大定源瞬变电磁法探测采空区应用实验研究

The Application of Large Fixed Source Transient Electromagnetic Method to Detecting Coal Goaf

为了更好地研究采空区的电磁相应特征,初步进行了大定源瞬变电磁场响应规律的理论分析。选定实验场地,结合实际工作所需探测深度,对采集参数进行相关实验,在确定大地电磁干扰水平基础上对实验数据进行分析、去耦均滑,确定合理的反演道数,减小了曲线拟合误差,取得了良好效果,以便以后在实际生产中更好地应用。

In order to better study the corresponding electromagnetic characteristics of mined-out area,the author analyzes the theory of electromagnetic field response and chooses an experiment field,and based on the actual work in which the detecting depth is required,the acquisition parameters are tested.In addition,the experimental data are analyzed on the basis of determining electromagnetic interference level.The author confirms the reasonable inversion number,reduces the curve fitting error and obtains a good effect for the future work.