结合研究区内地质资料,建立4个谱矩法反演煤层厚度的测试模型,模型参数分别为子波频率、煤层顶底板岩性、煤层夹矸及积分区间.不同模型的反演结果表明,地震子波主频大小、煤层顶底板岩性的差异、以及煤层中夹矸的变化基本上不影响谱矩法反演煤层厚度,但不同的积分区间对谱矩法反演煤厚影响较大.以子波主频50 Hz、积分区25~50Hz对研究区内8煤层的厚度进行谱矩法反演预测,结果显示,研究区西南部煤层厚度变化较大,最大厚度达14m;中西部煤层较厚,变化较缓;西北部煤层厚度较薄,一般小于2m.对比25个钻孔数据,三维地震数据谱矩法反演的8煤层厚度,有17个钻孔相对误差小于18%.%Based on geological data from study area, four testing models of coal thickness from spectral moment inversion have been modeled. Model parameters have wavelet frequency, lithology of coal roof and floor, coal parting and integral interval respectively. The inversion results from different models have shown that the seismic wavelet master frequency range, difference in coal roof and floor li-thology and parting variation in coal seam are basically no impacts on coal thickness spectral moment inversion, but impacts from inte-gral interval are large. Taking the wavelet master frequency 50Hz, integral interval 25~50Hz carried out coal seam No. 8 thickness spectral moment inversion prediction. The result has shown that coal seams in the southwestern study area have larger variations, maxi-mum thickness can be 14m as high;in middle western part rather thick and gently varied;in northwestern part rather thin, generally less than 2m. Comparison of data from 25 boreholes has found that the thickness fractional errors of 17 boreholes are less than 18%from coal No. 83D seismic data spectral moment inversion.
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