Particle destruction (Worms/Wormix/Fortress M ground demolotion)

I am creating a Turn Based Strategy Game like Worms/Wormix/Fortress M,
I need to know if there is a way to make a ground destruction like in those games.
You know, like if bazooka touches the ground it makes an explosion that creates a hole.
I could do it block by block but I dont want to.
(sorry if you cant understand it. If you dont know what I meant I will show you)
Thanks for help