dwarf-fortress
Is it possible to either have a dwarf build a wall one Z level lower than he is standing or else "fill in" a ramp one Z level lower? I find that when I have a pit with a ramp leading up inside I can fill every tile in the pit but the ramp, but then can't fill the ramp (to get that OCD required completely filled in pit).
I realize I could just build a floor over the ramp, but that would result in a horrible ramp-void under the floor.
Example:
The thing about screwpumps in Dwarf Fortress, is that they can either be automatic (receiving power from a wind/watermill) or dwarf powered. Of these, only the former transfers power, as a dwarf manning a screwpump does not provide power, but rather sidesteps the power requirement entirely.
If however, you were to hook any pump in your pumpstack up to a power source with enough power for the entire stack (100 power in your case), assuming you built the pumpstack correctly, the power in the hooked-up screw pump will transfer to the adjacent screwpumps (and so forth).
Because of this behavior (it's the basis for the Dwarven Water Reactor), any pump with manual power will eject its operator if it gets enough power to operate automatically instead.
Have you seen this .GIF? It shows how to ensure the power transfers properly between levels.
Here's what you have:
If you channel that space and then rebuild the screwpump, power will flow between the connected machines and the screwpump below will no longer need to be manned (dwarfed?)
All screw pumps have two tiles -- one which the dwarves stand on to operate, and one which acts as a wall. This latter part needs to be constructed hanging over an open space to facilitate the transfer of power (as the former part must be constructed on solid ground).
Right.
Firstly you need to kill the goblins. You can't finish anything until that is done - As others have suggested marksdwarfs are the way to get this done. Even an untrained marksdwarf may hit something sometimes so make a squad and just tell them to station on the floor above. They will fire through the holes and eventually kill all the goblins.
Once they are dead, you can build your hatch and be happy in the fact the goblins are now doomed.
Personally, i'd make a ramp and have the hatch a floor higher, so they drop 2z levels into the water - the first drop will stun them, and you'll be able to fill it to 7/7 and make sure they drown without them climbing back out :)
Best Answer
No, this is not possible. As an alternative, you could try caving in a portion of natural stone/dirt, or creating obsidian from water and magma.