| 瞬变电磁法圆形线圈自感计算 |
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| 引用本文： | 武中华,李文尧,简燕.瞬变电磁法圆形线圈自感计算[J].物探化探计算技术,2011,33(6):596-600,572. |
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| 作者姓名： | 武中华 李文尧 简燕 |
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| 作者单位： | 昆明理工大学 国土资源工程学院,云南昆明,650093 |
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| 摘 要： | 在瞬变电磁法（TEM）中,圆形回线的自感参数用于局部导体晚期瞬变电磁场的等效计算、接收线圈固有过渡过程计算、关断时间的计算以及瞬变电磁仪器研制等。目前,在瞬变电磁法教科书中,圆形线圈自感计算均使用近似公式。这里根据毕奥-萨伐尔定律推导出单匝圆形线圈磁感应强度及自感的积分表达式,利用MATLAB软件进行数值计算。结果表明,目前使用的自感近似公式,在用于计算半径为0.5 m和1 m的圆形接收回线自感时,误差分别为-18.978%和-26.542%。用于计算发射回线的自感时,当回线半径从2.821 0 m～112.837 9 m时,自感近似公式的误差从-35.84%～-55.65%,且单匝正方形回线与等面积单匝圆形回线的自感值之间存在5.12%～8.11%的偏差。
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| 关 键 词： | 瞬变电磁法 圆形线圈 磁感应强度 自感 等效计算 |
SELF-INDUCTANCE CALCULATION OF CIRCULAR LOOP IN TRANSIENT ELECTROMAGNETIC METHODS |
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| WU Zhong-hua,LI Wen-yao,JIAN Yan..SELF-INDUCTANCE CALCULATION OF CIRCULAR LOOP IN TRANSIENT ELECTROMAGNETIC METHODS[J].Computing Techniques For Geophysical and Geochemical Exploration,2011,33(6):596-600,572. |
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| Authors: | WU Zhong-hua LI Wen-yao JIAN Yan |
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| Institution: | WU Zhong-hua,LI Wen-yao,JIAN Yan(Faculty of Land and Resources Engineering,Kunming University of Science and Technology,Kunming 650093,China). |
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| Abstract: | In Transient electromagnetic methods(TEM),the self-inductance coefficient of circular loop has been applied to the equivalent method calculation of transient electromagnetic field late induced by partial conductive ore bodies,the calculation of natural transient process for receiving coil,the turn-off time calculation and the developing of TEM instruments.But there are several approximate formulas in current TEM textbooks.This paper has deduced the integral formula of the magnetic induction density and the ... |
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| Keywords: | transient electromagnetic(TEM) circular loop magnetic induction density self-inductance formula equivalent calculation |
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