If your wife doesn't intend to change her drinking behavior (as indicated by the stashes of bottles and anger) I think there's nothing you can do to help her - except to let her know that if she ever wants to stop drinking, you will support her decision. In the meantime, you will look out for the kids primarily and you will look out for yourself.
I have a child with an alcoholic ex-husband who really loves our daughter and wants to be a good father, but because of his addiction he has put her in danger and exposed her to things she should never have had to witness. Many alcoholics love their children, but that love doesn't mean they are safe to be around.