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Influence of the lifting injections at different distances to the tunnel 2D-FE calculations (deformation IuI)
-->Development of an injection concept
Step 1: Lifting at a great distance from the tunnel (Case 1, vertical ovalization)
Step 2: Lifting injections laterally and below the tunnel (case 2 and 3, horizontal ovalization)
Step 3: Repeat steps 1 and 2
--> Gradual lifting of the tunnel
With the help of the developed injection concept, the successful raising of the tunnel tube could be simulated in laboratory tests.