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Snowy Hydro 2.0
Snowy 2.0 Pumped Storage Power Station or Snowy Hydro 2.0 or simply Snowy 2.0 is a Pumped-storage hydroelectricity, pumped-hydro battery megaproject in New South Wales, Australia. The dispatchable generation project expands upon the original Snowy Mountains Scheme (ex post facto Snowy 1.0) connecting two existing dams through a underground tunnel and a new, underground pumped-hydro power station. Construction began in 2019. It is expected to supply 2.2 gigawatts of capacity and about 350,000 megawatt hours of large-scale storage to the national electricity market. It is the largest renewable energy project under construction in Australia. It includes one of the largest and deepest cavern excavations ever undertaken. It also includes the longest tunnels at 27 kilometres in length, of any pumped-hydro station ever built. It is designed for grid stabilization; to be a backup at times of peak demand and for when solar and wind energy are not providing power. It provides invaluable ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Snowy Mountains
The Snowy Mountains, known informally as "The Snowies", is an IBRA subregion in southern New South Wales, Australia, and is the tallest mountain range in mainland Australia, being part of the continent's Great Dividing Range cordillera system. It makes up the northeastern half of the Australian Alps (the other half being the Victorian Alps) and contains Australia's five tallest peaks, all of which are above , including the tallest Mount Kosciuszko, which reaches to a height of above sea level. The offshore Tasmanian highlands makes up the only other major alpine region present in the whole of Australia. The Snowy Mountains experiences large natural snowfalls every winter, normally during June, July, August and early September, with the snow cover melting by late spring. It is considered to be one of the centers of the Australian ski industry during the winter months, with all four snow resorts in New South Wales being located in the region. The range is host to the mou ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
COVID-19 Pandemic In Australia
The COVID-19 pandemic in Australia is part of the ongoing worldwide pandemic of the coronavirus disease 2019 () caused by severe acute respiratory syndrome coronavirus 2 (). The first confirmed case in Australia was identified on 25 January 2020, in Victoria, when a man who had returned from Wuhan, Hubei Province, China, tested positive for the virus. , Australia has reported over 9,588,977 cases, over 9,224,255 recoveries, and 12,200 deaths. Victoria's second wave having the highest fatality rate per case. In March 2020, the Australian government established the intergovernmental National Cabinet and declared a human biosecurity emergency in response to the outbreak. Australian borders were closed to all non-residents on 20 March, and returning residents were required to spend two weeks in supervised quarantine hotels from 27 March. Many individual states and territories also closed their borders to varying degrees, with some remaining closed until late 2020, and contin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kosciuszko National Park
The Kosciuszko National Park () is a national park and contains mainland Australia's highest peak, Mount Kosciuszko, for which it is named, and Cabramurra, the highest town in Australia. Its borders contain a mix of rugged mountains and wilderness, characterised by an alpine climate, which makes it popular with recreational skiers and bushwalkers. The park is located in the southeastern corner of New South Wales, southwest of Sydney, and is contiguous with the Alpine National Park in Victoria to the south, and the Namadgi National Park in the Australian Capital Territory to the northeast. The larger towns of Cooma, Tumut and Jindabyne lie just outside and service the park. The waters of the Snowy River, the Murray River, the Murrumbidgee River, and the Gungarlin River all rise in this park. Other notable peaks in the park include Gungartan, Mount Jagungal, Bimberi Peak and Mount Townsend. On 7 November 2008, the Park was added to the Australian National Heritage List as on ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tantangara Dam, On Murrumbidgee River, NSW
Tantangara is a locality in the Snowy Monaro Regional Council region of New South Wales, Australia. At the , Tantangara had a population of zero. It is the location of the Tantangara Dam on the Murrumbidgee River, part of the Snowy Mountains Scheme. Today, the entire locality is contained in the Kosciuszko National Park The Kosciuszko National Park () is a national park and contains mainland Australia's highest peak, Mount Kosciuszko, for which it is named, and Cabramurra, the highest town in Australia. Its borders contain a mix of rugged mountains and wildern .... The Port Phillip Trail and Dam Trail pass through Tantangara. Heritage listings Tantangara has a number of heritage-listed sites, including: * Currango Homestead References Localities in New South Wales Snowy Monaro Regional Council {{NSW-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shotcrete
Shotcrete, gunite (), or sprayed concrete is concrete or mortar conveyed through a hose and pneumatically projected at high velocity onto a surface, as a construction technique, first used in 1907 invented by Carl Akeley. It is typically reinforced by conventional steel rods, steel mesh, or fibers. Shotcrete is usually an all-inclusive term for both the wet-mix and dry-mix versions invented by Akeley. In pool construction, however, ''shotcrete'' refers to wet mix and ''gunite'' to dry mix. In this context, these terms are not interchangeable. Shotcrete is placed and compacted/consolidated at the same time, due to the force with which it is ejected from the nozzle. It can be sprayed onto any type or shape of surface, including vertical or overhead areas. Shotcrete has the characteristics of high compressive strength, good durability, water tightness and frost resistance. History Shotcrete, then known as gunite, was invented in 1907 by American taxidermist Carl Akeley to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rock Bolt
