Ottawa LRT Tunnel Construction Update

OCT 4 –6, 2015 • Queens University • Kingston, ON Canada Challenges and Innovations in Tunnelling

Tom Middlebrook, Humberto Ferrer DRAGADOS CANADA Oct 5th, 2015

Tunnelling Association of Canada Association Canadienne Des Tunnels Agenda

Self Introduction Dragados Ottawa LRT Tunnel Station Construction Techniques

Tunnelling Association of Canada (TAC) –Ontario Chapter Challenges and Innovations in Tunnelling Tom Middlebrook

Sr. Vice President, Business Development – Eastern Canada Dragados Canada

Previously… MMM Group – Urban Mobility MRC – Transit Consultant Toronto Transit Commission – Chief Engineer Smaller Construction Companies

Tunnelling Association of Canada (TAC) –Ontario Chapter Challenges and Innovations in Tunnelling Tunnelling Association of Canada (TAC) –Ontario Chapter Challenges and Innovations in Tunnelling4 Tunnelling Association of Canada (TAC) –Ontario Chapter Challenges and Innovations in Tunnelling5 Tunnelling Association of Canada (TAC) –Ontario Chapter Challenges and Innovations in Tunnelling6 Dragados ‐ Global Presence

• Argentina • Colombia • Poland • United Kingdom • Australia • Ireland • Portugal • Venezuela • Canada • Greece • Spain • Chile • Peru • United States

Tunnelling Association of Canada (TAC) –Ontario Chapter Challenges and Innovations in Tunnelling Dragados in North America

December 2005  In December 2005, Dragados USA began operating in the United States.

January 2008  Dragados Canada opened its headquarters office in Toronto

North American Companies Acquired

Tunnelling Association of Canada (TAC) –Ontario Chapter Challenges and Innovations in Tunnelling8 Services and Areas of Expertise

 Major Projects  Alternative Project Delivery  Design‐Build  Public Private Partnership (P3)

Water and Underground .Concrete structures . Bridges . Canals .Coastal Work . Highways and roads . Caverns .Dredging and Fill . Railroads . Dams .Marine Work . Mass transit . Hydroelectric Power Plant .Beach Regeneration . Underground . Water Tunnels .Floating Equipment . Airports . Water Supply .Ports .Docks Transportation Infrastructure Marine

Tunnelling Association of Canada (TAC) –Ontario Chapter Challenges and Innovations in Tunnelling CITY BELOW THE CITY

Create new urban Increase the quality of spaces in life congested areas Sustainable growth

Free surface for citizens Underground infrastructures

Tunnelling Association of Canada (TAC) –Ontario Chapter Challenges and Innovations in Tunnelling NEW INFRASTRUCTURE IS BUILD FOR THE USER’S BENEFIT HOWEVER DURING CONSTRUCTION THE NEIGBOURGHOOD IS DISTURBED

AMONG THE MULTIPLE TECHNOLOGIES WE ARE OBLIGED TO LOOK FOR THE LESS DISRUPTIVE ONES

Tunnelling Association of Canada (TAC) –Ontario Chapter Challenges and Innovations in Tunnelling Traffic management

Social cost Fuel consumption Longer journeys Higher carbon footprint Higher risk of accident

Tunnelling Association of Canada (TAC) –Ontario Chapter Challenges and Innovations in Tunnelling •Water •Gas •Sewage Utilities •Phone •TV relocation •Communications •Traffic control •Confidential org. •Unknown

Request Project Permits schedule and Approvals cost Relocation by others (Lack of Final green light control)

Tunnelling Association of Canada (TAC) –Ontario Chapter Challenges and Innovations in Tunnelling Business loss –SOCIAL COST

Tunnelling Association of Canada (TAC) –Ontario Chapter Challenges and Innovations in Tunnelling Confederation Line, Ottawa

Tunnelling Association of Canada (TAC) –Ontario Chapter Challenges and Innovations in Tunnelling OTTAWA LRT TUNNEL Confederation Line

Tunnelling Association of Canada (TAC) –Ontario Chapter Challenges and Innovations in Tunnelling Sponsors Rideau Transit Group

Equity Developers Project Co

Design Build Joint Venture Maintenance Team

Engineering Joint Venture

and others

Tunnelling Association of Canada (TAC) –Ontario Chapter Challenges and Innovations in Tunnelling Confederation Line LRT 12.5 km project with 10km at grade in existing BRT Right‐of‐Way. Biggest problem for the BRT was downtown –this has been solved by a 2.5 km tunnel from between uOttawa and Pimisi

