EPB Operation under High Cover and Pressure to Avoid Interferences with Rome Ancient Buildings

A. Ciamei1 , M. Monina1, A. Sciotti2, R. Ginanneschi1, M. D’Ambrosio1 1S.E.L.I. Spa, Rome, Italy; 2Roma Metropolitane Srl, Rome, Italy

WTC - Vancouver, May 2010 nanche ur to t ti l oni o n jet Va J Adri at ico Tal en ti Ka O Li nea D Linea B1 Prati Fi scal i Conca d'Oro Villa Chigi Li nea B Nemorense Gondar Reb Verbano ni ib Annibaliano urti Pon b a b ia Buenos Ai res n t Li nea C Noment ana ti ti Ti S. e M o o ur M o i ib . del Soccoram in Fiume Bol ogna T Qui nti li ani Mon Pi Cl odi o- Mazzi ni m na m ttavian la g et ol o O Lepant F a ra Sp lat Li nea A a a s ini ia li Ri sorgi ment o o t el re Barberi ni Au S.Pi etro epubbl ica Castro Pretorio Batt i s Corn e S.Sil vestro R al l V Chi esa Nuova Ter mi ni Termi ni Bal do degl i Ubaldi Argenti na Venezi a Ci pro- Musei Vati cani ta . E i es o d at S. Cosi mat o ri al to Lo Pi gneto M Col osseo Vit Manzoni i Ci rc o Massi mo ann le iov o G n ma a Ro Tea Ni evo Amba Aradam San e o go Centocelrin ccat n i d a Re di d i ol ti ardeni re Sp li G r g net illo Parco a Tr ast ever e Pi ramide Ponte Lu Mi rt i Al essan To Gi el am Tuscolana Gi ard i ca a Osti ense Ostiense re Ang ai Anti r ni Furi o C a no To o Fermi Garbatel l a rre G el di da verti n Appi a To e C a Tr tt C i o ro a Parco d uadraro t G n Lungotevere Dante Basilica S.Paolo i- co Q dra nta an Ar ua io Fo netta Al b g la io a olli orta Furba- co no ur C P umi di o Q ri Bol o cch ta Pian due Torri N Luci o Sest a n ol t Ag Fi no raniti ric o G Pa ugust Ag iul i a Linea C G Linea A Magl i ana Nuova Sub na Linea D Cinecittà i a an Anagn agl i M Li nea B R EU WTC - Vancouver, May 2010 Project facts:

Conca d’oro- section ¾Twin TBM bored tunnels 6.79 m cut diameter ¾Precast segmental lining ¾3500m each drive ¾5.8m internal diameter, 350mm thickness ¾3 stations along alignment

Conca d’oro- section ¾One TBM bored tunnel 9.79 m cut diameter ¾Precast segmental lining ¾1000m single drive ¾8.65m internal diameter, 400mm thickness WTC - Vancouver, May 2010 ANNIBALIANO Outbound GONDAR Inbound

BOLOGNA JONIO CONCA D’ORO

excavation excavation

WTC - Vancouver, May 2010 Geology and vertical alignment

BOLOGNA ANNIBALIANO CONCA GONDAR D’ORO

Water table Recent Alluvium Max slope 4%

Pleistocene Sedimentary WTC - Vancouver, May 2010 Challenge: UNDERPASSAGE & STATION

GONDAR MILANO- ROMA FAST ANIENE ANNIBALIANO RAILWAY RIVER

Inbound

Outbound

WTC - Vancouver, May 2010 EPB & GROUTING pressure [bar] vs. ring number

12

1 0 8

6 Average 4 bar 4

2 Average 3 bar 0 1 21 41 61 81 101 121 141 161 181 201 221 241 261 281 301 321 341 361 381 (top sensor)

WTC - Vancouver, May 2010 Surface settlement: negligible

Average 4 mm 417 . 3.407 3.397 3.387 3.377 3.367 3.357 3.347 3.337 3.327 3.317 3.307 3.297 3.287 3.277 3.267 3.257 3.247 3.237 3.227 3.217 3.207 3.197 3.187 3.177 3.167 3.157 3

WTC - Vancouver, May 2010 TBM current postion --- Completion expected by end 2010

ANNIBALIANO

GONDAR BOLOGNA JONIO CONCA D’ORO

Inbound

Outbound

WTC - Vancouver, May 2010 THANK YOU FOR THE ATTENTION

WTC - Vancouver, May 2010