Again, it sounds good behind a computer or to an engineer looking for a solution, but nature has a way of connecting itself with itself.
Waste would have to pass through the shallows of the borehole which is a risk, and then the well remains a high permeability conduit for the duration of its existence. If/when the well collapses, the infill is likely to be high permeability on a human/civilization timescale.
That’s not to mention the volume of material that would need to be placed downhole, which I would imagine is significant.
Re: duration of harmfulness, doesn’t uranium have a half life of some 10^9 years? Not an expert in nuclear chemistry, but I wouldn’t want that stuff in concentration anywhere near me, or beneath my feet, and neither does any state in the US it seems.
>>: duration of harmfulness, doesn’t uranium have a half life of some 10^9 years
Yes, and uranium in its pure form is hardly dangerous. Like, don't eat the stuff, but the same could be said about lead - you're perfectly fine holding it, just don't eat it.
Again, the more dangerous something is the shorter is its half life, stuff that has incredibly long half life is almost by definition not very dangerous. With uranium you'd worry more about the toxicity than the radioactivity.
Waste would have to pass through the shallows of the borehole which is a risk, and then the well remains a high permeability conduit for the duration of its existence. If/when the well collapses, the infill is likely to be high permeability on a human/civilization timescale.
That’s not to mention the volume of material that would need to be placed downhole, which I would imagine is significant.
Re: duration of harmfulness, doesn’t uranium have a half life of some 10^9 years? Not an expert in nuclear chemistry, but I wouldn’t want that stuff in concentration anywhere near me, or beneath my feet, and neither does any state in the US it seems.