1. Main summit: 14 - 15 March 2011
Beach Rotana Hotel, Abu Dhabi, UAE
Under the patronage of: Officially supported by:
Plus!
The first five
delegates to register
and pay will
receive 1 night’s free
accomodation at the
conference hotel!
• Engineer Abdulla S. Al Shamsi, Executive Director of Municipal
Infrastructure and Assets, Municipality of Abu Dhabi City, UAE
• Olivier Vion, Executive Director, International Tunnelling
Association
• Engineer Sulaiman Al Hajri, Director of Roads Projects
Department, Directorate of Public Works, Sharjah Municipality
• Dr. Yahia Alhassani, Concrete Advisor and Project Manager
Lusail, Qatari Diar
• Learn about recently completed, current and proposed
tunnelling projects and identify opportunities for new contracts
• Evaluate key tunnelling projects and assess the lessons learned
that you can apply to your own projects
• Leverage the opportunity to meet key clients, project
management consultants and contractors to build your business
• Take-away keen insights into how you can deliver your projects
on time and on budget
Outstanding executive contributions providing essential insight from over 30 speakers including:
Attend Tunnels & Underground Construction Middle East to:
Designing, constructing and operating cost-effective, durable and safe tunnel
and underground construction projects
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2. Tel: +971 4 364 2975 Fax: +971 4 363 1938 Email: enquiry@iqpc.ae
Summit day one: Monday 14 March 2011
08:00 Conference registration
09:00 Conference inauguration and Chairman’s welcome
David Ball, President, The Concrete Society
Designing state-of-the-art tunnels for the 21st century
09:15 Welcome address: Recent developments and future
opportunities in Abu Dhabi for the tunnelling industry
• Understanding the development of tunnels in Abu Dhabi as a
part of Abu Dhabi Plan 2030
• Outlining the progress of key tunnel projects in Abu Dhabi
• Identifying lessons learned and future investment opportunities
Engineer Abdulla S. Al Shamsi, Executive Director of
Municipal Infrastructure and Assets, Abu Dhabi Municipality
09:45 Keynote presentation: Establishing best practice in
tunnelling projects
• Adopting a global perspective on sustainable solutions
• Developing an environmental legacy through tunnelling
• Balancing the conflicting demands of sustainability,
economics and politics
Olivier Vion, Executive Director, International Tunnelling
Association
10:15 Sharjah Diftah to Shis highway: Entering the record books
with the UAE’s longest rock tunnel
• Evaluating the design process of what has been called the
Middle East’s most challenging road and tunnel project
• Outlining the engineering challenges which have been
overcome to date; building out of wadis and tackling
flash flooding
• Drilling the tunnel and utilising explosives to blast through the
rock and the geological challenges that have been faced
• Constructing the tunnel using the New Austrian Tunnelling
Method (NATM); stabalisation of the tunnel with rock bolts and
spray concrete (shotcrete), before lining with a waterproof
membrane and permanent concrete inner shell
• Analysing existing challenges and future plans for completing
the second tunnel
Engineer Sulaiman Al Hajri, Director of Roads Projects
Department, Directorate of Public Works, Sharjah Municipality
10:45 Morning coffee and networking break
Meeting the construction challenges faced across the MENA region
11:15 Analysing challenges and solution associated with underground
and underwater concrete structures in mega projects
• Showcasing solutions adopted to resolve design imperfections
• Mitigating construction challenges and difficulties associated
with complex projects
• Examining durability requirements for a minimum 75 year
structure lifecycle
