【摘要】 煤炭企业对地质安全保障的期望越来越高,特别是对查清煤层赋存形态、构造、煤层厚度、煤层顶底板条件、岩浆岩侵蚀范围等方面的要求已远超规范。以岩心、测井为约束条件的波阻抗反演,可有效提高目标地质体的预测精度。Jason反演所导出的结果是一宽频带的反射系数序列和宽频带的波阻抗数据,同时加入了低频分量,使反演结果能正确地反映地层变化规律。实例表明,在波阻抗剖面上,不仅可以预测出煤层厚度的变化趋势,而且可以反映煤层夹矸及围岩的变化规律及煤层受岩浆岩侵蚀的范围。更多还原

【Abstract】 The expectations of geological security safeguards from coal enterprises are getting higher and higher,especially in aspects of identifying coal seam hosting pattern,structure,coal thickness,coal roof and floor conditions,magmatic intrusion range etc.are far beyond prospecting specification requirements.The wave impedance inversion taking the coal and rock cores,well logging as the constrained conditions can improve target geologic body prediction accuracy.The Jason inversion derived results have wide-band reflection coefficient sequence and wide-band wave impedance data,together with low-frequency constituents,thus the results can reflect strata variation pattern exactly.Examples demonstrated that,on the wave impedance section,not only can predict coal thickness variation trend,but also can reflect coal seam gangue,surrounding rock variation pattern and the range of magmatic intrusion into coal seam.更多还原