用瞬变电磁数据精细处理技术探测煤矿采空区

摘要

This paper presents the principle and characteristics of transient electromagnetic longitudinal conductivity differential imaging and the processes of the software for longitudinal conductivity differential imaging to process the transient electromagnetic data. Experimental exploration was carried out in some coal mines in Henan Province. The low resistivity area was inferred and delineated, and the method was compared with the traditional method of apparent resistivity imaging. The results indicate that the software used in this stud-y has the features of faster processing speed, intuitive imaging, higher interpretation accuracy.%为方便煤田采空区瞬变电磁资料的解释,笔者根据瞬变电磁纵向电导微分成像的原理,编制了集层状模型正、反演、微分电导成像、采集数据预处理以及传统的视电阻率等方法于一体的综合瞬变电磁精细处理解释软件,并将这套软件应用于河南省老窑煤矿采空区的解释和推断工作中.结果表明:该软件处理速度快,成像直观,解释精度高.