Dr. Yahia Alhassani, Concrete Advisor and Project Manager
Lusail, Qatari Diar
11:45 Sydney desalination project- Water delivery pipeline:
Tunnel drive beneath Botany Bay - marine recovery
• Outlining the Sydney desalination project and the creation of
the Water Delivery Alliance (WDA)
• Detailing the 835m TBM drive under Botany Bay
• Retrieval of the 17.4 m long TBM from the ocean floor upon
completion of the Botany Bay tunnel allowing for subsequent
use on the project Elements covered in the paper include
Evaluating the design and construction techniques utilised to
facilitate the tunnel bore and the recovery
• Installing the DN1800 water carrier pipeline
Steve Norman, Project Manager, McConnell Dowell
Abu Dhabi (Tunnels and Underground Division)
12:15 Pre-lunch address: Dätwyler Rubber
12:35 Networking lunch
13:35 Tunnel sewers: Planning and concept design considerations
• Decision making; gravity tunnel or shallow pumping system?
• Tunnel sizing and selection of construction methods
• Route and shaft location selection considerations
• Operational design and HSE issues
Marwan Ghannam, Senior Technical Director, Hyder Consulting
14:05 Design challenges for cut and cover tunnel projects
• Value engineering and long term performance; influence of
key design choices
• Local ground conditions and control of groundwater
draw-down effects
• Cut and cover vs. top down method
• Integral diaphragm walls vs. in-situ construction within
temporary walls; performance and constructability issues
• Past experiences with ground cavities in Abu Dhabi and
precautions for new projects
• Approaches to articulation and joints
• Approaches to waterproofing and achievement of
watertight sealant
• Mitigating risks caused by high salinity and high water table;
influence on materials and construction techniques
Eur. Ing. Javad Akhtar BSc DMS CEng FICE MCMI, Technical
Director, Hyder Consulting Middle East Ltd.
14:35 East Ltd. Panel discussion: Evaluating the region’s ground
conditions and the best methods and technologies for
overcoming them
• Analysing ground conditions, surface conditions, tunnel
dimensions, boring distance and construction period to
determine the best tunneling methods to utilise
• EPBM vs. Slurry TBM and experiences in the Middle East
• Recent technological advances and how these might be
deployed in the region
Panelists will include:
Eur. Ing. Javad Akhtar BSc DMS CEng FICE MCMI, Technical
Director, Hyder Consulting Middle East Ltd.
15:05 Afternoon coffee and networking break
Transport Projects
15:35 Learning from the experiences of building the Dubai Metro
As a number of countries across the Middle East region are
planning their own metro systems, lessons can be learned from
Dubai’s pioneering experiences:
• Tunnelling 13km of the light rail system utilising Mitsubishi
EPB-TBMs
• Analysing the ground conditions found and how the challenges
were overcome
• Future plans for delivering the next phases of the project and
how the lessons learned to date will be incorporated
Dr. Abdulssamie Haimoni, Deputy Director Rail Projects
Construction Department, Rail Agency – RTA
16:05 Evaluating the operational requirements of railway tunnels
As an increasingly large number of railways and metro systems
are being developed across the Middle East, it is important to
re-evaluate and assess the operational requirements of the
tunnels that these plans include:
• What are the requirements for railway tunnels and how do
these differ from road tunnels?
• How much input do the operators of the railway or metro
system need to have in the design of tunnels?
• Designing tunnels with exceptional in-built safety features; fire
protection, ventilation and ease of evacuation
Bassam Mansour, Expert - Trains and Railway Systems,
National Transport Authority
16:35 End of conference day one

