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[Impact]

So I´ve encountered a pretty big area of dampstone, made a 3x3 Main Stairway to the deepest point of of the local region, built a 20 tiles long channel where the 5 waterwheels are for power, and then about 20 z-levels of pumps to the surface, while building some kind of water fall into the next river.

looks kinda like this:

code:

lowest z-level
########################
#......................#
#....................#.#  
#....................#.#
#....................#.#
#....................#.#
#....................#.#
######################.#
  #....................#
###.####################
#XXX#
#XXX#
#XXX#
#####
lowest z-level +1
  ########################
  #.....................X#
  #.####################.#
  #.#             #....#.#
  #.##################X#.#
  #....*==*==*==*==***x..#
  #+###║##║##║##║##║##_###
  #...WWWWWWWWWWWWWWW__#
###+####################
#XXX#
#XXX#
#XXX#
#####
lowest z-level+2
                   #######
                   #....X#
                  ##.#####
                  #_xX.#
                  ##*#.#
                   #*#.#
                   ###.#
                     ###

the next z-levels are just alternating for the pumpflow.

does the dampstone somehow stop giving off water? because the water is running for a full year now and it doesnt seem to stop. its looking cool nonetheless.

[ April 05, 2008: Message edited by: Impact ]

[Jay]

The term is aquifer.  No, it will never stop.  It's one of the few sources of infinite water.

[GreyMario]

Also, learn how to use [code] tags.

[Impact]

I just noticed that, sorry.

So will it work that i let the Water just flow to the river? or does the river overflow sometime so the world will turn into the age of ark of noah?

Will i have to dig out the walls of the aquifer, and build a wall to let the water stop?

And what if i just make a channel one z-level above of the aquifer? will it then just turn into 7 deep water and dont create any new water anymore?

Is there a way to make a bottomless pit without one on the map? Still have to search if i have one on my region...

What about Magma? I have a vent, but i read that the Magma just turns into obisidian and sinks to the bottom of the vent, but does it melt into magma again after a while? If this works like that, i will just change the flow to the open magma vent, it will look like a shower.

[Mechanoid]

quote:So will it work that i let the Water just flow to the river? or does the river overflow sometime so the world will turn into the age of ark of noah?

Rivers do not over flow currently. However, any location with 7/7 water will cause any additional water to float on the top.

quote:Will i have to dig out the walls of the aquifer, and build a wall to let the water stop?

The wall will stop the water generated by the aquifer, yes.

quote:And what if i just make a channel one z-level above of the aquifer? will it then just turn into 7 deep water and dont create any new water anymore?

Aquifers will never stop producing water. Ever. As well, aquifers will only produce water on the level they are on; you must dig into the layer containing the aquifer to generate water, as digging a hole in the above layer will produce no water (since there's no aquifer there)

quote:Is there a way to make a bottomless pit without one on the map?

Sadly, no.

quote:What about Magma? I have a vent, but i read that the Magma just turns into obisidian and sinks to the bottom of the vent, but does it melt into magma again after a while?

Obsidian stone chunks (those you get from mining) will melt in magma, but obsidian stone walls themselves will not re-melt. In fact, all walls are impossible to 'melt' except for walls of ice. As well, obsidian stone walls will only cave in (ie; sink) if they are unsupported on the cardinal directions (diagonal connections do not support)

[Impact]

So if i have a pool of Magma, and water comes in contact with the magma, the magma turns into an obsidian wall? not just obsidian stone? and the wall will still sink to the bottom, until the whole vent gets blockaded?

[Haven]

I think so, though I've never tried it myself. Only made about two forts out of twenty-odd that didn't have aquifiers... I tend to play in areas with volcanoes so I can get to the bottom quickly.

I'm told you can set up a pump right next to the edge of the world, and have it pump water off the side. And if you can drain the water out faster than it comes in, you could floor/wall off the aquifier for good.

[puke]

the title of this post reminds me of a quote from peanuts, in which linus is stuck out in the cold somewhere wondering if his parents forgot him or something.  he's saying "i wonder how long you can survive sucking the juice out of a mitten?"

[grelphy]

Generally, pumping water into a magma vent will get you a capped magma vent. You'd have to get the water out into the middle of the vent to avoid this, and even then, you'd probably just end up dropping a lot of obsidian into the center of the earth and wasting magma without capping the vent.

It would be totally awesome if setting up a cap halfway down a magma vent and pumping away the rest of the magma caused pressure buildup and explosive eruptions. You could cause a cavein onto your cap to force the issue... suddenly the goblin invaders are washed away in a stupendous flood of lava!

[Impact]

Magma compared to water

Magma is a chunky liquid. As such, it acts like water in certain circumstances, but acts differently in others.
[edit] Similarities

   * Magma fills a tile and has seven possible depths.

   * Magma flows outward and downward to expand into clear space.

   * Screw pumps work in magma.

   * Floodgates and pressure platesVerify work in magma.

   * Constructed walls of all kinds safely contain magma.

   * Objects thrown into magma sink to the bottom.

[edit] Differences

   * Magma is extremely hot, and capable of melting objects and constructions made of most materials (see Magma vs. Built Objects) and thus destroying them.

   * Magma is never pressurizedVerify, it seeps out of holes slower than water and slow enough for any dwarves to outrun, unless they are the ones digging into it.

   * Magma never flows up. Its level may rise only by dripping more magma from above, and new magma may only distribute itself by moving down or to the sides, but never up.

   * Magma reacts violently with water, releasing steam and, depending on the amount of magma, leaving behind tiles of solid obsidian which can be mined, smoothed or engraved like any natural tile.

   * Magma is not a water source. Dwarves can't drink it or supply it to their wounded.

You see? Magma cant be pressurized... too bad. would have looked forwarf to build explosive traps. Well, I will have to work with a magma shower then. Do i have to build the Pump completely out of steel and and the mechanics of bauxite so those machines work?

[Derakon]

You could also use adamantite to manipulate magma, but yes, steel and bauxite are the recommend materials.

As for magma not being pressurized, I'm dubious. I've definitely lost dwarves to fast magma when I tapped into the side of a magma pipe several levels below the surface. Now, past the initial spurt, which covered probably half a dozen tiles very quickly, the magma spread pretty slowly, but that initial spurt is dangerous.

[Haven]

You can use iron in place of steel, works just as well. At any rate, I guess that answers the question of sub-surface magma forges... I'm off to build some.