Basement water seepage is no fun!
Water from saturated ground can find it's way through just about any crack or seam in a basement's floor and foundation. Sometimes it can even soak directly through solid concrete. If rising ground water becomes trapped under the floor, it can build "Hydrostatic" pressure, resulting in cracking and heaving.
So how do you fix it?
Although there have been many different methods proposed to solve this problem over the years, the one most time tested and widely accepted solution is an Interior Drain Tile System.