That lava already has to break through literal kilometres of rock to get there. A few hundred (let’s be generous) extra meters of pourable rock ain’t gonna do shit.
I think this could actually be someone impersonating a famous mountain on Twitter, however, the account is verified with a Blue Checkmark, so this must be the real Mt. St. Helens then.
It's concrete, not cement. Cement does fuck all without water, aggregate and sand. Don't forget your tensile strength in rebar. It's like calling ketchup tomatoes.
Even still best case scenario would be like a pimple popping internally. There's still something going on below the surface that is not good.
But there would not be that best case scenario with a volcano. It's gonna blow if it wants to blow. Bonus: flying shards of concrete to compound the death and disaster all around.
I remember reading an article discussing the difficulties of re-directing a lava flow. One thing they mentioned was they tried dropping concrete blocks into or in front of the flow, and the concrete just floated on the lava.
Does remind me of my ongoing question of why we aren't using volcanoes as generators for geothermal power.
Apparently it can be implemented in a way that deliberately draws heat away from the source that's being used for the power, so why not just stick cooling rods into volcanos and then get free electricity courtesy of the earth being a hot pocket?