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

Abstract

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.

Description

technical field [0001] The invention relates to the technical field of coal mining roadway excavation. Background technique [0002] Roadway excavation is a high-input, high-risk underground concealed project. There is great ambiguity and uncertainty ahead of the roadway, which brings great risks to mine operations. When excavation is carried out without the information to be excavated, underground accidents and complex situations (water inrush, gas outburst, etc.) occur from time to time, and more serious ones can cause casualties, bring huge economic losses, and affect the benefits of mines . Therefore, in the excavation process, how to grasp various parameters in real time, predict the pressure in front of the roadway, and monitor the underground state without interrupting the operation plays an extremely important role and is very necessary. With the continuous increase of coal mine mining depth and mining intensity, the threat of "three highs" of high water pressure, ...

AI Technical Summary

Problems solved by technology

The existing channel wave seismic method requires explosive excitation, which involves safety issues, requires a large number of personnel and departments, and is inconvenient to coordinate; it can only be used to detect the structure inside and outside the working face, and there is no advance detection of structural anomalies in front of the roadway body detection method

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