On Earth, there are two separate gates we know of:
- The 'Original' Gate of SG Command (Later recovered by Russia)
- The 'Antarctic Gate', which becomes the SG Command's gate.
We've seen Stargates survive a ton of different disasters and weird phenomena:
- Alien Ship burning up on reentry
- Direct Meteorite Hits
- A black hole
- The surface of a sun (whilst connected to said black hole)
as well as pressure of being underwater, extreme heat/cold & other wild weather effects.
So I don't buy that the explosion of a ship could destroy a gate, hence the question: what happened to the gate on Apophis' ship after the ship exploded? (I am referring to one of the two ships in the assault against Earth, Season 1-2)