Underground coal mine in-excavating channel wave seism fore-detection method

The invention discloses an underground coal mine in-excavating channel wave seism fore-detection method and relates to the technical field of mining roadway excavation. The method includes the steps of 1), arranging detectors on the roof, the base, the left side and the right side of a excavation roadway on the working face or arranging detectors on one side, wherein every detector is connected with a channel wave seismograph through an acquisition station and data transmission lines; 2), using the vibration of a heading machine in working on the coal wall as a point seismic origin, wherein seismic wave signals generated when a drill of the heading machine shocks coal seam and rock stratum is refracted, scattered and converted in waveform when confronting a geological body interface, and the channel wave transmitted to the rear portion of the heading machine along the coal wall of the roadway and the through channel wave are received by the detector, transmitted to the channel wave seismograph, and subjected to data processing to obtain a detection result; 3), providing real-time underground operating parameters for the excavation according to the detection result. The underground coal mine in-excavating channel wave seism fore-detection method utilizes channel wave seism fore-detection, uses the vibration of the heading machine in working on the coal wall as the point seismic origin, and performs underground state monitoring without interrupting the working.