A rock bolt is a long anchor bolt, for stabilizing rock excavations, which may be used in tunnels or rock cuts. It transfers load from the unstable exterior to the confined (and much stronger) interior of the rock mass. Rock bolts were first used in mining in the 1890s, with systematic use documented at the St Joseph Lead Mine in the U.S. in the 1920s. Rock bolts were applied to civil tunneling support in the U.S. and in Australia starting in the late 1940s. Rock bolts were used and further developed starting in 1947 by Australian engineers who began experimenting with four-meter-long expanding anchor rock bolts while working on the Snowy Mountains Scheme. As shown in the figure, rock bolts are almost always installed in a pattern, the design of which depends on the rock quality designation and the type of excavation. Rock bolts are an essential component of the New Austrian Tunneling method. As with anchor bolts, there are many proprietary rock bolt designs, with either a mec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Orica
Orica Limited () is an Australian-based multinational corporation that is one of the world's largest providers of commercial explosives and blasting systems to the mining, quarrying, oil and gas, and construction markets, a supplier of sodium cyanide for gold extraction, and a specialist provider of ground support services in mining and tunnelling. Orica has a workforce of around 15,000 employees and contractors, servicing customers across more than 100 countries. Orica is listed on the Australian Securities Exchange. It has in recent years been subject to a number of high-profile industrial accidents and fatalities. History Initially founded in 1874 as Jones, Scott and Co., a supplier of explosives during the Victorian gold rush, the company was bought by Nobel Industries. Nobel later merged with several British chemical manufacturers to form Imperial Chemical Industries. In 1928, Imperial Chemical Industries of Australia and New Zealand (ICIANZ) was incorporated to acqui ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Drilling And Blasting
Drilling and blasting is the controlled use of explosives and other methods, such as gas pressure blasting pyrotechnics, to break rock for excavation. It is practiced most often in mining, quarrying and civil engineering such as dam, tunnel or road construction. The result of rock blasting is often known as a rock cut. Drilling and blasting currently utilizes many different varieties of explosives with different compositions and performance properties. Higher velocity explosives are used for relatively hard rock in order to shatter and break the rock, while low velocity explosives are used in soft rocks to generate more gas pressure and a greater heaving effect. For instance, an early 20th-century blasting manual compared the effects of black powder to that of a wedge, and dynamite to that of a hammer. The most commonly used explosives in mining today are ANFO based blends due to lower cost than dynamite. Before the advent of tunnel boring machines (TBMs), drilling and blas ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sinkhole
A sinkhole is a depression or hole in the ground caused by some form of collapse of the surface layer. The term is sometimes used to refer to doline, enclosed depressions that are locally also known as ''vrtače'' and shakeholes, and to openings where surface water enters into underground passages known as ''ponor'', swallow hole or swallet. A ''cenote'' is a type of sinkhole that exposes groundwater underneath. A ''sink'' or ''stream sink'' are more general terms for sites that drain surface water, possibly by infiltration into sediment or crumbled rock. Most sinkholes are caused by karst processes – the chemical dissolution of carbonate rocks, collapse or suffosion processes. Sinkholes are usually circular and vary in size from tens to hundreds of meters both in diameter and depth, and vary in form from soil-lined bowls to bedrock-edged chasms. Sinkholes may form gradually or suddenly, and are found worldwide. Formation Natural processes Sinkholes may capture surf ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Florence Violet McKenzie
Florence Violet McKenzie ( Granville; 28 September 1890 – 23 May 1982), affectionately known as "Mrs Mac", was Australia's first female electrical engineer, founder of the Women's Emergency Signalling Corps (WESC) and lifelong promoter for technical education for women. She campaigned successfully to have some of her female trainees accepted into the all-male Navy, thereby originating the Women's Royal Australian Naval Service (WRANS). Some 12,000 servicemen passed through her signal instruction school in Sydney, acquiring skill in Morse code and visual signalling (flag semaphore and International Code of Signals). She set up her own electrical contracting business in 1918, and apprenticed herself to it, in order to meet the requirements of the Diploma in Electrical Engineering at Sydney Technical College Described at the time as Australia's "Mademoiselle Edison", in 1922 she became the first Australian woman to take out an amateur radio operator's licence. Throug ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tantangara, New South Wales
Tantangara is a locality in the Snowy Monaro Regional Council region of New South Wales, Australia. At the , Tantangara had a population of zero. It is the location of the Tantangara Dam on the Murrumbidgee River, part of the Snowy Mountains Scheme. Today, the entire locality is contained in the Kosciuszko National Park The Kosciuszko National Park () is a national park and contains mainland Australia's highest peak, Mount Kosciuszko, for which it is named, and Cabramurra, the highest town in Australia. Its borders contain a mix of rugged mountains and wildern .... The Port Phillip Trail and Dam Trail pass through Tantangara. Heritage listings Tantangara has a number of heritage-listed sites, including: * Currango Homestead References Localities in New South Wales Snowy Monaro Regional Council {{NSW-geo-stub ... [...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 disadvan ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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