Research progress of seismic-while-mining detection technology in coal face: An case study in 12701 working face in Guizhou Yanjiao Coal Mine

With the development of coal mine from automatic mining to intelligent mining, coal geological support system is entering a new stage of accurate intelligent detection.In recent ten years, the technology of mine trough wave seismic exploration has achieved remarkable results in the detection of hidden disaster causing bodies such as faults, thin coal belts and collapse columns in the coal seam during the coal mining stage.However, there are still some problems in the application process of trough wave seismic detection technology: the application of explosive source is limited, the construction has a certain impact on coal mine production activities, consistent static detection can not realize the monitoring of coal and rock dynamic disasters.With the shearer as the seismic source, the mining seismic detection technology can realize the high-precision detection of static geological structure and the monitoring and early warning of mining dynamic disasters in the coal mining face, and provide data support for the geological transparency and mining intelligence of the coal mining face.This technology has gradually become the research hotspot of coal mine seismic exploration.Taking the test of mining while seismic detection technology in 12701 intelligent working face of Yanjiao coal mine in Guizhou Province as an example, the latest research progress of mining while seismic technology in acquisition system equipment, acquisition scheme, acquisition software and processing software architecture design, data processing method and processing flowchart are introduced, and the detection results are discussed and analyzed.These results show that:① According to the interference records obtained, the shearer cutting vibration is suitable as the source of the mining earthquake, which can obtain the virtual shot collection records with high signal-to-noise ratio;② the designed seismic acquisition system, observation system, acquisition and processing software architecture and seismic data processing flow are reasonable and feasible, which can meet the requirements of real-time, automatic and large amount of data③ along with the mining earthquake, it can detect the static structure and dynamic stress changes in the working face, and provide data and technical support for the dynamic geological modeling of the future working face and the monitoring and early warning of coal and rock dynamic disasters in the mining process.