Mining emergency broadcasting phonetic system

The invention discloses a mining emergency broadcasting phonetic system. The mining emergency broadcasting phonetic system comprises ground broadcasting main-control equipment, at least one intelligent intrinsically-safe repeater and at least one underground broadcasting substation, wherein the ground broadcasting main-control equipment is used for acquisition and control dispatching of ground broadcasting voice; the intelligent intrinsically-safe repeaters are used for communication forwarding, audio encoding and decoding, compression and uncompression between the ground broadcasting main-control equipment and the underground broadcasting substations; the underground broadcasting substations are used for being connected with broadcasting expansion telephones to achieve phonic compression, uncompression and playback; and each intelligent intrinsically-safe repeater comprises a server forwarding functional module for achieving dispatching and broadcasting expansion functions through underground handheld equipm