3. 08:00 Networking breakfast
Transport Projects
09:00 The transport masterplan for Qatar: An example of
integrated future transport system development
As the population of Qatar continues to increase and
development progresses at a rapid rate, the transport
masterplan has been commissioned to evaluate the best way to
upgrade the road network and the public transport system:
• An analysis of the current transport conditions
• Forecasting the future land use, population growth, economic
conditions and consequently future transport demand
• Developing a transport system to accommodate the future
transport demand including:
* Road system (including tunnels)
* Public transport system (including tunnels)
* Networks and facilities for pedestrians and cyclists
* Transport management
* Transport demand measures
• Analysing the impact of proposed measures in different
scenarios: Financial, social, economical, environmental
and land use
• Outlining the process of selecting a preferred scenario
• Designing effective transport implementation plans
Dr Uwe Reiter, Director Project Management, PTV Doha
09:30 Implementing effective asset management strategies to
ensure that your transport project remains fit for purpose
• Considering the importance of asset management from the
outset of the project
• Evaluating the maintenance requirements of transport tunnels
• Planning your maintenance programme to sustain the desired
100-120 years lifespan of the structure
Confirmed Senior Representative, Atkins
10:00 Operating a 21st Century tunnel management system:
Al Salam Street case-study
As the Al Salam Street tunnel nears its opening, the focus of the
project team has shifted from design and construction to the
operation of the completed tunnel:
• Outlining the features of the state-of-the-art tunnel safety and
management system installed in the Al Salam Street tunnel:
* Ventilation system
* Fire detection system
* Lighting and electrical systems
* Fume sensors
* Traffic detection
• Detailing the emergency response plan and how the tunnel
management system alerts multiple stakeholders for efficient
response to maximise the safety of the users
Engineer Mazen Jaber, Head of Traffic Services, Abu Dhabi
Municipality
10:30 Morning coffee and networking break
Tunnel operation and maintenance
11:00 Ensuring tunnel safety by maximising water tightness with
innovative rubber waterstops
• Outlining the use of waterstops on a variety of tunnelling and
underground construction projects
• Ensuring water tightness of underwater and immersed
structures including, tunnels under rivers and canals,
basements, garages, cellars, drydocks and locks
• Evaluating construction and clamping joints
André de Graaf, Sales Manager Infrastructure, Trelleborg
Ridderkerk BV
11:30 A holistic approach assessing tunnel safety in the
design phase
• Carrying out Quantitative Risk Analysis (QRA)
• Assessing the importance of Computational Fluid
Dynamics (CFD)
• Considering behavior and perception-based Pedestrian
Evacuation Simulation (PES)
• Microscopic traffic flow simulation predicting
accidents (VISSIM)
• Cost-effectiveness analysis
Dr.-Ing. Rainer Schwarzmann, Vice President, PTV AG
12:00 Carrying out effective preventative maintenance projects to
maximise the longevity of your tunnel assets
• Considering the key issues that need to be taken care of
during the construction phase to diminish or eliminate the
need for maintenance in the near future
• Evaluating the number of water stops in an expansion joint
and the size and correct installation of the water stops
• Ensuring a continuity of concrete supply and pouring on site to
avoid cold joints and damage from heat and sunlight
• Delivering the right finished surface with the correct elevations
and no irregularities
• Selecting the right kind of expansion joints and recessing the
joints below the adjacent wearing asphalt surface
Engineer Adnan Hammid, Senior Engineer Road Maintenance
Division, Abu Dhabi Municipality
12:30 LED street and tunnel lighting in the Middle East
Veeru Veeramani, Director – Sales and Marketing, Ruud
Lighting Arabia
13:00 Networking lunch
Innovative Materials
14:10 New sprayed concrete linings for tunnels: Exploring the
benefits of highly-durable, corrosion-resistant concrete
linings which can eliminate membranes and reduce
construction costs and time
David Ball, President, The Concrete Society
14:40 Considering sustainability and durability during the
design and construction phases
• Designing tunnels and underground structures to have a 100
year life span
• Selecting the most sustainable and durable materials
• Considering the most effective concrete additives and
coverings to meet the challenges of the region’s
geotechnical conditions
Panelists will include:
Mohamad Nagi, Director of Infrastructure Sustainability and
Assessment Center, American University of Dubai
15:10 Afternoon coffee and networking break
15:40 Developing sustainable underground construction and
tunnelling projects: Exploring the re-use of excavated
natural stones
• Outlining the possibilities of re-using excavated stones to
create model sustainable developments
• Analysing the local soil type (material and water table)
• Evaluating different digging techniques and their
environmental impact
• Re-cutting and re-shaping the natural stones so that they
can be re-used
Dr. Samy Kamel, Dean of Engineering, University of the
Kingdom of Bahrain
16:10 Chairman’s closing comments
16:30 Close of main conference
www.tunnelconstructionme.com
Summit day two: Tuesday 15 March 2011
PANEL
DISCUSSION

