It doesn't say locked is says banned. You must have broken the forum rules. The most common reason to be permanently banned like that is plagiarism. Copying someone else's work and passing it off as your own. If it wasn't that have a read through the rules and see what else you might have done.
https://bitcointalk.org/index.php?topic=703657.0is there chance to recover it?i dont do anything against the forum's guidelines infact i am not active for the last 3months and i barely make post