井中磁测钻孔底部异常特征快速分析

摘要

分析钻孔底部磁性异常体的不同产状、不同方向的磁异常场垂直分量及水平分量的空间分布特征,对磁异常进行解释,能有效地判断孔底磁性体的赋存情况,估算磁性体埋深.本文对不同产状(水平、向北缓倾、向南缓倾、向北陡倾和向南陡倾板状体等)磁性体(模板)产生的孔钻孔内底部磁异常特征归纳分析,总结井中磁测钻孔底部异常规律,为异常的解释及寻找深部磁性矿体提供参考.并将这一方法对泥河铁矿ZK0301孔实测曲线进行了分析.%The bottom of the borehole magnetic anomaly analysis of different shape,different direction of magnetic anomalies in the vertical component and the horizontal component of the spatial distribution characteristics of magnetic anomaly interpretation,can effectively judge the hole body occurrence,the magnetic body to estimate the depth of magnetic body.In this paper,the characteristics of magnetic anomalies at the bottom of the borehole generated by the magnetic bodies (templates) of different occurrences (horizontal,northward dipping,southward dipping,northward dipping,and steeply dipping plates) are analyzed.This paper summarizes the anomaly law of borehole bottom in borehole magnetic survey,and provides reference for abnormal interpretation and prospecting for deep magnetic ore bodies.The method is used to analyze the ZK0301 curve of Mud River iron mine.