4. Design Challenges for Cut and Cover Tunnel Projects
Presented by Eur.Ing. Javad Akhtar
Technical Director, Hyder Consulting
14 March 2011

5. AIMS OF PRESENTATION
• Recognise the circumstances that may suit Cut & Cover
Tunnelling
• Identify the key factors that will determine structural form
• Identify key design considerations and constraints, in
the Middle East Context
• Understand the effect of key design approaches on
functionality, project risk, structure durability and
maintenance.
• How to work towards an optimised Value Engineered
Solution for your particular project

6. WHY ADOPT CUT AND COVER TUNNEL SOLUTIONS?
• Already Developed Urban Areas
– High value on land usage
– Competing demands on space
– Established businesses and uses
– Cannot effect existing building frontages
• Transportation Projects
– Growing cities require additional capacity and new transport modes
– High cost of going deep – shallow preferred (up to 20m depth)
– Can accommodate wide “Right of Way” (lanes of highway, tracks of
railway) as opposed to bored tunnels
Use of Cut and Cover Tunnels is considered in the following context:
Cut & Cover Tunnel
offers minimal
“completed” impact

7. DESIGN CONSTRAINTS DUE TO URBAN LOCATION
• Maintain Previous Usages
– Need to maintain access and business frontages
– Need to support buildings
– Minimise disturbance to residents and business
• Existing Traffic
– As the new tunnel is most likely on an existing route, need to
maintain existing traffic. This may necessitate phased
construction.
• Utility Services
– Tunnel will displace existing services & may form a barrier for
future crossing services
– Need to identify and divert existing services
– Require planning for future service corridors.

8. PARTICULAR DESIGN ISSUES
• Congestion/limited space
• Construction Sequence Constraints (due to need to
maintain traffic, access, divert services etc)
• Support Constraints (support existing buildings etc)
• Poor & highly variable ground at shallow depth
• High Groundwater table
• Aggressive Groundwater (risk of sulphate and chloride
attack on concrete and reinforcement)
• Adjacent sensitive completed or ongoing developments
(sensitive to noise, vibration, groundwater lowering etc)
The Key to an Optimal Value-Engineered Solution is to ensure the right
solution applied to deal with the particular conditions and constraints of
the project/site.

9. CRITICAL FUNCTIONAL REQUIREMENTS
• Support loads from above (Dead weight and Traffic on
deck)
• Support soil pressures (laterally – on walls)
• Resist flotation uplift (due to high ground water)
• Remain water-tight
• Provide adequate means of emergency escape
• Provide adequate ventilation, in normal use and in fire
• Allow fire/explosion/incident detection mitigation and
control, (may include extinguishing)
• Be durable and maintainable
In order to understand how the site specific constraints influence the structural
form we need to understand the functional requirements of the Tunnel

10. FUNCTIONS OF PRIMARY STRUCTURAL ELEMENTS
DECK
E
X
T
W
A
L
L
E
X
T
W
A
L
L
B A S E
LATERAL SOIL
AND GROUND
WATER
PRESSURES
DEAD AND LIVE LOADS
FLOTATION UPLIFT
I
N
T
W
A
L
L
DIVISION
INTO TWIN
COMPARTMENTS FOR
ESCAPE - FOR LONG (over
200m) TUNNEL or to
REDUCE DECK SPAN
CONNECTIONS
CRITICAL
We will now breakdown the
overall functional requirements
of the Tunnel to the individual
structural elements

11. DECK TYPES AND SPAN RANGE
The main determinant of the deck type is the tunnel span
• Arched Slab
– Structurally efficient but, only applicable where space
available to accommodate the rise of the arch (say 1:6
to 1:8 rise ratio); limited application for longer spans
due to restriction on available rise.
• Solid Slab
– Most adopted, but can get very heavy for longer
spans. Accommodates corner moments well.
• Voided
– To reduce deck weight for longer span (say 12 – 20m)
• Precast Girders with Top Slab
– To reduce deck weight for longer span (say 15 - 40m )
• Insitu-cellular
– For spans 20 – 40m

