FTBA– Orlando Tuesday, March 20, 2012

Presented by:

Frank Guyamier Project Engineer

P3 PROJECT PARTNERS

90% Equity Partner

10% Equity Partner

Design/Build Contractor

VMS

Operator

Public Sponsors

Federal Support

• Bouygues TP specializes in underground works, complex civil engineering projects, structural works as well as public highways, port and transport infrastructures.

• Currently 15,000 workforce at 18 projects around the world, including the Port of Miami Tunnel Project.

• Globally known for building The Chunnel (The English Channel Tunnel), completed in 1994, Bouygues’ extensive tunneling experience includes:

– 71 Tunnels around the world since 1971 – 8 Tunnels currently under construction

– (Hong Kong, Cairo and Miami)

• 45 (57%) of those tunnels built by shield TBMs

Tunnel Experts

POMT Project

TWIN TUNNELS

• Tunnels are 4200 ft. long •(Previous 3900ft)

• +40 ft. under the bottom of Government Cut

• 5% Grade

• 5 cross passages

• Ground Improvement Required

Ground Improvement • Watson & Dodge Island SOEs/Ground Improvement:

– CSM SOE Walls – SOE Tie-backs – Type I Tie-downs (Minipiles) – Type II Tie-downs (Drilled Shafts) – TBM Break In/Out Plug (CSM with Secant Pile Infill) – SSM Column Ground Improvement – CSM Barrettes

SOIL TREATMENT • The complex and challenging Geology of South Florida

required specific treatment to receive the TBM due to the shallowness and proximity of the twin tunnels:

• Overburden • Barrettes • Shallow Soil Mixing (SSM)

CSM Barrettes Panels Shallow Soil Mixing 9” diameter SSM Tool

10’-23’ deep

Overburden

CTB Production for Overburden

CTB up to elevation (1400cy)

Overburden Construction: Assembling Concrete Panels

BCWF’S EXTENSIVE COMPLEMENTARY GEOTECHNICAL INVESTIGATION

• The Complementary Geotechnical Investigation included: – Standard penetration tests – Cone penetration tests – Sonic cores – Wells for permeability and water flow testing – Large diameter shafts

• On Watson Island, Dodge Island and in the Channel • 152 holes in CGI, in addition to FDOT’s 87 holes • Equates to an average spacing, portal to portal, of one

investigation hole every 32 feet

Mix Design:

• A pumpable, stable mix with low strength, high penetrability but high thixotropy, and excellent filtrate resistance (very difficult combination to achieve).

• Most unusual mix design which satisfies all criteria and has clearly performed well. This is indeed “the optimum grout mix” called for in the Geotechnical Baseline Report.

Grout Testing Program

FORMATION GROUTING OPTIMUM MIX

Break-out and ground improvement elevation

PLUG TUNNEL SHALLOW SOIL MIXING (SSM) OVERBURDEN SOIL

Overburden

Plug

LEGEND

Shallow soil mixing

WATSON ISLAND

WATSON ISLAND • Shift of MacArthur Causeway and Expansion of Bridge necessary to build:

• The TBM Launching Pit on MacArthur Causeway: 400ft x 100ft x 50ft. • The Tunnel access lanes.

• TBM assembled inside the pit. •42’ diameter/410 ft. long. • 12,000 lining segments • TBM Break-In 11/11/11 • Mines 20 hours a day

•Tunnel Support Operations under the bridge •Tunnel Soil Management

Bridge Widening

10ft on each side

15 Sea Piers, and 6 Land-Based…

Excavation of SOE

Tremie Concrete Pour

Dewatering

Step Tremie Pour

12,000 concrete segments will line

the POM Tunnel 5,000+ produced to date!

TBM Excavates and Erects

Thickness: 2 Feet Width: 5 Feet / 7 Inches Length: 14 Feet / 6 Inches Weight: 12 U.S. Tons

150-Year Durability Req.

PRECAST SEGMENTS

TBM Assembly / Break-In

25

26

TBM Break-In 11∙11∙11

30

34

TUNNEL OPERATIONS

TUNNEL SUPPORT OPERATIONS: Under MacArthur Bridge

• Batch Plant • Water Treatment Plant • Cooling and power systems • Mechanical Storage • TBM Access Ramp

• The TBM started boring November 11, 2011. • TBM runs 7 days a week, 20 hours a day = 14 months.

• TBM maintenance = 4 hours: 7:00 am to 11:00 am.

• Tunnel Spoil Management Area on Watson Island.

• To minimize impact to vehicle traffic, about 75% of spoils removal occurs between non-peak hours: 6:00pm and 7:00am.

• Street sweepers and water spray trucks operate daily to ensure roads remain clean.

• TBM is approximately 1,200 feet into its voyage.

Tunnel Operations

• Approximately 400,000 cubic yards of material will be excavated during the construction of the two tunnels.

– As the TBM bores, the excavated material is evacuated from the tunnel using a conveyor belt or a piping system.

• The conveyor and piping systems transport the soil out of the

tunnel to the Soil Management Area (SMA) on Watson Island. • The excavated material traverses across MacArthur Causeway

Eastbound and Parrot Jungle Trail by means of a fully enclosed overhead steel support structure.

Tunnel Excavation

Tunnel Spoils Management Conveyor System

Tunnel Spoils Management Spoils Basin

DODGE ISLAND

DODGE ISLAND

• Roadway reconfiguration ongoing on Dodge Island •TBM “Receiving Pit” SOE and Excavation now complete. • Tremie Concrete Pour and Dewatering next. • Pit is similar in size to Watson: About 400ft wide, 100ft long, 40ft deep. • TBM to break-through Summer 2012.

SOE Box

PROJECT HIGHLIGHTS

• Total Man Hours to date – 1,380,972

• Total Work Days to date – 800 Days

• Total Lost Time Accidents –ZERO

» SafetyStream

SAFETY FIRST BCWF’s Zero Tolerance

The Future…

QUESTIONS?