Finne Tunnel: Innovative targeted Resealing of Segment Bore Joints – Part 2

Finnetunnel: Fugennachdichtung in Tübbingröhren/Resealing of Segment Bore Joints
Injection facility arranged directly in the joint after the failure of drilling parallel to the joint
Finnetunnel: Fugennachdichtung in Tübbingröhren/Resealing of Segment Bore Joints
Steel element with fitted sealing strip made for the workshop test
Finnetunnel: Fugennachdichtung in Tübbingröhren/Resealing of Segment Bore Joints
Segment sealing strips without compression
Finnetunnel: Fugennachdichtung in Tübbingröhren/Resealing of Segment Bore Joints
Segment sealing strips compressed to the scheduled groove basic gap
Finnetunnel: Fugennachdichtung in Tübbingröhren/Resealing of Segment Bore Joints
Drilling through the segment sealing strips with a 5 mm metal drill
Finnetunnel: Fugennachdichtung in Tübbingröhren/Resealing of Segment Bore Joints
Drill-hole created at the centre of the joint
Finnetunnel: Fugennachdichtung in Tübbingröhren/Resealing of Segment Bore Joints
Small injection pipe guided into the drill-hole
Finnetunnel: Fugennachdichtung in Tübbingröhren/Resealing of Segment Bore Joints
Sealing strip 1 with visible exit hole (circled red). The drill channel in the contact surface at the centre of the strip. The strip shown corresponds to the strip on the right in Fig. 14.
Finnetunnel: Fugennachdichtung in Tübbingröhren/Resealing of Segment Bore Joints
Sealing strip 2. The point of entry for the drill-hole above in the strip is not visible.

Finnetunnel: Fugennachdichtung in Tübbingröhren/Resealing of Segment Bore Joints
Working step 1: Drilling the segment joint
Finnetunnel: Fugennachdichtung in Tübbingröhren/Resealing of Segment Bore Joints
Working step 2: Drilling the sealing strips
Finnetunnel: Fugennachdichtung in Tübbingröhren/Resealing of Segment Bore Joints
Working step 3: Placing the injection pipe
Finnetunnel: Fugennachdichtung in Tübbingröhren/Resealing of Segment Bore Joints
Working step 4: Placing the packer and injecting
Finnetunnel: Fugennachdichtung in Tübbingröhren/Resealing of Segment Bore Joints
Working step 5: Closing the drill-hole with wood screw

Leaking joints in the tunnel lining are being resealed in an innovative manner at the Finne Tunnel in Thuringia/D. Possible resealing methods were fundamentally described and evaluated in Part 1 [4]. The resealing methods successfully applied in the Finne Tunnel are examined here in Part 2.

7 Leaks in the Segment Bores of the Finne Tunnel

The Finne Tunnel was built as part of the VDE project 8.2 “New Erfurt-Halle/Leipzig rail route” by the JV Finnetunnel, consisting of the companies Wayss & Freytag Ingenieurbau AG, Max Bögl Bauunternehmung GmbH & Co. KG and Porr Tunnelbau GmbH on behalf of the DB ProjektBau GmbH, Projektzentrum Leipzig. Its 2 parallel running tunnel bores were driven by a shield and segment lining and subsequently linked to each other by a total of 16 connecting and technical passages.

The Finne Tunnel’s segment bores were tested for tightness jointly by the JV...

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tunnel 04/2013

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tunnel 04/2013

Ressort:  Hauptbeiträge | Main Articles
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Prof. Dieter Kirschke, Beratender Ingenieur für Felsmechanik und Tunnelbau. Ettlingen/D; Dipl.-Ing. Hendrik Schälicke, Ingenieurbüro Prof. Dieter Kirschke, Ettlingen/D: Dipl.-Ing. Dirk Fraas for the Arge Finnetunnel, Max Bögl Bauunternehmung GmbH & Co. KG, Munich/D

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