12. BASE
The base serves to prop the walls apart and to add weight to resist flotation
• Solid RC Slab
– This is the basic type
• Solid RC Slab with infill concrete above
– Where there is a large weight requirement or a need to
accommodate service ducts, then lower grade “ballast
concrete” may be used to reduce the volume of
expensive structural reinforced concrete
• Piled Slab
– Piles may be used in lieu of ballast concrete
– Additionally control settlements and “anchor” the tunnel if
required for seismic resistance where there are deep
potentially liquefiable strata.
– Under-reamed piles may be effective in resisting uplift,
but additional precautions necessary where there is a risk
of cavities.
– In case of high groundwater, piles may need to be
installed from ground level & above-slab pile extension
backfilled with sand.

13. WALL TYPES AND APPLICABILITY
Two main wall types
• DIAPHRAGM WALL INCORPORATED IN
PERMANENT CONSTRUCTION
– No separate waterproofing membrane
possible
– Complex joint with deck/base, involving
couplers, box-outs and possibly bent-out bars.
– Best where space restricted,
– water penetration problems may require
additional grouting
– Wall generally thicker than if needed only for
temporary function, part of wall penetrating
below slab level is “temporary”.
• RC BOX WITH SEPARATE TEMPORARY
RETAINING WALL
– Allows incorporation of separate waterproofing
membrane
– Temporary diaphragm wall designed to lower
standard than in above case, hence whilst full
depth of wall is temporary, it may be thinner
than in above case.

14. TEMPORARY WALL TYPES AND APPLICABILITY
• Diaphragm Wall
– Best for high ground water, suitable for wide
variety of conditions
• Secant Pile
– Less sophisticated equipment required, suitable
for certain less onerous conditions
• Contiguous Bored Piles
– Only suitable where ground water is below
excavation level
• Steel Sheet Piles
– Suitable where piles can be driven into lower
ground strata
• King-post and Panel
– Would probably not be suitable in loose sands
• Jet Grouted Columns
– May be used as supplementary support to other
systems
The wall types below may be free-standing, propped or supported by
inclined rock-anchors
Less common systems (not generally applicable)

15. CONSTRUCTION SEQUENCE
• Top Down Construction
– This is where the deck slab is constructed
to prop the outer diaphragm walls, before
excavating underneath
– May allow early “return” of area above
deck to other uses or for traffic diversion
whilst construction continues beneath.
– More difficult excavation, some economy
in propping of outer walls.
– Most suitable where diaphragm walls are
incorporated in the permanent
construction
• Bottom-up Construction
– This is conventional sequence where
excavation is undertaken between outer
temporary retaining walls
– Can be adopted for both permanent or
temporary Diaphragm wall construction.

16. Centre-split sequential construction
• This is when one side of a twin-cell box has to be constructed first to allow for traffic
diversions
• Some economy if the centre wall can be incorporated into the permanent works – but special
details required for the base-slab continuity joint, unlikely to achieve full waterproofing
• Additional space required where Diaphragm Walls are not part of permanent works – such
space may not always be available or come at high cost such as major utility diversions.
WITH TEMPORARY DIAPHRAGM WALLS WITH PERMANENT DIAPHRAGM WALLS
The right choice depends on circumstances
– available space – durability approach - economics

17. COMMENTS ON FINISHES & DETAILS
• Waterproofing
– Particularly important due to highly aggressive groundwater containing sulphates and
chlorides
– May have limited life – need to consider provision for cathodic monitoring & protection
• Joints
– To accommodate settlements and thermal movements. Contraction joints typically at 9 to
12m centres, every third joint is “expansion” joint.
– Provision for re-sealing of joints through injection tubes.
– “Integral Concept” i.e. Long lengths of joint-less tunnel – may give rise to much larger
movements at ends & difficulties of sealing.
• Fire Protection To Structure
– Panels attached to deck
– Panels on framing
– Sprayed Protection
– VE Option – Provide additional concrete cover, with polymer fibre mesh to control spalling
• Crossing Services
– Shallow Tunnel cuts across transverse services routes – severe restriction in urban areas that
may restrict servicing of future developments. Need to provide for future services (a case of
adding value rather than saving cost).
• Fire & Life Safety (Escape & MEP) Systems
– Fire & Life Safety requirements in Abu Dhabi generally follow NFPA 502 requirements
– Lowest Category is tunnel under 90m, categories increase at 240m, 300m, 1000m.

