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Northolt Tunnel
The Northolt Tunnel is a high-speed railway tunnel currently under construction in Greater London, England, and will upon completion carry the High Speed 2 (HS2) railway line under the West London suburbs. The twin-bore tunnels will run for between Old Oak Common and Ruislip. , the first tunnel boring machine has completed 18% of its bore length. Plans for the construction of a tunnel were first unveiled in early 2013; it was hailed as being less disruptive and quicker to construct that a surface-based alignment. An option for the tunnel's extension along the Colne Valley to replace the proposed Colne Valley Viaduct was studied but rejected as unnecessarily costly during 2015. Extensive ground surveys along the intended route were conducted during the 2010s in advance of construction work. During April 2020, it was announced that a contract worth approximately £3.3billion had been awarded to a joint venture company, Skanska Costain Strabag, for the tunnel's construction. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
High Speed 2
High Speed 2 (HS2) is a planned high-speed railway line in England, the first phase of which is under construction in stages and due for completion between 2029 and 2033, depending on approval for later stages. The new line will run from its most southerly terminus, London, to its most northerly point, Manchester, with branches to Birmingham and the East Midlands. HS2 will be Britain's second purpose-built High-speed rail in the United Kingdom, high-speed line, the first being High Speed 1, which connects London to the Channel Tunnel. At its southern end, the line will terminate at London's London Euston railway station, Euston station while other termini will be Birmingham Curzon Street railway station, Birmingham Curzon Street station and Manchester Piccadilly station. In addition to these stations, the dedicated track will serve Old Oak Common railway station, Old Oak Common in west London, Birmingham Interchange, East Midlands Parkway railway station, East Midlands Parkway ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Old Oak Common Railway Station
Old Oak Common (OOC) is a railway station under construction on the site of the Old Oak Common traction maintenance depot to the west of London in Old Oak Common, approximately south of Willesden Junction station. When built, it is expected to be one of the largest rail hubs in London, at about in length and below surface level. The new station has been included as a part of the High Speed 2 line from London to Birmingham, covered by the High Speed Rail (London - West Midlands) Act 2017. This hybrid bill conferred powers to construct and maintain phase 1, including intermediate stations. The surrounding area, including possible above-station development, is controlled by the Old Oak and Park Royal Development Corporation set up in April 2015. The station will provide a major transport interchange with a number of other main line and commuter rail services, including the Elizabeth line and other services on the Great Western Main Line. The High Speed 2 line will be below gr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ruislip
Ruislip ( ) is an area in the London Borough of Hillingdon in West London, and in the historic county of Middlesex. Ruislip lies west-north-west of Charing Cross, London. The manor of Ruislip appears in the Domesday Book, and some of the earliest settlements still exist today, designated as local heritage sites. The parish church, St Martin's, dates back to the 13th century and remains in use. The buildings at the northern end of Ruislip High Street form the core of the original village square and are now Grade II listed. It originally featured a central water pump, but this was moved out of the road in the 1970s as a result of increased traffic. The expansion of the Metropolitan Railway from Harrow in the early 20th century acted as a catalyst for development in the area. Ruislip station opened in 1904, and a new Urban district (Great Britain and Ireland), urban district was created to reflect the forthcoming population growth; the Ruislip-Northwood Urban District split fr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
High-speed Rail
High-speed rail (HSR) is a type of rail system that runs significantly faster than traditional rail, using an integrated system of specialised rolling stock and dedicated tracks. While there is no single standard that applies worldwide, lines built to handle speeds above or upgraded lines in excess of are widely considered to be high-speed. The first high-speed rail system, the Tōkaidō Shinkansen, began operations in Japan in 1964 and was widely known as the bullet train. High-speed trains mostly operate on standard gauge tracks of continuously welded rail on grade-separated rights of way with large radii. However, certain regions with wider legacy railways, including Russia and Uzbekistan, have sought to develop a high speed railway network in Russian gauge. There are no narrow gauge high-speed trains; the fastest is the Cape gauge Spirit of Queensland at . Many countries have developed, or are currently building, high-speed rail infrastructure to connect major citie ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tunnel
