Impact of underground metro running beneath residential building?

Hello there! I stay in an condominium complicated (about 9 buildings) in Romania. They’re constructing an underground metro system that can run nearly immediately beneath the buildings. We had been simply contacted by a agency to ask if they will set up sensors to verify if the buildings transfer throughout digging. The hill the complicated is constructed on was already consolidated in preparation for constructing a hospital on the plot of land to the left. What can be brief/long run affect of a metro automotive operating continuous beneath? Are there any critical dangers ? Thanks! Sorry if that is the fallacious place to ask, the venture documentation isn’t dumb folks pleasant.