John Osborne : GS-SEM Civil Engineering 19 May 2009 Report on behalf of CLIC Civil Engineering and...
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Transcript of John Osborne : GS-SEM Civil Engineering 19 May 2009 Report on behalf of CLIC Civil Engineering and...
John Osborne : GS-SEM Civil Engineering19 May 2009
Report on behalf of CLIC Civil Engineering and Services (CES) WG
CTC 19 May 2009
Tunnel Cross Section Studies
John Osborne : GS-SEM Civil Engineering19 May 2009
4.5m tunnel used as baseline for 2007 costing exercise
John Osborne : GS-SEM Civil Engineering19 May 2009
• Tunnel Cross Section
– Original 4.5m internal diameter tunnel was developed by C.Wyss study in 2007 :
CLIC-Tech-Note-003
20 August 2007
John Osborne : GS-SEM Civil Engineering19 May 2009
• The tunnel diameter were initially dimensioned for the following items :– The CLIC machine, with their drive and main beam
machine components.– The 2.4 GeV and 9 GeV transfer lines for the drive
and main beams, respectively– An Installation corridor for the transportation of
machine modules for installing and/or replacement.
John Osborne : GS-SEM Civil Engineering19 May 2009
• Machine Services (1) :– Supply and return manifolds for demineralised water
cooling.– Raw water supply and return.– Drainage pipe embedded in concrete invert for any
water seepage– Compressed air for PETS on/off mechanism– Nitrogen distribution, if any– One or two 40mm duct(s) for optical fibre links– Two or three 500mm wide cable trays for dc power
cables.
John Osborne : GS-SEM Civil Engineering19 May 2009
• Machine Services (2) :– A free section of at least 70cm width by 200cm
for personnel passage between a module and the tunnel wall.
– One 500mm wide cable tray for low power and signal cables for the RF system
– One 500mm wide cable tray for beam instrumentation, survey and vacuum systems
– One 300mm wide cable tray for the power cables of the transfer lines
John Osborne : GS-SEM Civil Engineering19 May 2009
• Machine Services (3) :– One 200mm wide cable tray for the cables of the
vacuum and beam instrumention systems of the transfer lines
– The Low-Voltage (400V) distribution– 5 Cables for Medium Voltage (36KV). These cables
will bring power from Prevessin Site central Area to other sites
– Secure Low Voltage Electricity– Power for the transport vehicles– No mono-rail type transport included for the
moment
John Osborne : GS-SEM Civil Engineering19 May 2009
• Tunnel Services :
– Normal Lighting
– Leaky feeder for mobile telephones
– Public address system
John Osborne : GS-SEM Civil Engineering19 May 2009
• Safety Systems :– Panels with emergency lighting, emergency
stops, red telephones– Evacuation push-buttons (break glass type)
and sirens– Emergency radio communication for fire
brigade– Radiation monitors– Oxygen deficiency monitors?
John Osborne : GS-SEM Civil Engineering19 May 2009
• Alignment and Tunnel tolerances
– Space has been recently allocated for alignment systems
– A radial allowance for construction tolerances has been included (10cm)
John Osborne : GS-SEM Civil Engineering19 May 2009
Drive beam from Turnarounds missing
from this cross section !
John Osborne : GS-SEM Civil Engineering19 May 2009
• What has changed since 2007 :
– 3d studies with CATIA integrating services– Cooling and Ventilation studies– Transport studies– Machine developments….
