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the projects the projectsthe projects
Iceland, Isafjdur
Injection of water bearing strata during tunnel driving
Isafjdur tunnel is situatedin the North West of
Iceland.
It was developed in 1995
and has a length of 9 km.
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The geologic situation is characterised
by basalts and sedimentary rock.
During the planning period high water
ingress was expected.
the projects the projectsthe projects
Iceland, Isafjdur
Injection of water bearing strata during tunnel driving
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Problem
Water pressure not allowed cement injections in spite 30 m long
drills
Solution
First with PU injection stop the water by building a 4m zone
With cement injection secure the stability
the projects the projectsthe projects
Iceland, Isafjdur
Injection of water bearing strata during tunnel driving
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Step 1: Boring and setting of the injection
systems
Step 2: Injection of PU resin and closing
of cracks and fissures
Step 3: Drill through the resin zone and
setting of the injection system for
cement suspension
Step 4: Injection of cement suspension
Step 5: Cut cross the area supported with
injections
Step 6: see step 1
the projects the projectsthe projects
Iceland, Isafjdur
Injection of water bearing strata during tunnel driving
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CarboTech Fosroc deliveryPU system BEVEDOL BEVEDAN
Injection system including pumps and pacers
On site assistance
Result
With controlled amounts of injection chemicals secure passage
through disturbed zone was achieved
the projects the projectsthe projects
Iceland, Isafjdur
Injection of water bearing strata during tunnel driving
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the projects the projectsthe projects
Iceland, Isafjdur
Injection of water bearing strata during tunnel driving
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the projects the projectsthe projects
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Stabilising from tunnel aside
Sectional ViewSchnitt
Injection dowel withinflatable packerInjektionsnagel mitBlhpacker
TBM Vortrieb
TBM Heading
Wilkit-SchaumWilkit-foamBypass adit 1Bypass Stollen 1
Bypass adit 2Bypass Stollen 2
Wiborex Injection Rock Bolt 30/11Wiborex Injektionsbohranker 30/11
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7.0 m
WIBOREX - Injection Rock Bo lts
TBM
Geological faultwith quarry rock
WILKIT-Foam
4.0 m
7.0
Stabilising in front of the TBM
Applicable resins 2 Component Silicate resin Wilkit Foam
2 Component PU resin CarboPur WF orWFA
1 Component PU resin CarboStop W
Injected by Injection anchors or steel pipes
In the front cutable glass fibre anchors are
recommended
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Coupling Sleeve 54 x 140 mm
100 cm
Detail: WIBOREX 40/16 Injection Drill Bolt3000 mm
Tunnelface
Longitudinal section: Geological Fault Zone
Cross cut drill bit 90 mm
Injection-Drill-Bolt WIBOREX 40/16
WILKIT-Foam
Rock
STABILISING AND SEALING OF WATER WITH WILKIT FOAM
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Resin Grout Injected Zones
solid, water tight
heavy weight foam, water tight
medium weight foam, water stopping
light weight foam
SEALING EFFECT OF RESIN INJECTION SYSTEMS
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+ + + + + + + + + + + +
+ + + + + + + + + + + +
+ + + + + + + + + + + +
+ + + + + + + + + + + +
+ + + + + + + + + + +
+ + + + + + + + + + +
+ + + + + + + + + + +collapsed
area
clay
gravel,
fine/med.
sand
drill holes
FOREPOLING METHOD WITH RESIN GROUT SYSTEMS
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PIN LING TUNNEL - Virtual View
Pilot Tunnel
Location
of TBM
drillholes
injected zone
collapsed zone
bypass
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PIN LING TUNNEL - Consolidation / Sealing of Shear Zone
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PIN LING TUNNEL - Consolidation / Sealing around Cave Area
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PIN LING TUNNEL - Cavities
TBM
Filling of collapsed
zone
with cement or
polyurethane
in texti le bags
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TBM
MAIN TUNNEL - WEST
FillerZone in front of TBM
sealed andconsolidated with
Bevedol/Bevedan
InjectionholesSteel- Arch
Support
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Anwendungsbeispiele / ApplicationRock Consolidation and sealing off water inflowusing WILKIT-Foam
Bypass adit 2Bypass Stollen 2
TBM-HeadingTBM Vortrieb
Bypass adit 1Bypass Stollen 1
WILKIT-Schaum Injektionen ber Blhpackerund Injektionsngel und Wiborex Injektionsbohranker
WILKIT-Foam Injection usinginflatable packer and injection dowelsand Wiborex injection rock bolts
Ground planGrundri
Geological FaultGeologische Strung
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Anwendungsbeispiele / ApplicationRock /Ground Consolidation and sealingoff water inflow using WILKIT-Foam and WIBOREX
Coupling Sleeve 54 x 140 mm
100 cm
Detail: WIBOREX 40/16 Injection Drill Bolt
3000 mm
Tunnelface
Longitudinal section: Geological Fault Zone
Cross cut drill bit 90 mm
Injection-Drill-Bolt WIBOREX 40/16
WILKIT-Foam
Rock
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Working Example WILKIT-FoamStabilization of fractured Rock
Foil 20
Raku 04 2000
Section View
Longitudinal View
Injektionsbohranker WIBOREX 30/11
WILKIT FoamConsolidated Area
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Section View
Working Example WILKIT-FoamStabilization of fractured Rock
Foil 21
Raku 04 2000
WIBOREX 30/11Injection Drill Bolt
WikitFoam
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Longitudinal View
WIBOREX 30/11Injection Drill Boltl = 6.000 mm
Working Example WILKIT-FoamStabilization of fractured Rock
Foil 22
Raku 04 2000
Wilkit Foam
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