Tunnelera

Tunnelera refers to a type of tunneling machine. These machines are specialized equipment used for excavation of tunnels. They are typically cylindrical in shape and operate by boring through the earth or rock. The front of a tunnelera is equipped with a rotating cutter head that breaks up the material. This material is then conveyed away from the face of the tunnel, often by a conveyor belt system.

Tunneleras are employed in various construction projects, including subways, railway lines, water mains, and road tunnels. Their use can significantly speed up the excavation process compared to traditional methods like drilling and blasting. Different types of tunneleras exist, designed to handle various ground conditions, from soft soil to hard rock. The selection of a tunnelera depends on factors such as the geology of the site, the diameter of the tunnel, and the required excavation rate.

The operation of a tunnelera is a complex engineering feat. The machine is typically launched from a pre-excavated shaft. As it bores forward, segments of pre-fabricated lining are installed behind the machine to support the newly excavated tunnel walls. This process ensures the stability of the tunnel as it is being created. Tunneleras are a significant advancement in modern tunneling technology, enabling the construction of longer, larger, and more complex underground structures.