煤层挠曲构造的反射槽波探测研究与实践

Research and practice of reflection in-seam wave detection in coal seam flexural structure

为了研究挠曲对槽波的反射效果以及反射槽波探测技术对煤层挠曲的探测能力,在凌志达15207工作面开展了反射槽波法探测实验。在15209回风顺槽内布置检波器并激发震源,采用反射槽波成像方法对采集到的井下地震数据进行处理,最终获得了15207工作面内挠曲的成像结果。实验结果表明,煤层挠曲可以产生反射槽波,反射槽波技术能够有效探测挠曲的位置及在工作面内的延展情况。

In order to study reflection effect of deflection in-seam wave and the detection ability of reflection in-seam wave to coal seam deflection,reflection in-seam wave detection experiment was conducted in Lingzhida 15207 working face.Detecting instrument was set in 15209 air return roadway,reflection in-seam wave imaging was used to deal with underground seam data,flexural imaging result of 15207 working face was got.The experiment result showed that coal seam deflection could generate reflected in-seam waves,the reflection in-seam wave technique enabled to effectively detect the position of deflection and the extension in the working face.