岩浆岩侵入煤层范围的地震解释方法

确定岩浆岩侵入煤层的边界对煤矿安全生产十分重要。利用钻孔资料和岩浆岩的高波阻抗、高频和波形异常等地震波动力学信息，提出了岩浆岩侵入煤层的地震反演、地震相分析和谱分解等3种岩性解释方法。并运用这些方法在安徽淮北矿区某矿利用实际三维地震资料界定岩浆侵入8煤层的范围，取得了好的效果。研究认为，确定岩浆侵入煤层的范围时，当研究区域内具有较多的钻井和测井资料时(3~4个/km2)，建议使用地震反演方法；而研究区域内钻井数目较少或缺乏测井资料时，建议综合使用地震相分析和谱分解方法。 

Seismic interpretation method for the magmatic intrusion extent in coal seams

The magmatic intrusion in the coal seams brings about a great effect on coal safe production, so it is very important to locate the boundary of the magmatic intrusion in coal. In this paper, the seismic interpretation method for the magmatic intrusion in the coal is put forward, including three kinds of lithology interpretation methods, i.e. seismic inversion, seismic face analysis and spectrum decomposition. The property of the method is to utilize comprehensively drilling data and seismic dynamic information of high impedance, high frequency and waveform difference. The practical 3D seismic data in a coal mine, Huaibei, Anhui Province are interpreted with the method, and reliable geological basis is supplied for the boundary of the magmatic intrusion in coal.