摘要
槽波与其他地震波相比,能量变化十分明显,因此其衰减系数成像能够准确的判定断层等异常构造的存在。依据槽波探测构造的原理,介绍槽波振幅衰减系数层析成像的方法,并采用槽波振幅比值法,省略了对震源振幅的计算。济宁三号煤矿槽波振幅衰减系数层析成像方法的应用,成功探测出工作面内2条并未相交的断层KF78、KF79,并推断受KF79屏蔽,KF80可能并不存在或更少。实例表明槽波勘探适用于超长工作面异常构造的探测,且探测精度较高,但对于平行于工作面走向的隐伏断层分辨率相对较低。
Comparing with other seismic waves, the energy variation of in-seam wave is very noticeable, thus its attenuation coefficient imaging can determine existence of fault and other exceptional structures. On the basis of in-seam wave structural detection principles, introduced in-seam wave amplitude attenuation coefficient CT imaging method, and to use in-seam wave amplitude ratio method, the computation of source amplitude can be left out. The application of in-seam wave amplitude attenuation coefficient CT imaging in the Jining coalmine No.3, has detected 2 working face faults KF78 and KF79 without intersecting each other, and deduced that since the screening of KF79, the KF80 may not exist or lesser. The case has shown that the in-seam wave prospecting is applicable to ultra-long face exceptional structure detection with high accuracy, but the resolution of buried fault parallel to face strike relatively low.
出处
《中国煤炭地质》
2015年第9期75-78,共4页
Coal Geology of China
基金
十二五国家科技重大专项(2011ZX05040-002)
兖州煤业股份有限公司2012年科技项目"采掘工作面小构造探测技术研究"联合资助
关键词
槽波
衰减系数
断层
in-seam wave
attenuation coefficient
fault
