how to draw a laneway/tunnel dynamically and simulate bombed hole

hello, everyone!
I wanna to draw a laneway/tunnel dynamically and then bomb it, and i also want to simulate the bomb effect, when the bomb explode, there should be a hole and some other shatters on the laneway/tunnel.
i have realized the shatters’ effect, but i do not know how to draw the laneway/tunnel and the hole dynamically.Is there a good idea?
Any answer will be appreciated!

Could you just make a prefab of the tunnel and change the scale in x, y and z if the dimensions need to be changed? You could then instantiate this prefab anywhere. As for the texture of the tunnel, there are scripts that will tile it with regards to the scale of the object the textures are applied to.

As for the bomb, look up mesh deformation in google.

For the tunnel I would use the TubeRenderer.js, for the bombed hole look into the Unity’s procedural example project/mesh deformation.