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在磁性矿区,井中磁测已得到广泛应用.但是我们所使用的井中三分量磁测的仪器定向精度较差,使水平分量出现某些无法解释的“假异常”,特别是在垂直孔中无法整理水平分量的磁异常.因此,在以往的解释工作中,只能单独利用一条垂直分量的曲线进行解释.我们知道,磁场不仅有大小,而且有方向.单个垂直分量对磁异常反映是不全面的,它往往会丢失某些有意义的“磁异常”.为了能够全面地反映异常特征而又不出现“假异常”.目前比较可靠而又行之有效的方法是:以垂直磁异常△Z沉曲线为主,结合水平模差△H′曲线进行解释.例如,当钻孔经过磁测之后要判断井底是否还有矿体存在.此时,我们不能只利用△Z曲线的“开口”异常;而
Well-bore magnetometry has been widely used in magnetite mines, but the three-component magnetometer used in the well has poor orientation accuracy, causing some unexplained “false anomalies” in horizontal components, especially in vertical holes Therefore, in the past interpretation work, only a vertical component of the curve can be used alone to explain.We know that the magnetic field is not only the size, but also the direction of a single vertical component of the magnetic anomaly is not comprehensive , It will often lose some meaningful “magnetic anomaly.” In order to fully reflect the abnormal characteristics without “false anomaly.” The more reliable and effective method is now: the vertical magnetic anomaly △ Z Shen curve, combined with the horizontal mode △ H ’curve to explain.For example, when the borehole after magnetic measurements to determine whether there are orebodies exist at this time, we can not only use the △ Z curve of the “opening” Abnormal