| 用质子磁力仪测定岩(矿)石标本磁参数时应注意的问题 |
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| 引用本文： | 李才明,李军,周拓宇.用质子磁力仪测定岩(矿)石标本磁参数时应注意的问题[J].矿物岩石,2004,24(1):105-107. |
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| 作者姓名： | 李才明 李军 周拓宇 |
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| 作者单位： | 1. 成都理工大学地球探测与信息技术省重点实验室,四川,成都,610059
2. 上海交通大学工程训练中心,上海,200240 |
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| 基金项目： | 国家"三○五"及地调项目科研课题 |
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| 摘 要： | 岩(矿)石标本磁参数测定结果的精确性直接影响磁异常反演精度,对正确推断地质结论具有特别重要的意义。在进行高精度磁测磁参数测定过程中,发现利用质子磁力仪测定岩(矿)石标本磁参数时,按过去介绍的方法测定、计算的磁化率、剩余磁化强度普遍比实际值偏大一到十几倍,在分析和确定引起误差的原因后,提出了改进的方法,即要用岩(矿)石标本所产生的磁感应强度代替其梯度进行磁参数的计算而不能用其梯度值来求磁参数。并应注意如避开探头中级化场对标本磁化的影响,用第一位置测定以减少位置不准所产生的计算误差等问题。将改进方法用于后续研究的岩(矿)石标本磁参数测定,用其结果进行磁异常反演,求得磁性体埋藏深度、产状等与实际情况相符合。
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| 关 键 词： | 磁参数 质子磁力仪 磁感应强度 磁化率 磁化强度 |
| 文章编号： | 1001-6872(2004)01-0105-03 |
| 修稿时间： | 2003年8月6日 |
THE PROBLEMS IN THE MAGNETIC PARAMETER MEASUREMENT FOR ROCK(ORE)SAMPLE WITH PROTON MAGNETOMETER |
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| LI Cai-ming,LI Jun,ZHOU Tuo-yuTechniques of Sichuan Prorince,Chengdu University of Technology,Chengdu,China, .Engineering Training Centre of Shanghai Jiaotong University,Shanghai,China.THE PROBLEMS IN THE MAGNETIC PARAMETER MEASUREMENT FOR ROCK(ORE)SAMPLE WITH PROTON MAGNETOMETER[J].Journal of Mineralogy and Petrology,2004,24(1):105-107. |
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| Authors: | LI Cai-ming LI Jun ZHOU Tuo-yuTechniques of Sichuan Prorince Chengdu University of Technology Chengdu China Engineering Training Centre of Shanghai Jiaotong University Shanghai China |
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| Institution: | LI Cai-ming~1,LI Jun~1,ZHOU Tuo-yu~2Techniques of Sichuan Prorince,Chengdu University of Technology,Chengdu610059,China, 2.Engineering Training Centre of Shanghai Jiaotong University,Shanghai200240,China |
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| Abstract: | The precision of magnetic measurement on rocks affects the interpretation of inversion of magnetic anomaly.It was found that,in scientific research work,the real magnetic parameter of rocks did not agree with the parameters measured by proton magnetometer.The reason of resulting in the difference was determined and impoved method was proposed to sovle this problem.The application of improved method to the magnetic measurement of rocks proved to be satisfactor. |
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| Keywords: | magnetic parameter proton magnetometer magnetic induction density magnetic susceptibility magnetization |
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