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Gousselerbierg Tunnel
The Gousselerbierg Tunnel is a pair of parallel road tunnels in the canton of Mersch, in central Luxembourg. The tunnels are named for the hill through which they pass, near the town of Gosseldange, in the commune of Lintgen. At 2,695 metres (8,842 ft), the Gousselerbierg Tunnel is the second-longest tunnel in the country, after the Grouft Tunnel, at 2,950 metres (9,678 ft). The tunnel carries the A7 motorway, and is the first of three major tunnels on the route of the road, together with the Grouft Tunnel and the Stafelter Tunnel (1,850 m). Each of the twin tunnels contains two lanes of traffic in one direction. At its maximum, the tunnel lies 115 metres (377 ft) below the surface of the hill. The tunnel was constructed using the New Austrian Tunnelling method, relying on the stress of the surrounding rock to stabilise the tunnel. Preparatory work on the tunnel began on 17 April 2000, and drilling work began on 21 November of the same year. The breakthrough ceremony was h ... [...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 safe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lane
In road transport, a lane is part of a roadway that is designated to be used by a single line of vehicles to control and guide drivers and reduce traffic conflicts. Most public roads ( highways) have at least two lanes, one for traffic in each direction, separated by lane markings. On multilane roadways and busier two-lane roads, lanes are designated with road surface markings. Major highways often have two multi-lane roadways separated by a median. Some roads and bridges that carry very low volumes of traffic are less than wide, and are only a single lane wide. Vehicles travelling in opposite directions must slow or stop to pass each other. In rural areas, these are often called country lanes. In urban areas, alleys are often only one lane wide. Urban and suburban one lane roads are often designated for one-way traffic. History For much of human history, roads did not need lane markings because most people walked or rode horses at relatively slow speeds. However, when ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tunnels In Luxembourg
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. Tun ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Explosive Material
An explosive (or explosive material) is a reactive substance that contains a great amount of potential energy that can produce an explosion if released suddenly, usually accompanied by the production of light, heat, sound, and pressure. An explosive charge is a measured quantity of explosive material, which may either be composed solely of one ingredient or be a mixture containing at least two substances. The potential energy stored in an explosive material may, for example, be * chemical energy, such as nitroglycerin or grain dust * pressurized gas, such as a gas cylinder, aerosol can, or BLEVE * nuclear energy, such as in the fissile isotopes uranium-235 and plutonium-239 Explosive materials may be categorized by the speed at which they expand. Materials that detonate (the front of the chemical reaction moves faster through the material than the speed of sound) are said to be "high explosives" and materials that deflagrate are said to be "low explosives". Explosives ma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Euro
The euro (symbol: €; code: EUR) is the official currency of 19 out of the member states of the European Union (EU). This group of states is known as the eurozone or, officially, the euro area, and includes about 340 million citizens . The euro is divided into 100 cents. The currency is also used officially by the institutions of the European Union, by four European microstates that are not EU members, the British Overseas Territory of Akrotiri and Dhekelia, as well as unilaterally by Montenegro and Kosovo. Outside Europe, a number of special territories of EU members also use the euro as their currency. Additionally, over 200 million people worldwide use currencies pegged to the euro. As of 2013, the euro is the second-largest reserve currency as well as the second-most traded currency in the world after the United States dollar. , with more than €1.3 trillion in circulation, the euro has one of the highest combined values of banknotes and coins in c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Henri, Grand Duke Of Luxembourg
Henri (french: Henri Albert Gabriel Félix Marie Guillaume, ; born 16 April 1955) is the Grand Duke of Luxembourg. He has reigned since 7 October 2000. Henri, the eldest son of Grand Duke Jean and Princess Joséphine-Charlotte of Belgium, is a first cousin of King Philippe of Belgium. In 2019, Henri's net worth was estimated around US$4 billion. Childhood Prince Henri was born on 16 April 1955, at the Betzdorf Castle in Luxembourg as the second child and first son of Hereditary Grand Duke Jean of Luxembourg and his wife, Princess Joséphine-Charlotte of Belgium. His father was the eldest son of Grand Duchess Charlotte of Luxembourg by her husband, Prince Félix of Bourbon-Parma. His mother was the only daughter of King Leopold III of Belgium by his first wife, Princess Astrid of Sweden. The prince's godparents were the Prince of Liège (his maternal uncle) and Princess Marie Gabriele (his paternal aunt). Henri has four siblings: Archduchess Marie Astrid of Austria (bo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Grand Duke Of Luxembourg
