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Both tunnels handle around 150,000 vehicles a day, making them two of the most trafficked tunnels in the world. The Honningsvåg Tunnel (4.443 km (2.76 mi) long) opened in 1999 on European route E69 in Norway as the world's northernmost road tunnel, except for mines (which exist on Svalbard ).
Learn about the history, methods, uses, and facts of tunnels and underground passageways. Explore how tunnels have been built for mining, transportation, water, and other purposes since ancient times.
From subterranean roadways to the network of tubes that form mass transit systems, tunnels are among the most critical pieces of infrastructure that keep our...
7 de abr. de 2016 · Explore the engineering feats and scenic wonders of tunnels that defy landscapes and connect continents. From the longest underwater tunnel to the deepest rail tunnel, see how tunnels push away water, burrow through mountains, or encase passengers in a protective shell.
Tunnels are generally grouped in four broad categories, depending on the material through which they pass: soft ground, consisting of soil and very weak rock; hard rock; soft rock, such as shale, chalk, and friable sandstone; and subaqueous.
Learn about the basics, types and challenges of tunnels, from mining to transportation. Find out how tunnels are built, what materials they are made of and how they resist pressure and loads.
Un túnel es una obra subterránea de carácter lineal que comunica dos puntos para el transporte de personas o materiales. Normalmente es artificial. Un túnel, o puente de bajar, puede servir para peatones o ciclistas, aunque generalmente sirve para dar paso al tráfico, para vehículos de motor, para ferrocarril o para un canal.
