CAJ | 학술논문

弹性波阻抗反演方法摆脱了常规叠后波阻抗反演基于地震波垂直入射假设前提的局限，保留了反射波振幅随偏移距或入射角度的变化特征，考虑AVO效应，其反演结果对岩性探测更加灵敏。利用弹性波阻抗反演和常规叠后波阻抗反演的结果，构成煤体结构比例因子 P。数值模拟分析和实际资料反演结果均表明：当P≥2.5时，构造煤比较发育；P值可以作为有效判别煤体结构的参考依据用以预测构造煤发育带。
탄성파조항반연방법파탈료상규첩후파조항반연기우지진파수직입사가설전제적국한，보류료반사파진폭수편이거혹입사각도적변화특정，고필AVO효응，기반연결과대암성탐측경가령민。이용탄성파조항반연화상규첩후파조항반연적결과，구성매체결구비례인자 P。수치모의분석화실제자료반연결과균표명：당P≥2.5시，구조매비교발육；P치가이작위유효판별매체결구적삼고의거용이예측구조매발육대。
Elastic impedance inversion has been proved to be more sensitive in lithology detection than conventional wave impedance inversion mainly based on the hypothesis of seismic wave vertical incidence while AVO effect is considered when it comes to elastic inversion. This inversion method almost gets rid of the hypothesis of AI, and reserves the characteristics of seismic reflection amplitude versus offset or incident angle. The concept of coal body structure ratio P is brought up by the combination of both elastic inversion and conventional wave impedance. It is learned by both numerical analysis and actual inverted results that tectonic coal develops with high potential when P value is greater than or equal to 2.5. Studies indicate that it is effective and practical to predict tectonic coal zone with the ratio P.