This paper focuses on the theoretical and experimental research of the integrated navigation of coalmine robots in unknown environments. Trough the study of the structure of the coalmine environment, this paper concludes of the 21 classical models of the work conditions of robots in coal mine. Since the discrepancy between the general size of the coalmine system and the environment around the robot is huge, the environment model for coalmine robots is set up based on the method of integrated modeling with u...