Tunnelling Association of Canada (TAC) –Ontario Chapter Challenges and Innovations in Tunnelling Underground works 2.530 m running tunnel twin track 3 mined stations: Lyon, Parliament and Rideau

Rideau

Lyon

Parliament

Tunnelling Association of Canada (TAC) –Ontario Chapter Challenges and Innovations in Tunnelling OTTAWA Geology

Sound limestone interbedded with shale from the Lindsay and Verulam formations

Compress strength varies from 50 to 90 MPa and its RQD from 30 to 90

Overlaying this sedimentary ground, glacial deposits of clay and fines including a paleovalley at Rideau

Tunnelling Association of Canada (TAC) –Ontario Chapter Challenges and Innovations in Tunnelling DESIGN SCHEME

Pros Cons

Lower Cost Higher risk of settlement SINGLE TUNNEL Flexibility in operation minimize by rock quality

Multiple faces Higher cost and schedule TWIN TUNNEL Overlapping of Potential impact construction activities on building basement

Tunnelling Association of Canada (TAC) –Ontario Chapter Challenges and Innovations in Tunnelling EXCAVATION PROCEDURES Pros Cons

Paleovalley Speed Possible damage to building basement TBM Open mode Coordination with stations One pass lining 1.5‐2 years TBM procurement Speed Urban restrictions Drill & Blast Economy Noise Multi face Vibrations

Flexibility, Geometry Lower speed / face Mechanical Multiple faces Mobilize quickly

Tunnelling Association of Canada (TAC) –Ontario Chapter Challenges and Innovations in Tunnelling MECHANICAL EXCAVATION

30 m3/h

Tunnelling Association of Canada (TAC) –Ontario Chapter Challenges and Innovations in Tunnelling 3 ROADHEADER SANDVIK MT‐720

6 SCOOPTRAM CAT R1600G Tunnelling Association of Canada (TAC) –Ontario Chapter Challenges and Innovations in Tunnelling SITE ORGANISATION

Tunnelling Association of Canada (TAC) –Ontario Chapter Challenges and Innovations in Tunnelling WEST PORTAL

Tunnelling Association of Canada (TAC) –Ontario Chapter Challenges and Innovations in Tunnelling Intermediate shaft

Tunnelling Association of Canada (TAC) –Ontario Chapter Challenges and Innovations in Tunnelling EAST PORTAL

Ottawa Ottawa University University

Apartment complex

East Portal

University residential complex

Tunnelling Association of Canada (TAC) –Ontario Chapter Challenges and Innovations in Tunnelling Running tunnel

Tunnelling Association of Canada (TAC) –Ontario Chapter Challenges and Innovations in Tunnelling Innovations in Tunneling

Tunnelling Association of Canada (TAC) –Ontario Chapter Challenges and Innovations in Tunnelling Station Construction Challenges

• Large Span ~18 m • Low Overburden ~10 m • Significant Potential for impact on buildings • Obstructions: rock dowels & tie backs • Mixed Ground Conditions

Tunnelling Association of Canada (TAC) –Ontario Chapter Challenges and Innovations in Tunnelling LYON Station

Tunnelling Association of Canada (TAC) –Ontario Chapter Challenges and Innovations in Tunnelling Utilities

Low rock cover

Rock bolts and tie backs Adjacent buildings

Tunnelling Association of Canada (TAC) –Ontario Chapter Challenges and Innovations in Tunnelling OTTAWA

Tunnelling Association of Canada (TAC) –Ontario Chapter Challenges and Innovations in Tunnelling Key Design Issue

Potential Load transfer onto the buildings

Tunnelling Association of Canada (TAC) –Ontario Chapter Challenges and Innovations in Tunnelling Solution – Tension Ties

Tunnelling Association of Canada (TAC) –Ontario Chapter Challenges and Innovations in Tunnelling Confirmation – FE Analysis

Tension ties / No ties Tunnelling Association of Canada (TAC) –Ontario Chapter Challenges and Innovations in Tunnelling Sequencing

3 & 4 5

6 Tunnelling Association of Canada (TAC) –Ontario Chapter Challenges and Innovations in Tunnelling LYON Station PARLIAMENT Station

236’ 246’ 200’ 321’

2 a 3 1 1 2 2 a a b Excavation b 2 a b 2 stages b 3 3 1 1 a b 4 a b

No Ties Ties

Tunnelling Association of Canada (TAC) –Ontario Chapter Challenges and Innovations in Tunnelling Building assessment

LYON Station

Tunnelling Association of Canada (TAC) –Ontario Chapter Challenges and Innovations in Tunnelling Building assessment

PARLIAMENT Station

Tunnelling Association of Canada (TAC) –Ontario Chapter Challenges and Innovations in Tunnelling