高精度磁测资料的三维反演及找煤地质意义

来源期刊：中南大学学报(自然科学版)1998年第4期

论文作者：朱自强 何继善 张新兵

文章页码：1 - 4

关键词：煤;火成岩;高精度磁测;拟神经网络;三维反演

Key words：coal; volcanic rock; high-precision magnetic method; pseudo-neural network; 3-dimension inversion

摘    要：采用精细的正演和拟神经网络反演技术对邯郸矿区北李庄井田的高磁资料进行正演、反演研究和资料分析．针对本地区磁场的特点，用先进的位场正演和分离技术将本区上、下层火成岩的磁场进行了分离．在此基础上对下层火成岩磁场进行三维反演，确定了下层火成岩的底界埋深及厚度，并据此提供了进一步找煤的勘探孔位．在其他物探方法难以取得找煤效果的情况下，该方法保证了高精度磁测工作在本区的有效性．

Abstract: By using the pseudo artificial neural network inversion technique, high precision magnetic data of Handan coal field in Hebei Province of China are processed. According to the characteristics of the magnetic field in this area, the magnetic fields of the upper layer volcanic rock and the low layer volcanic rock are separated by using advanced potential field separation technique; then, the lower layer volcanic rock′s depth and thickness are inverted by using 3-dimension models. We provide a confirmation hole, and the drilling result is identical with the inversion result. In that case other geophysical survey methods are very difficult to get a good coal survey result, but the high-precision magnetic prospection and the pseudo-artifi-cial neural network inversion technique are effective in this area.