18. Thank you
Any questions?

19. Why Abu Dhabi?
With a number of key large-scale tunnelling projects currently in progress and
planned, Abu Dhabi was the natural choice for this summit, particularly given
the imminent inauguration of the final phase of the flagship Al Salam Street
Tunnel. Abu Dhabi’s commitment to ensuring that it’s infrastructure is
developed to meet the demands of its burgeoning population makes this an
especially fitting location for this summit.
Dear Colleagues,
It will come as no surprise to you that as governments in the MENA region continue to invest in upgrading and developing their
countries’ infrastructure, the number of tunnelling and underground construction projects, both already in progress and planned,
is on the increase. This dramatic rise in the number of projects means that the region is coming under increasing scrutiny from
the international tunnelling community, as it becomes clear that the growth of the industry offers tremendous opportunities.
It is with this in mind that IQPC Middle East brings you the 2nd Annual Tunnels & Underground Construction Middle East
Summit. We are honoured to announce that the event is being held under the patronage of the Municipality of Abu Dhabi
City and with the official support of the International Tunnelling Association.
This event offers you a unique opportunity to examine some of the region’s key tunnelling and underground construction
projects, to learn more about how the geotechnical challenges that the region presents are being tackled and to build contacts
from across the entire industry, which will enable you to build your future business. Whether you are a client, a main
contractor, a specialist sub-contractor, a project management, design or engineering consultant, or a supplier of
critical materials to the industry, this event is not to be missed.
I look forward to welcoming you to Abu Dhabi!
Joanna Edwards
Event Director
Tunnels & Underground Construction Middle East
We would like to formally thank the Municipality of Abu Dhabi City for allowing us to host this event under their patronage
and also the International Tunnelling Association for offering the event their official support.
Over this two-day flagship event you will meet and exchange knowledge with key regional government clients, senior
representatives of leading consultants and contractors and specialist sub-contractors who are leading the way in developing the
region’s infrastructure through the construction of sustainable, durable and safe tunnelling and underground construction projects.
Thank you
Welcome
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leverages a global research base of best practices to produce an unrivalled portfolio of conferences. www.iqpc.ae

20. The 2nd Annual Tunnels & Underground Construction Middle
East Summit is the only dedicated event for tunnelling and
underground construction clients and practitioners. The event
takes place under the patronage of the Municipality of Abu
Dhabi City and is fully supported by the International Tunnelling
Association. If you value your time, this is the only tunnelling
forum that you need to attend in 2011.
A very good conference, which was well balanced with a wide
range of speakers who had good knowledge of the industry.
Gordon Torp-Petersen, Roads and Transport Authority
I enjoyed my attendance at the conference which was well
organised and had a good balance of relevant tunnelling
projects and information for delegates regarding tunnelling
and underground technology in the Gulf.
Martin Knights, International Tunnelling Association
Sponsorship & exhibition opportunities
Only at the 2nd Annual Tunnels & Underground
Construction Middle East Summit will the highest-level
decision makers attend in one place at one time. They will
evaluate products and services and will look to short-list
potential suppliers.
• Can you afford to miss out on this opportunity?
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We have a range of business development / marketing
and sales solutions that will be tailored to specifically
deliver on your business objectives. For more details,
call +971 4 364 2975 or email sponsorship@iqpc.ae
Who will you network with at the 2nd Annual Tunnels &
Underground Construction Middle East summit:
This summit will provide a unique opportunity to meet
and hear from senior regional and international experts from
governments, infrastructure and transport authorities, including:
• Municipalities
• Local and national government
• Regulatory agencies
• Main contractors
• Consultants
• Designers
• Sub-contractors
• Suppliers
Delegate profile of past Tunnels & Underground
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