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 TBMsGuadarrama Tunnels (29 Km) 4 TBMsLine 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 KmDrilled 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 TLote 2 = 300 TLote 3 = 1.030 TLote 4 = 720 T

PAJARES TUNNELS (LEÓN-ASTURIAS)

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

Total Length = 7 KmDrilled 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 KmDrilled 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 failsThe main problems are fails and soft grounds. Not very much water ingressConsume of Geofoam = 969 TConsume of Geoflex = 63 T

GUADARRAMA TUNNELS (MADRID-SEGOVIA)

Lenght = 29,5 KmDrilled by 4 TBMs with double shield, 2 in each side of the tunnels.The geology was mainly granite and plutonic rocksThey had a lot of problems with failsConsume of Geofoam = 262 T.Consume of Geoflex = 6 T.

LINE 9 (Barcelona Metro)

Length = 8 KmDrilled 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 TConsume of Geoflex = 63 T