The document discusses challenges in tunnelling projects and how having a single responsible partner can help. It provides examples of Pöyry's extensive experience with complex tunnelling projects worldwide. Pöyry offers expertise across all project phases in areas such as geotechnical engineering, rock mechanics, TBM tunnelling, and working in urban environments to help clients deliver projects successfully.

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ROCK SOLID EXPERTISE
SUCCESSFUL TUNNELLING PROJECT –
WHAT MAKES THE DIFFERENCE
12 March 2015
Antti Nykänen

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 Many interfaces within a project require intense coordination
 Inaccurate geotechnical information leads to wrong cost estimates and delays in construction
 Construction works in densely populated areas disturb citizens
 Many TBM projects starting up in Scandinavia, not too much earlier experiences
 Project teams have little knowledge about specific local conditions – cooperation with local partners and
authorities is not as fluent as it could be
TYPICAL CHALLENGES IN TUNNELLING PROJECT
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Benefits of having one responsible partner throughout the project:
 Clear roles and responsibilities provide seamless transition
to the next phase in the project
 Insight across disciplines (tunnel design, tunnel infrastructure design
(e.g. ventilation, electrical and mechanical installations, fire safety) ensures
holistic approach and that the needs of the end-users guide
both design and execution
WE CAN SUPPORT YOU IN ALL PROJECT PHASES
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We can support you in:
• Studies and investigations
• Basic and detailed engineering
• Design review / 3rd party audit
• Construction supervision and
site inspection
• Measurements, monitoring and
documentation
• Inspections and refurbishment
READ MORE ABOUT OUR SERVICES

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ALPTRANSIT GOTTHARD BASE TUNNEL, SWITZERLAND
 Client:
– Alp Transit Gotthard AG, Switzerland
 Project:
– Twin-tube high-speed railway tunnel, 57 km:
world’s longest rail tunnel
 Wide range of services delivered in the course of
20 years:
– Environment: environmental impact assessments, landscape
planning, environmental construction supervision, project
assistance
– Tunnelling: studies, preliminary design, tender design,
construction design, tender process, tender evaluation, final
design and construction supervision
– Electromechanics: design, tender process for tunnel and
railway facilities
– Rail traffic: technical coordination & organisational support
– Ventilation/safety: aerodynamic and thermodynamic studies,
design of ventilation for construction and operation, design
and tender process for operational and for cross passage
ventilation
 Services period:
– 1994–2016
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Read more:
Realising the masterpiece of engineering

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Today’s modern infrastructure is often built in ‘soft rock’ (soil) or in an urban environment. This is far
more complex than in a greenfield project. To make a demanding project successful, we provide:
 Proven methods for safe tunnelling in soil conditions
 Tailor-made solutions for excavations under existing structures and buildings
 First-hand experience with the realisation of complex projects in populated areas
 Logistic concepts to keep the city operational
 Methods to minimise negative impact on the population and the environment
SOFT ROCK TUNNELLING AND PROJECTS IN URBAN AREAS
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READ MORE ABOUT OUR SERVICES

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CROSS-CITY RAILWAY LINK, ZÜRICH, SWITZERLAND
 Client:
– SBB Swiss Federal Railways
 Project:
– New underground station and connecting tunnels
underneath the existing main station. Tunnelling
through river sediments by applying an innovative
combination of various construction techniques.
Railway operations and public services remaining
fully functional throughout the construction period.
 Services:
– Conceptual studies
– Preliminary and detailed design
– Tendering
– Construction supervision
 Services period:
– 2000 - 2014
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We provide profound expertise in the areas of geotechnical investigation and ground characterisation,
structural geology and geophysics, rock stress measurements and analysis, numerical analysis and
2D/3D-modelling, geotechnical design, excavation and support measures. This will contribute to:
 Solid cost estimates and construction schedules
 Optimised and most efficient construction planning
 Safe solutions during construction and operation
RELIABLE INFORMATION ABOUT THE GEOLOGICAL CONDITIONS:
COST EFFICIENCY AND KEEPING THE SCHEDULES
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READ MORE ABOUT OUR SERVICES

