| 钻孔岩芯磁参数测定提高磁铁矿矿层预测精度 |
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| 引用本文： | 王建飞,左琼华,陈载林.钻孔岩芯磁参数测定提高磁铁矿矿层预测精度[J].物探与化探,2012,36(4):556-558. |
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| 作者姓名： | 王建飞 左琼华 陈载林 |
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| 作者单位： | 云南国土资源职业学院地质矿产勘查系,云南 昆明,650217 |
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| 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。
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| 关 键 词： | 磁铁矿 矿层预测 钻孔岩芯 磁参数 剩余磁异常 |
THE DETERMINATION OF DRILLING CORE MAGNETIC PARAMETERS AND THE IMPROVEMENT OF THE MAGNETITE LAYER PREDICTION PRECISION |
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| WANG Jian-fei
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ZUO Qiong-hua
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CHEN Zai-lin.THE DETERMINATION OF DRILLING CORE MAGNETIC PARAMETERS AND THE IMPROVEMENT OF THE MAGNETITE LAYER PREDICTION PRECISION[J].Geophysical and Geochemical Exploration,2012,36(4):556-558. |
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| Authors: | WANG Jian-fei ZUO Qiong-hua CHEN Zai-lin |
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| Institution: | (Yunnan Vocational College of Land Resources,Department of Geology and Mineral Resources,Kunming 650217,China) |
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| Abstract: | 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:①Maximum residual magnetic strength and magnetic susceptibility;②Average magnetized strength and magnetic susceptibility for Forward Modeling.These can get some actual effect,putting some Suggestions for the drilling problem in the magnetite core area. |
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| Keywords: | magnetic ore ore layer forecast drilling core magnetic parameters surplus magnetic anomaly |
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