Application Of Trough Wave Seismic Exploration Technology In Yangliu Coal Mine

The hidden structures such as fault,thin coal area and collapse column are the main factors affecting the safe mining of coal mines,so it is necessary to accurately identify the faults and other hidden structures in the working face.At present,in-seam seismic exploration has become an important geophysical exploration method for geological structure exploration of coal mine working face.In recent years,in-seam waves have been used to detect the geological structure in the working face in Yangliu Mine,but systematic analysis and research are still lacking.Through literature research,theoretical analysis,numerical simulation,field measurement and mining verification and comparison,this paper systematically studies the in-seam wave detection of geological structure in Yangliu Mine working face,and the main understanding is as follows:The numerical simulation results show that the frequency of in-seam wave Airy phase increases and the propagation velocity decreases in the coal seam containing faults compared with the normal coal seam,and the greater the fault drop,the more serious the propagation velocity attenuation.In Yangliu mine,the joint detection method of trough wave transmission method and reflection method was used,and 13 structural anomaly areas were finally exposed,and the detection results showed that they were faults.The inversion results show that the fault layer shows energy attenuation.The greater the drop,the greater the attenuation degree of the fault.The measured response characteristics are consistent with the numerical simulation results.After mining,it is verified that there are actually 10 structural anomaly areas,all of which are faults,and the existing faults respond under trough wave detection,which shows that trough wave seismic exploration method has strong applicability and accuracy in Yangliu mine.The detection results show that the transmission method has a significant response to the abnormal area near the roadway in Yangliu mine,while the reflection method has a significant response to the faults far away from the roadway and inclined to the inside of the working face.The combination of the two methods can achieve more accurate detection effect,and only a few anomalies belong to the detection error caused by physical anomalies.Finally,the field exploration records including normal coal seams and typical structures are selected for dispersion analysis.The dispersion results are consistent with the simulation results,which further verifies the reliability of trough wave seismic exploration results in Yangliu mine.Figure[59]Table[9]Reference[110]...