基于瞬变电磁法的电磁场矿藏解释仿真技术研究

将瞬变电磁法（Transient Electromagnetic Method，TEM）应用到布敦花铜矿矿区的解释中，首先需建立电磁感应模型，对瞬变电磁场中的二次磁场频率、时间特性进行分析，通过MATLAB软件进行程序编写，得出相应的特性曲线图。然后分别计算早、晚期视电阻率和全程视电阻率，得出瞬变电磁场在矿区变化时的视电阻率参数变化，得出相应的数据结论。最后，利用MATLAB的网格化函数，对数据进行处理，模拟出瞬变电磁场在铜区时的异常场变化，完成对矿区的解释。从结果分析可以看出，利用瞬变电磁法解释的结果比利用物探资料进行矿区解释的结果更简单、更精确。这样一来，既提高了工作效率，又提高了解释的准确率。

Study on the Electromagnetic Mineral Interpretation Based on the Transient Electromagnetic Method

Budunhua Copper Mining area has good mineral vision. This paper applied transient electromagnetic method to prediction of the Budunhua Copper Mining area. First to analyze secondary magnetic of field frequency,time characteristics,through programming in MATLAB to draw the corresponding characteristics curve. And then by comparing calculation results of early and late apparent resistivity and whole apparent resistivity to get parameter variation of apparent resistivity of the transient electric magnetic field when mine area change, then draw the corresponding data conclusion. At last, use MATLAB grids function processing data and simulating the field change of transient electromagnetic field in Budunhua Copper Mining area to complete the prediction of mining area. From the analysis results, the prediction results of the transient electromagnetic method are more accurate than using geophysical data. After the improvement, not only improves the work efficiency, and also improve the accuracy of prediction.