Main TBM Projects in Spain

MAIN TBM PROJECTS IN SPAIN

Abdalajis Tunnels (9 Km) 2 TBMs

Pajares Tunnels (25 Km) 5 TBMs

Tunnel del Perthus (8 Km)

San Pedro Tunnels (8 Km) 2 TBMs

Guadarrama Tunnels (29 Km) 4 TBMs

Line 9 (Barcelona Metro) 3 TBMs

MINOVA HAD DONE ITS MAIN INJECTION WORKS IN THESE PROJECTS AND IN

MORE THAN 70 TUNNELS.

ABDALAJIS TUNNELS (MÁLAGA)

Lenght = 9 Km

Drilled by 2 TBMs double shield.

The geology was clays bitominous, calcite, sandstones...sedimentary rocks

They had a lot of problems with fails, no competent ground, methane, cavities, high water ingress.

It was the main project in Minova

Consume of Geofoam =

1.200 T Sacyr TBM+ 1.040 T Dragados TBM

Consume of Geoflex =183 T in both TBMs

PAJARES TUNNELS (LEÓN-ASTURIAS)

Total Length = 25 Km

Drilled by 5 TBMs. 1 Double Shield (Lote 2) and 4 simple close shield.

The geology is very variable: calcite, quartzstones, sandstones, clays, coal... with a lot of fails.

The main problems are fails, karsts in calcites, quartz fracturated with a lot of water, very soft clays and cavities.

Consume of Geofoam at the moment.

Lote 1 = 250 T

Lote 2 = 300 T

Lote 3 = 1.030 T

Lote 4 = 720 T

PAJARES TUNNELS (LEÓN-ASTURIAS)

TUNNEL DEL PERTHUS (La Jonquera, border Spain-France)

Total Length = 7 Km

Drilled by 2 TBMs. 1 Double Shield

The geology is very variable: granite, quartzstones, sandstones, clays, with a lot of fails.

The main problems are fails, very soft clays and cavities karsts in calcites, quartz fracturated with a lot of water.

Consume of Geofoam.

1.166 T

SAN PEDRO TUNNELS (MADRID)

Length = 8 Km

Drilled by 2 open shield TBMs at the beginning. The other side is drilled by blasting methods.

One TBM was atrapped and they have finished the drilling it by blasting method. Just one TBM could drill all the 8 Km.

The geology are mainly plutonic and filonianic rocks but they are very meteorizated and have a lot of fails

The main problems are fails and soft grounds. Not very much water ingress

Consume of Geofoam = 969 T

Consume of Geoflex = 63 T

GUADARRAMA TUNNELS (MADRID-SEGOVIA)

Lenght = 29,5 Km

Drilled by 4 TBMs with double shield, 2 in each side of the tunnels.

The geology was mainly granite and plutonic rocks

They had a lot of problems with fails

Consume of Geofoam = 262 T.

Consume of Geoflex = 6 T.

LINE 9 (Barcelona Metro)

Length = 8 Km

Drilled by 3 TBMs. 1 Mix (NFM)and 2 simple close shield.

The geology is mainly granite, granite meteorizated, sands, clays...

The main problems are fails, cavities, meteorizated granite very soft, sands with high freatic level and thermal water.

Consume of Geofoam = 471 T

Consume of Geoflex = 63 T