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Support reinforcement works at km 6+250 of Topo tunnel 3 (Donostia-Hendaia).

Date 23/12/2021
Type of works Conservation and maintenance, Tunnels

Project description

Tunnel 3 belongs to the Donostia-Hendaia line of the conventional Basque Railway Network - Euskal Trenbide Sarea, (ETS) and is located in Donosti, in the province of Gipuzkoa, between the stations of Herrera and Pasaia.

It is a 368-meter-long, electrified single-track tunnel under the town center, with a masonry support-lining element in the vast majority of the tunnel.

The reinforcement and stabilization works have been carried out in a section between PP.KK. 6+235 to 6+270 with shotcrete reinforced with polypropylene fibers and placement of twenty-five millimeter passive bolts.

These works were carried out in maintenance band (night time), without railway traffic cut.

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