A tunnel is an underground passageway, dug through surrounding soil, earth or rock, and enclosed except for the entrance and exit, commonly at each end. A pipeline is not a tunnel, though some recent tunnels have used immersed tube construction techniques rather than traditional tunnel boring methods. A tunnel may be for foot or vehicular road traffic, for rail traffic, or for a canal. The central portions of a rapid transit network are usually in the tunnel. Some tunnels are used as sewers or aqueducts to supply water for consumption or for hydroelectric stations. Utility tunnels are used for routing steam, chilled water, electrical power or telecommunication cables, as well as connecting buildings for convenient passage of people and equipment. Secret tunnels are built for military purposes, or by civilians for smuggling of weapons, contraband, or people. Special tunnels, such as wildlife crossings, are built to allow wildlife to cross human-made barriers safely. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Greater London
Greater may refer to: *Greatness, the state of being great *Greater than, in inequality (mathematics), inequality *Greater (film), ''Greater'' (film), a 2016 American film *Greater (flamingo), the oldest flamingo on record *Greater (song), "Greater" (song), by MercyMe, 2014 *Greater Bank, an Australian bank *Greater Media, an American media company See also * * {{Disambiguation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
England
England is a country that is part of the United Kingdom. It shares land borders with Wales to its west and Scotland to its north. The Irish Sea lies northwest and the Celtic Sea to the southwest. It is separated from continental Europe by the North Sea to the east and the English Channel to the south. The country covers five-eighths of the island of Great Britain, which lies in the North Atlantic, and includes over 100 smaller islands, such as the Isles of Scilly and the Isle of Wight. The area now called England was first inhabited by modern humans during the Upper Paleolithic period, but takes its name from the Angles, a Germanic tribe deriving its name from the Anglia peninsula, who settled during the 5th and 6th centuries. England became a unified state in the 10th century and has had a significant cultural and legal impact on the wider world since the Age of Discovery, which began during the 15th century. The English language, the Anglican Church, and Engli ... [...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] |
Colne Valley Viaduct
The Colne Valley Viaduct is a bridge, under construction as of 2023, which will carry the High Speed 2 railway over the Colne Valley Regional Park and the Grand Union Canal, in Hillingdon, west London. When completed, its length of and a weight of 116,000tonnes will make it the largest railway bridge in the UK. It is one of the largest single civil engineering works of HS2 Phase 1. A contract for the section of the railway pertaining to the viaduct was awarded during 2017 and the design concept was released to the public on 19 January 2018. Preparatory work commenced shortly thereafter, including a compulsory land purchase and the establishment of temporary facilities, including a factory, onsite. Construction of the viaduct commenced during March 2021 with completion of the main deck due to occur during 2024 with full completion expected for May 2025. Protestors have occasionally occupied the site, and allegations over the viaduct's aesthetic and environmental impact upon the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Joint Venture
A joint venture (JV) is a business entity created by two or more parties, generally characterized by shared ownership, shared returns and risks, and shared governance. Companies typically pursue joint ventures for one of four reasons: to access a new market, particularly Emerging market; to gain scale efficiencies by combining assets and operations; to share risk for major investments or projects; or to access skills and capabilities. According to Gerard Baynham of Water Street Partners, there has been much negative press about joint ventures, but objective data indicate that they may actually outperform wholly owned and controlled affiliates. He writes, "A different narrative emerged from our recent analysis of U.S. Department of Commerce (DOC) data, collected from more than 20,000 entities. According to the DOC data, foreign joint ventures of U.S. companies realized a 5.5 percent average return on assets (ROA), while those companies’ wholly owned and controlled affiliates ( ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Herrenknecht
Herrenknecht AG is a German company that manufactures tunnel boring machines, headquartered in Allmannsweier, Schwanau, Baden-Württemberg. It is the worldwide market leader for heavy tunnel boring machines. Roughly two-thirds of its 5,000 employees work at the company's headquarters in the installation of hydraulic and electronic components and final inspection. Approximately 300 work at three locations across China. The company has 82 subsidiaries around the world and has worked on 2,600 projects. History Martin Herrenknecht established the Martin Herrenknecht engineering company in 1975. Two years later, it became Herrenknecht GmbH with capital of 20 million euros. By 1984, Herrenknecht had opened Herrenknecht International Ltd. in Sunderland, England, its first foreign subsidiary. The company later acquired shares in Maschinen und Stahlbau GmbH of Dresden in 1991. Following the merger of the two companies in 1988, Herrenknecht became a joint-stock company (AG), expanded w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
