摘要
为了提高磁铁矿勘探过程中矿层预测精度,解决钻孔钻进过程中终不终孔的问题,认为可以采用勘探线剖面高精度磁场观测、岩芯标本磁参数测定、磁参数与钻孔编录成果约束后的磁异常正演计算,由此来确定剩余磁异常的有无,从而推断地下有无隐伏磁铁矿矿层。笔者在预测过程中采用:①最大剩余磁化强度、磁化率;②平均剩余磁化强度、磁化率来正演,取得了一些实际效果和经验,为磁铁矿矿区开展勘探施工提出一些参考意见。
In order to improve the prediction precision through the magnetite layer, solve some drilling problem and determine whether the ore-bearing layer have it or not. This paper considers that we can use the observation of precision magnetic field on exploration line, the measured of core magnetic parameters. By magnetic parameters and drilling logging results for forward calculation, from this we can obtained surplus magnetic anomaly and determine whether the ore-bearing layer have it or not, consequently carry out prediction. The author in the prediction process with adopting ： （1）Maximum residual magnetic strength and magnetic susceptibility;（2）Average magnet- ized strength and magnetic susceptibility for Forward Modeling. These can get some actual effect, putting some Suggestions for the drill- ing problem in the magnetite core area.
出处
《物探与化探》
CAS
CSCD
2012年第4期556-558,共3页
Geophysical and Geochemical Exploration
关键词
磁铁矿
矿层预测
钻孔岩芯
磁参数
剩余磁异常
magnetic ore
ore layer forecast
drilling core
magnetic parameters
surplus magnetic anomaly
