Contract Award For Repair Of Calmottunnel I Mgbahn Is Carrying Out Repair Work In The S...

Contract Award Notice

Work Detail

Contract Award For Repair Of Calmottunnel I Mgbahn Is Carrying Out Repair Work In The Single-Track Calmot Tunnel, Which Is Located In A Rack Section. The Tunnel Has Damaged Areas And Leaks, Which In Winter Lead To Ice Formation And Protrusions Into The Clearance Profile. Concrete Repairs Are Being Carried Out Locally. Projections Into The Clearance Profile Are Removed By Cutting And Secured With Fiber-Reinforced Shotcrete. At Water Entry Points, New Water Drainage Channels Are Created. For This Purpose, Radial Drainage Slots Are Milled Using Multi-Blade Milling Machines And Relief Holes Are Created Through The Vault. These Are Achieved By Inserting Half-Shells And Subsequently Sealing Them With Joint Tapes. Sealed With Rubber Profile Seals. The Resulting Water Is Drained Away Via Newly Created Drainage Channels. Existing Drainage Pipes Are Cleaned Mechanically. The Main Work In The Tunnel Will Be Carried Out From A Construction Runway That Has To Be Created In Advance.

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