I regret to say - almost certainly nothing, unless you can push it down
to well below the piezometric level, with a small diameter steel pipe.
But one wild possibility - if in impermeable soil, could you add water
to well above the stone, then do a falling head permeability test as far
as the stone, and extrapolate to equilibrium?
But learn a lesson (we all make mistakes, which is forgivable, but we're
not allowed to make the same mistake twice!). Next time, cap the
standpipe appropriately, and hide it from people who like to drop stones
down pipes.
John Dunnicliff
Siavash Ghabezloo wrote:
> Hi
> What we can do if a standpipe piezometer is plugged with an external
> material such as a small piece of stone and probe can not reach the
> water level?
>
> Sincerely
> Siavash
|