What are some options for a graduate student abandoned by Ph. D advisor?
There are two questions to answer: 


  
  If you got another project from this advisor, would you stay?
  If you got the opportunity to switch advisors, would you leave?
  


If you are willing to stick with this advisor, you should bring up your dissatisfaction—and perhaps suggest a plan of action to "migrate" to another topic. (Can you, for instance, use the methodology on a different problem where it might be more successful?)

If that isn't an option—and to be honest, I suspect it isn't—you should work as aggressively as you can to find a new advisor and a new research topic, while if possible staying under the radar. You don't want to create a situation before you have somebody firmly in your corner who's willing to support you.