Not sure about Superman... but probably. Classic Juggernaut would survive. Both would be a bit heavier. That's assuming the teleport effect can get past the bio & magical fields.
I can almost imagine Juggs body not giving out at all to the extra volume of the sand, and the pressure generated causing the sand to just burst out of every orifice, then he'd be OK. It's not like he has to breath. Superman might be able to get it out before he chokes.
Re: blink vs superman,juggernaut (twist)
Originally posted by carver9
If blink was in a sand desert fighingt superman and the juggernaut and superman and juggernaut looked at her but didnt consider her a threat and she teleport a ton of sand in superman and a ton of sand in juggernaut would either of them survive it.
juggy should survive