Water finds it way to the lowest point because of gravity. So if we dig a mine or something same, then how we take ground water in account, so that it doesn't fill in.

  • $\begingroup$ yes mines do leak and part of how this is solved is to use pumps to get the water out of the mine,an other solution is to freeze the area where the water enters the mine to stop the flow and then pump concrete into the fractures to seal it off(freezing the rock was used during the construction of a underwater road tunell close to where i live,the oslofjord tunnel in norway it still leaks 36 metric tonns of water an hour)the same solution can be used in mines. $\endgroup$ – trond hansen Jul 25 '19 at 13:37
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    $\begingroup$ Indeed, the first steam engines were developed for pumping water out of mines: en.wikipedia.org/wiki/Newcomen_atmospheric_engine $\endgroup$ – jamesqf Jul 27 '19 at 18:02

We pump it out. Open and closed pit mines usually have pumping installations to get the water out.

Look up Mine dewatering on Wikipedia.

There have also been numerous accidents in the past where mines were flooded (YouTube: Turkey mining accident: 18 workers trapped after underground water floods mine), and when left alone many abandoned mines will fill up with (ground) water.
Sometimes these are nice diving objects.

Or (as Trond Hansen commented) we try to prevent it from coming in in the first place, by using cement, grout or bulkheads to 'plug the holes'.

If you are really interested:

Mine Water: Hydrology, Pollution, Remediation by P.L. Younger, S.A. Banwart, R.S. Hedin.

Design of Water Holding Bulkheads for CoalMines by V.S. Mutton and A.M. Rememnikov


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