We don't have synonyms for explorational yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are exploration, explorations and exploitational.
(n) :
the act of exploring, penetrating, or ranging over for purposes of discovery, especially of geographical discovery; examination; as, the exploration of unknown countries; physical examination
(n) :
the act of exploring, penetrating, or ranging over for purposes of discovery, especially of geographical discovery; examination; as, the exploration of unknown countries; physical examination