[andrewflnr]

To be more precise, if LHC was capable of forming black holes, then they would also be regularly formed in the upper atmosphere by cosmic rays... but more likely neither of those is the case. I don't think many serious physicists actually think particle collisions create black holes.

[ISL]

Collisions of sufficient energy could potentially create tiny black holes. GP has the right idea though -- evaporation goes power-law faster the smaller the black hole.

No matter what the mechanism for protection from cosmogenic-collision black holes, if they were problematic, the Sun would have been destroyed long ago through a black-hole creation, black-hole capture, solar-collapse process with cosmic rays much higher in energy than anything humans will ever generate. So, as long as you can look outside and see the sun, you need not ever sweat the particle-collision destroys the world hypothesis, no matter whence the particles are generated.