How do they make sure tunnels are going exactly the right way?

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For example, when they’re digging the Euro tunnel how do they know they’re going gmthe right way and at the right depth etc.?

In: Engineering

5 Answers

Anonymous 0 Comments

They plan before they dig. If they want to dig east, they get a compass that points them east. If they want to go down, they get a level that shows them what “flat” looks like and aims down from there.

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