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ROCK STRESS MEASUREMENT AND INTERPRETATION USING
THE OVERCORING TECHNIQUE WITH THE BORRE PROBE
 Client:
– Swedish Nuclear Fuel and Waste Management Co,
over 100 measuring points
– Statens vegvesen, Oslo, Norway (2012)
– Statens vegvesen, Stavanger, Norway (2012)
– Statens vegvesen, Trondheim, Norway (2012)
– Boliden Mineral AB, Skellefteå, Sweden (2011)
– LKAB, Sweden. Including development of new
measuring technique and monitoring (2013-2015)
 Services:
– Measuring of rock stresses
– Interpretation of rock stress regime
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Whether for long tunnels or in difficult ground conditions, mechanised tunnelling with a tunnel boring
machine (TBM) provides often the most economical solution. We can support you with our long-lasting
experience with all TBM types and concepts, both in hard rock and soil.
 Analysis and advice in the selection of the most suitable tunnelling method
 Concepts and specifications for successful TBM tunnelling
 Proven design solutions for all types of TBM tunnels
 Monitoring tools and risk management during the construction phase
THOUSANDS OF KILOMETRES OF TBM EXPERTISE
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READ MORE ABOUT OUR SERVICES

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TUNNEL EMISOR ORIENTE, MEXICO
 Client:
– CONAGUA (Comisión Nacional del Agua)
 Project:
– Construction of a 62 km long sewage pipeline, inner
diameter 7 m, between Mexico City and Hidalgo.
One of the longest wastewater tunnels in the
world. Excavation through difficult ground conditions
with six earth-pressure balanced shield TBM, up to
8.9 m diameter. Segmented lining.
 Services:
– Evaluation of proposals and programming
– Identification and assessment of risks
– Real-time evaluation of tunnelling data during
construction
– Technical advice to the Client with regard to TBM
tunnelling and risk management
 Services period:
– 2010–2014
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Read how Emisor Oriente tunnel helps to mitigate flood
risk (in English)

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In every project, there are things you cannot anticipate beforehand.
Small things can create big delays, unless you don’t get the support quickly.
 Our local experts are present in most parts of Scandinavia,
helping you to get expert advice quickly, avoiding delays –
and extra costs – in project execution
 Global network of experts to support in specific challenges
EXPERT ADVICE
WHEN YOU NEED IT
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READ MORE ABOUT OUR SERVICES

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RING RAIL LINE – RAIL CONNECTION TO HELSINKI AIRPORT,
FINLAND
 Client:
– The Finnish Transport Agency (Rail Administration)
 Project:
– Railway twin tunnel, total length 8 km, drill and blast
– 4 underground stations
 Services:
Detailed design including:
– Architectural design
– Rail engineering
– Rock engineering
– Structural engineering
– Geotechnical engineering
– HVAC engineering
3D CFD simulations of the ventilation system to verify
and confirm compliance with the fire safety
requirements.
 Services period:
– 2008–2014
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TUNNEL INSPECTIONS, OSLO, NORWAY
 Client:
– Statens Vegvesen
 Project:
– Rock mechanical inspections of road tunnels
 Services:
– Maintenance inspections of 22 road tunnels
– When appropriate, establishing plans for detailed
inspections and investigations in critical areas
– Performing detailed inspections
– Services period 2013-2015
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Clients
Unique
Lifecycle
Partner
Unique
Lifecycle
Partner
Local
Relation-
ships
Local
Relation-
ships
World-
class
expertise
World-
class
expertise
PÖYRY TODAY - CONSULTING AND ENGINEERING EXPERTS
Pöyry is an international consulting and
engineering company, dedicated to
serving clients in infrastructure, energy
and industrial sectors
 6,000 experts
 10,000+ projects delivered annually
 Solutions for tunnels and underground
structures for transportation, mining,
hydropower, nuclear waste repositories,
civil and defence shelters, parking facilities
as well as water supply
 EUR 571 million net sales in 2014
FEBRUARYY 2015
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ENGINEERING, GEOLOGY AND ROCK MECHANICS
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We want to be your preferred partner for underground projects. We provide:
 Expertise to mitigate risks and ensure profitable projects
 Expert support in each phase of the project
 Solutions and experience proven in most demanding projects all over the world
 Local network of competent specialists close to you

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THANK YOU!
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I’M HAPPY TO TELL YOU MORE – GIVE ME A CALL OR EMAIL:
ANTTI NYKÄNEN
MARKETING & SALES MANAGER, REGIONAL OPERATIONS NORTHERN EUROPE
MAIL: ANTTI.NYKANEN@POYRY.COM
PHONE: +358 400 372 825
LINKEDIN: http://fi.linkedin.com/pub/antti-nyk%C3%A4nen/13/903/622