typical challenges in tunnelling
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ROCK SOLID EXPERTISE
SUCCESSFUL TUNNELLING PROJECT –WHAT MAKES THE DIFFERENCE12 March 2015Antti 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
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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 floodrisk (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 engineering3D 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
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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 NYKÄNENMARKETING & SALES MANAGER, REGIONAL OPERATIONS NORTHERN EUROPEMAIL: [email protected]: +358 400 372 825LINKEDIN: http://fi.linkedin.com/pub/antti-nyk%C3%A4nen/13/903/622