大透距高分辨率电磁波CT精细探测研究

Study on Fine Electromagnetic Wave CT Detection with Large-aperture and High-resolution

提高分辨率和增大探测距离一直是困扰煤矿回采工作面电磁波CT探测的关键问题。采用正则化反演算法和低频率高密度的发射采集系统,实现了高分辨率和大探测距离的电磁波精细探测目的。工程应用探测结果及验证表明,通过正则化反演算法提高分辨率对探测宽度超过250 m工作面的内部构造是可行的。该研究可为宽大工作面安全回采提供可靠资料,具有一定的应用前景。

Improving the resolution and increasing the detection range have been the key problems of electromagnetic wave CT detection in the working face. In this paper, the regularization inversion algorithm and emitting-receiving system of low frequency were adopted to realize the purpose of the fine electromagnetic wave detection with high resolution and large detection range. The detection results of engineering application and verification showed that improving the resolution by regularization inversion algorithm was feasible to detect the internal structure of the working face with the width over 250 m. The study can provide reliable data for the safe mining of the wide working face, so it has a promising application prospect.