Thanks MotorCity for your help,
I've been searching lately (for almost two weeks) for any reference that describes how drilling in concrete affects durability of the tunnel lining without any luck. If you've got any reference (book, paper, article anything) please let me know.
Thanks oldestguy for the website, and thanks MotorCity for the response, does that mean that anchors should be installed after using an instrument to know reinforcement locations first? this will take too much effort for installing fixture in a 5 kilometers tunnel, maybe there is a faster way to...
Greetings,
I've a question regarding the post-drilling and post-installation of anchorage / fixtures for utilities in TBM tunnels.
Does post-drilling for installing anchors in tunnel lining segments affects durability of the precast segments? as they reduce the concrete cover while drilling...
