system
Given the following post, respond as if you're commenting on Reddit:
human
[40k] Is it possible to build a Tyranid shelter?

There's a tyranid swarm devouring planets a couple of systems over and they're probably 6 months to a year from reaching my planet.

My family owns a lot of mining operations on my planet and I was wondering if it would be possible to construct a Tyranid shelter at the bottom of one of the mines.  Money is no object to us and we could easily provision our shelter to comfortably live for a year or two down there.  

Granted there'd be nothing on the surface or even any atmosphere by the end of this, so we'll have to leave instructions for relatives off-system to find and pick us up in a year or two once the swarm fleet has passed.  Nothing would be left on our world, but at least we'd avoid the indignity of packing onto a fleeing ship without our possessions and packed in with reeking poor people.

Would Tyranids be able to detect the vibrations of our generators over 10,000 feet below the surface?

They surely don't crawl down every single well, hole, abandoned mine, and lava vent on a planet scouring for signs of life, right?
gpt
Tyranids have powerful psykers coordinating the hive mind of the entire swarm. So yes, unless the bunker is vibration-proof, smell-proof, and lined with telepathy-blocking materials, the Tyranids will know where you are.