The research is the hardest part of writing, isn't it?
I think that to make your story seem real you will need to design a world in which bioregenerative systems are in place. Bioregenerative systems are like the systems used on space ships.
I want you to take a look at this very interesting article that I found:
There are many challenges with a world like this. You will have to create a heat source that will not pollute the air or burn oxygen as they are two things that will be in short supply. Heat will be needed, though, as will light, because there is no moon.
I suggest that you hire a very good editor when you are done, particularly if you are building a world of your own so that you can be sure the story is cohesive and the facts are such that they can be believed and seen by the reader.
I happen to know a few so let me know when you are done!
I hope this has helped. Please let me know if you have more questions.
TRY THIS WEBSITE
ALSO PERHAPS THIS WEBSITE MAY HELP
. NECROPOLIS - SPECIAL EDITION... city where this story takes place is fictional Silicon City. ... They are responsible for designing and working out the ... Underground with cylindrical complex on top ...http://www.serenadawn.com/NECMANUAL.DOC