John Osborne : GS-SEM Civil Engineering19 May 2009
Five machine beams in this cross section
Catia Studies
John Osborne : GS-SEM Civil Engineering19 May 2009
Extract from CLIC Technical Committee :
G. Riddone, D. Schulte, 2008.007.14
John Osborne : GS-SEM Civil Engineering19 May 2009
Drive beam
To dump
John Osborne : GS-SEM Civil Engineering19 May 2009
Main beam
BeginningOf turnaround loop
Endof turnaround loop
John Osborne : GS-SEM Civil Engineering19 May 2009
Transport Studies
John Osborne : GS-SEM Civil Engineering19 May 2009
3 cable trays 520mm
2 CV pipes 600mm
2 CV pipes 250mm
Drive beam
Drive beam
Main beam
Main beam
Safe passage
Transport train
Turnaround loop
RIGHT VIEWTYPICAL CROSS SECTION CLIC TUNNEL
Monorail
Turnaround & transport Studies
4.5m tunnel
John Osborne : GS-SEM Civil Engineering19 May 2009
Possible Ventilation Systems for road tunnels
Extracted courtesy of ‘French Tunnelling Association : AFTES : Tunnels routiers : resistance au feu Jan 2008’
John Osborne : GS-SEM Civil Engineering19 May 2009
TREATED FRESH AIRSUPPLY
90 000 m3/harea=2,2 m2
EXTRACTEDAIR
EXTRACTEDAIR
INSTALLATIONCORRIDOR
TRANSFERTLINES
CLIC
EXTRACTION AIR SUPPLY
INSTALLATIONCORRIDOR
TRANSFERTLINES
R= 2.5
Ventilation Concepts Advantages of transversal ventilation :
•Safety (see CLIC note from F.Corsanego EDMS 827669)
•Much better control of temperature & humidity gradient along the tunnel
John Osborne : GS-SEM Civil Engineering19 May 2009
6.0m diameter needed to accommodate 3m2 ducts !
John Osborne : GS-SEM Civil Engineering19 May 2009
3 cable trays 520mm
CV pipes 250 & 700mmCircuit B
Drive beam
Drive beam
Main beam
Main beam
Safe passage
Transport train
RIGHT VIEWTYPICAL CROSS SECTION CLIC TUNNEL – CV 2x1m2
Monorail
CV pipes 600 & 700mmCircuit A
Extraction 1m2
Air supply 1m2
John Osborne : GS-SEM Civil Engineering19 May 2009
COOLING AND VENTILATION IN THE TUNNEL
J. Inigo-Golfin - C. MartelCERN TS/CV
Wednesday 15th October 2008
CLIC WORKSHOP - 2008
John Osborne : GS-SEM Civil Engineering19 May 2009
Tunnel section
Circuit D : compressed air
Circuit C : Fire Fighting
Circuit A : Module cooling
Circuit B : general cooling
EXTRACTION DUCTSUPPLY DUCT
CLIC WORKSHOP - Ventilation
John Osborne : GS-SEM Civil Engineering19 May 2009
Safety considerations
SHAFTPOINT
Extraction
Air supply
Extraction
Air supply
• Control of the pressure from both ends of a sector.• Control of the pressure (overpressure or underpressure in each area).• Fire detection per sector compatible to fire fighting via water mist.
CLIC WORKSHOP - Ventilation
John Osborne : GS-SEM Civil Engineering19 May 2009
CLIC Cooling StudyProposed 1.5m diameter micro-tunnel for Cooling Pipes :
•Approx. cost for CE works 250MCHF
•Intermediate caverns would be needed for construction of micro tunnel
•Integration for cooling pipes is complicated
•Major impact on civil planning (excavated spoil through ‘completed’ structures)
J.Osborne
John Osborne : GS-SEM Civil Engineering19 May 2009
4.5m tunnelDrive beam from
Turnarounds missing from this cross
section !
John Osborne : GS-SEM Civil Engineering19 May 2009
5.0m tunnelDrive beam from
Turnarounds missing from this cross
section !
John Osborne : GS-SEM Civil Engineering19 May 2009
Herrenknect Visit June 2008
Herrenknect are one of the worlds biggest TBM manufacturers.
They advised that the most common diameter for TBM’s (metro etc) is 5.6 finished internal diameter.
John Osborne : GS-SEM Civil Engineering19 May 2009
4.5m compared to 6.0m diameter
Cross Section Studies
John Osborne : GS-SEM Civil Engineering19 May 2009
variation of tunnel diameter CLIC
7,000
8,000
9,000
10,000
11,000
12,000
13,000
14,000
15,000
3.5 4.0 4.5 5.0 5.5 6.0 6.5
diameter (m)
cost
s (€
/m)
shield-TBM in rock
without escape way
John Osborne : GS-SEM Civil Engineering19 May 2009
5.6m tunnel
John Osborne : GS-SEM Civil Engineering19 May 2009
Summary
• With a 4.5m diameter tunnel, it appears difficult to accommodate all equipment
• 5.6m recommended by CES working group• More TBM’s of this diameter available will help with Project planning• Reduction in other costs due to more additional working space ? Space for
future requests….
• Additional CE cost in the region of 150M CHF
Barcelona Metro under construction 6.6m machine external, inner 5.8m. With 0.1m tolerance on radius = 5.6m internal diameter.