RADIO COMMUNICATION SYSTEM, MINE MANAGEMENT SERVER, AND RADIO COMMUNICATION TERMINAL DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a radio communication system and a mine management server that prevent reduction in the operation rate of a mine due to radio disruption.SOLUTION: Each of a mine management server 31 for managing the operation state of a work machine 20 operating in a mine and a terminal device 26 comprises a communication control unit 261b for controlling multiplexed radio communication connection using a broadband communication line and a narrowband communication line having a narrower band than the broadband communication line. Regarding first type data for shifting the work machine 20 to next operation of data transmitted and received by radio, the communication control unit 261b outputs transmission object data to both of a first system radio communication device 121 for connecting with the broadband communication line and a second system radio communication device 122 for connecting with the narrowband communication line (S806/Yes, S807 and S808). Second type data that is used for operation of the mine but does not shift the work machine 20 to next operation is output to the first system radio communication device 121 every time, but to the second system radio communication device 122 less frequently than output to the first system radio communication device 121 (S806/No and S808).SELECTED DRAWING: Figure 8