1Slide08-10-2007DGF: Malmø Citytunnel Group

Malmø Citytunnel Group

Holma. Jord ankre for start rammen for TBM’erne Anna og Katrin

v. Per B. Laursen, Rambøll

2Slide08-10-2007DGF: Malmø Citytunnel Group

Malmø Citytunnel. HolmaProject

Client: City Tunnel projektet

Contractor: MCG

Bilfinger and Berger

Per Aarsleff A/S

Pihl og Søn A/S

3Slide08-10-2007DGF: Malmø Citytunnel Group

Malmø Citytunnel. HolmaExpected conditions in overview

Groundwater level in limestone, zone 1

GT 67GM 2010001

5+300

5+360 Concrete tunnel Ramp5+722 6+105

5+400

Portal

Zone 1

Zone 2

Zon 3

Cross tunnel 13

Quaternary

Limestone

HyllieStation

5+500

+20

+30+30

+20

+10+10

+0+0

-10-10

-20-20

-30-30

-40 -40

Level, meterLevel, meter

Chainage Track 71, meter5+600 5+700 5+800 5+900 6+000 6+100

4Slide08-10-2007DGF: Malmø Citytunnel Group

Malmø Citytunnel. HolmaExcavation. Design of intake

10 m belowexcavation

+17,5

+12,7

+9,5

Pumping well

+2,2

Track 71Stat 5+400

Infiltration well

10 m inlimestone

LevelMeter

+20

+15

+10

+5

0

-5

-10

5 m screening

Well loss

Lowered groundwaterlevel

10 m inlimestone

Pumping well Sheet pile

wall

Clay till

Limestone

+17,5

8 m

+12,7

+9,5

+2,6

27,5 m

Track 74Stat 5+360

Infiltration well

LevelMeter

+20

+15

+10

+5

0

-5

-10

West

Excavation

East

5Slide08-10-2007DGF: Malmø Citytunnel Group

Malmø Citytunnel. HolmaReinfiltration and Controlperimeter

6Slide08-10-2007DGF: Malmø Citytunnel Group

Malmø Citytunnel.HolmaMCG Air photo oct. 2005

7Slide08-10-2007DGF: Malmø Citytunnel Group

Malmø Citytunnel. HolmaMCG air photo spring 2007.

8Slide08-10-2007DGF: Malmø Citytunnel Group

Malmø Citytunnel. HolmaPlacering af pumpeboringer i den dybe ende

9Slide08-10-2007DGF: Malmø Citytunnel Group

Malmø Citytunnel. HolmaMapping the zone 2B. 20 pumping wells to 45 pumping wells

+19

+20

+20

+20+21

+21

Track 74

Track 71

5+300

5+ 400

5+ 4 00

5 + 50 0

5 +5 0 0

5 + 60 0

5+ 6 00

5+700

5+700

05.TU.501805

.TU.5028

05.TU.50

22

05.TU.50

09

05.TU.50

0805

.TU.5020

05.TU.50

24

05.TV

.5005

05.TU.50

23

05.TU.50

2905

.TU.5025

05.TU

.5026

05.TU.50

0705

.TU.5021

05.TV.5

004

05.TU.50

3105

.TU.5006

05.TU

.5027

05.TU

.5030

05.TV.5

003

05.TU.50

05

05.TV

.5002

05.TU.50

04

05.TU.55

03

05.TU.55

03

05.TU.50

18

05.TU.50

01

05.TU.50

2205

.TV.500

705

.TU.5024

05.TU.50

10

05.T

U.5

029

05.T

V.50

0805

.TU

.502

505

.TU.

5011

05.T

U.5

026

05.T

V.50

0905

.TU

.503

005

.TU

.501

2

05.T

V.50

10

05.T

U.50

15

05.T

V.50

12

05.T

U.50

16

05.T

U.50

17

05.T

U.50

13

05.T

V.50

11

05.T

U.5

014

05.P

U.5103

05.TU.50

03

05.P

U.5104

05.P

U.5004

05.P

U.50

01

05.P

U.51

01

05.P

U.50

02

05.P

U.51

02

05.P

U.50

0605

.PU.50

05

05.P

U.5105

05.P

U.51

06

Groundwater level in limestone before lowering, zone 1

5+300

5+320Concrete tunnels

Chainage track 74, meter, shown for track 71

Flowlog resultsVertical section along track 71

Ramp5+683

5+400

Portal

Quaternary

Limestone

Zone 2B

Zone 2A

Zone 1

5+500

+20

+30+30

+20

+10+10

+0+0

-4,1-5

-3,5-3,7

-5,2-4,0

-10-10

-20-20

Level, meterLevel, meter

5+600 5+700

TOR

Deepest excavation levelDeepest groundwaterlowering level

Flowlog profile. The ‘box’ around the flowlogshows the interval over which the vertical flow in the well has been measured. The width of the box corresponds to the pumping yield, i.e. 100% flow.

GWL in monitoring wells 05-10-31

GWL in pumping wells 05-10-31

Holma. Longitudinal sFlowlogs. Wes

E l BLMM/JAN 2005-11-07

10Slide08-10-2007DGF: Malmø Citytunnel Group

Malmø Citytunnel. HolmaBasis and extension of system

11Slide08-10-2007DGF: Malmø Citytunnel Group

Malmø Citytunnel. HolmaPlacering af jordankre for TBM start ramme

12Slide08-10-2007DGF: Malmø Citytunnel Group

Malmø Citytunnel.HolmaResultater fra grout af vandrette jordankre

13Slide08-10-2007DGF: Malmø Citytunnel Group

Malmø Citytunnel. HolmaProblems in starting area

14Slide08-10-2007DGF: Malmø Citytunnel Group

Malmø Citytunnel. HolmaJordankre

15Slide08-10-2007DGF: Malmø Citytunnel Group

Malmø Citytunnel. HolmaEtablering af jordankre

16Slide08-10-2007DGF: Malmø Citytunnel Group

Malmø Citytunnel. HolmaOverløb fra zone 2C i forseglede ankerboringer

17Slide08-10-2007DGF: Malmø Citytunnel Group

Malmø Citytunnel. HolmaOverløb fra jordanker (Skråt). F

Foto: Jesper D. Christensen P. Aarsleff A/S

18Slide08-10-2007DGF: Malmø Citytunnel Group

Malmø Citytunnel. HolmaContrlperimeter

19Slide08-10-2007DGF: Malmø Citytunnel Group

Malmø Citytunnel. HolmaContrlperimeter