m_30_dscf8919himmel_lowres

Heavy plate for
the urban tunnel in Madrid

Steel for a torque of 125,268 nKm

For the 3,650 m long northern tunnel of the inner-city motorway M-30 in Madrid the Spanish construction companies ordered one of the biggest tunnel boring machines in the world. With a maximum excavation diameter of 15.20 m the cutting head outperformed all dimensions in mechanical tunnel heading before. The tunnel boring machine has an installed torque of 125,268 kNm. To ensure the effectivity of the machine with the biggest excavation diameter at that time in high friction ground conditions a novel cutting head concept was developed.

This concept consists of an inner and an outer cutting head with a drill diameter of 7 m and 15.2 m respectively. They are located on one level and can be activated and moved separately. The steel that was used to build the tunnel boring machine is normalized construction steel S355. Some of the built in elements of the machine that are exposed to high stresses have a thickness of up to 200 mm.

Data

Country
Spain
Quality
S355J2G3
Diameter
15.2 m
Tonnage
7,500 t
Plate Thickness
up to 200 mm
Project
Mega-Tunnel below Madrid

Contact persons

20210324084538-dickmann

Christoph Dickmann
Head of Sales Department, Machinery & Construction Equipment, Protection Steel

Phone: +49 6831 472385
Fax: +49 6831 47992681
E-Mail

20221012111603-klemm_2022

Johannes Klemm
Head of Marketing & Technical Support, Machinery & Construction Equipment, Steel Service Center, Plate Processing, Protection Steel

Phone: +49 6831 475658
Fax: +49 6831 47999036
E-Mail