透射槽波能量衰减系数在煤层厚度变化探测中的应用

Application of Tomography of Transmission In-seam Wave Attenuation Coefficient in Detection of Coal Seam Thickness Variation

透射槽波穿过煤厚变薄区时能量衰减明显,因此可以利用槽波能量衰减成像技术对煤层厚度变化进行探查。利用透射槽波能量衰减成像技术在内蒙古某矿对煤层厚度变化进行探测,通过分析能量衰减系数与巷道揭露煤厚相关性,得到煤层冲刷边界对应能量衰减系数值为0.12,2 m煤厚对应能量衰减系数值为0.56,并由线及面预测了煤层冲刷边界及2 m煤厚范围。经回采验证槽波解释成果与实际范围基本一致,取得较为理想的应用效果。

When transmission in-seam wave through the coal seam thickness area generate significantly energy decrement,which provide conditions of using tomography of transmission in-seam wave attenuation coefficient on the detection of coal seam thickness variation.By using tomography of transmission in-seam wave attenuation coefficient on the detection of coal seam thickness variation in a coal mine in inner mongolia,which reaserch on the correlation of actual coal thickness and energy decrement.Research results were attenuation coefficient of coal seam scouring boundary corresponds to0.12 and attenuation coefficient of 2 m coal thickness boundary corresponds to 0.56,and the scour boundary of coal seam and 2 m coal thickness range are predicted by line and plane.The interpretation results were basically consistent with the actual range,which achieve ideal application effect.