The canals of the United Kingdom are a major part of the network of inland waterways in the United Kingdom. They have a varied history, from use for irrigation and transport, through becoming the focus of the Industrial Revolution, to today's role of recreational boating. Despite a period of abandonment, today the canal system in the United Kingdom is again increasing in use, with abandoned and derelict canals being reopened, and the construction of some new routes. Canals in England and Wales are maintained by navigation authorities. The biggest navigation authorities are the Canal & River Trust and the Environment Agency, but other canals are managed by companies, local authorities or charitable trusts.
The majority of canals in the United Kingdom can accommodate boats with a length of between and are now used primarily for leisure. There are a number of canals which are far larger than this, including New Junction Canal and the Gloucester and Sharpness Canal, which can accommodate boats with a length of up to . An incomparable purpose-built ship canal is the Manchester Ship Canal. Upon opening in 1894, it was the largest ship canal in the world, permitting ships with a length of up to to navigate its route.
History of the British canal system
Canals first saw use during the Roman occupation of the south of Great Britain and were used mainly for irrigation. The Romans also created several navigable canals, such as Foss Dyke, to link rivers, enabling increased transport inland by water.
The United Kingdom's navigable water network grew as the demand for industrial transport increased. The canals were key to the pace of the Industrial Revolution: roads at the time were unsuitable for large volumes of traffic. A system of very large pack horse trains had developed, but few roads were suitable for wheeled vehicles able to transport large amounts of materials (especially fragile manufactured goods such as pottery) quickly. Canal boats were much quicker, could carry large volumes, and were much safer for fragile items.
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The canal network of the United Kingdom played a vital role in the Industrial Revolution. The UK was the first country to develop a nationwide canal network which, at its peak, expanded to nearly in length. The canals allowed raw materials to be transported to a place of manufacture, and finished goods to be transported to consumers, more quickly and cheaply than by a land based route. The canal network was extensive and included feats of civil engineering such as the Anderton Boat Lift, the Manchester Ship Canal, the Worsley Navigable Levels and the Pontcysyllte Aqueduct.
Un canal est un cours d'eau artificiel, de section ouverte, navigable ou non. Il en existe trois grands types : lit de rivière canalisée, construction d'un canal latéral ensuite rempli avec l'eau de la rivière, ou construction de toutes pièces là où il n’existait pas de cours d'eau. Remarque : en français, le mot « chenal », de même origine étymologique que le mot « canal » — du latin canalis dérivé de canna, considéré souvent comme un synonyme, fait référence au lit d'un fleuve, ou à un passage ouvert à la navigation.
vignette|upright=1.2|Narrowboats modernes. Un narrowboat (litt. : « bateau étroit ») est un type de péniche au gabarit caractéristique, adapté à la navigation sur les . Dans le contexte des voies fluviales navigables britanniques, il désigne à l'origine les bateaux traditionnels construits aux , pour le transport des marchandises sur les canaux dont les écluses ont le plus souvent une largeur de sept pieds (), voire inférieure pour certaines.
Les aménagements hydrauliques sont indispensable pour garantir l'approvisionnement en énergie écophile et renouvelable, de même que l'approvisionnement en eau de bonne qualité et en quantité suffisant
Explore les structures hydrauliques dans les canaux et les galeries, couvrant les lignes de pression, les réflexions de marteau d'eau et les critères économiques pour la capacité du canal.
Explore la conception et la construction de canaux, de galeries et d'installations hydrauliques pour le transport de l'eau et les systèmes d'approvisionnement.
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