottawa, Ontario. The magazine adopted its current title in 1978. Typically the magazine contains articles on physical, historical, political and environmental geography, illustrated with photographs, illustrations and maps. Controversial subjects such as acid rain, clear-cut logging, vanishing wet ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tunnel Boring Machines
A tunnel boring machine (TBM), also known as a "mole", is a machine used to excavate tunnels with a circular cross section through a variety of soil and rock strata. They may also be used for microtunneling. They can be designed to bore through hard rock, wet or dry soil, or sand. Tunnel diameters can range from (micro-TBMs) to to date. Tunnels of less than a metre or so in diameter are typically done using trenchless construction methods or horizontal directional drilling rather than TBMs. TBMs can be designed to excavate non-circular tunnels, including u-shaped, horseshoe, square or rectangular tunnels. Tunnel boring machines are used as an alternative to drilling and blasting (D&B) methods in rock and conventional "hand mining" in soil. TBMs have the advantages of limiting the disturbance to the surrounding ground and producing a smooth tunnel wall. This significantly reduces the cost of lining the tunnel, and makes them suitable to use in urban areas. The major disadva ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