The Grand Duke of Luxembourg ( lb, Groussherzog vu Lëtzebuerg, french: Grand-duc de Luxembourg, german: Großherzog von Luxemburg) is the monarchical head of state of Luxembourg. Luxembourg has been a grand duchy since 15 March 1815, when it was created from territory of the former Duchy of Luxembourg. It was in personal union with the United Kingdom of the Netherlands until 1890 under the House of Orange-Nassau. Luxembourg is the world's only sovereign grand duchy and since 1815, there have been nine monarchs, including the incumbent, Henri. Constitutional role The constitution of Luxembourg defines the grand duke's position: :The grand duke is the head of state, symbol of its unity, and guarantor of national independence. He exercises executive power in accordance with the constitution and the laws of the country. After a constitutional change (to article 34) in December 2008 resulting from Henri's refusal to assent to a law legalizing euthanasia, laws now no longe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tunnel Hole-through
Tunnel hole-through, also called breakthrough, is the time, during the construction of a tunnel built from both ends, when the ends meet, and the accuracy of the survey work becomes evident. Many tunnels report breakthroughs with an error of only a few inches, for example: * the 1858 Blue Ridge Tunnel – * the 1944 Blue Ridge Tunnel replacement – - 1944 * the Lötschberg Base Tunnel – 10 cm *the Holland Tunnel - 1 cm See also * Cascade Tunnel References External links *Gautrain tunnel breakthrough***- 10 cm Tunnel construction {{Rail-transport-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stress (physics)
In continuum mechanics, stress is a physical quantity. It is a quantity that describes the magnitude of forces that cause deformation. Stress is defined as ''force per unit area''. When an object is pulled apart by a force it will cause elongation which is also known as deformation, like the stretching of an elastic band, it is called tensile stress. But, when the forces result in the compression of an object, it is called compressive stress. It results when forces like tension or compression act on a body. The greater this force and the smaller the cross-sectional area of the body on which it acts, the greater the stress. Therefore, stress is measured in newton per square meter (N/m2) or pascal (Pa). Stress expresses the internal forces that neighbouring particles of a continuous material exert on each other, while strain is the measure of the deformation of the material. For example, when a solid vertical bar is supporting an overhead weight, each particle in the bar pushes o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
New Austrian Tunnelling Method
The New Austrian tunneling method (NATM), also known as the sequential excavation method (SEM) or sprayed concrete lining method (SCL), is a method of modern tunnel design and construction employing sophisticated monitoring to optimize various wall reinforcement techniques based on the type of rock encountered as tunneling progresses. This technique first gained attention in the 1960s based on the work of Ladislaus von Rabcewicz, Leopold Müller, and Franz Pacher between 1957 and 1965 in Austria. The name NATM was intended to distinguish it from earlier methods, with its economic advantage of employing inherent geological strength available in the surrounding rock mass to stabilize the tunnel wherever possible rather than reinforcing the entire tunnel. NATM/SEM is generally thought to have helped revolutionise the modern tunneling industry. Many modern tunnels have used this excavation technique. The works built by the Sequential Excavation Method are very attractive from th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cantons Of Luxembourg
The 12 cantons ( lb, Kantonen or ; french: cantons ; german: Kantone ) of the Grand Duchy of Luxembourg are areas of local government at the first level of local administrative unit (LAU-1) in the European Union's Nomenclature of Territorial Units for Statistics for Eurostat purposes. They were subdivisions of the three districts of Luxembourg until 2015, when the district level of government was abolished. The cantons are in turn subdivided into 102 communes An intentional community is a voluntary residential community which is designed to have a high degree of social cohesion and teamwork from the start. The members of an intentional community typically hold a common social, political, religious, ... (i.e. municipalities). List The following list gives the names of the cantons in French and Luxembourgish (in that order) which are both official languages of the Grand Duchy of Luxembourg: See also * :Lists of cantons of Luxembourg * ISO 3166-2:LU Referenc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
