瞬变电磁法在锶矿采空区中的应用研究

Application of Transient Electromagnetic Method in Goaf of Strontium Mine

老旧私办矿井缺乏基本的矿井资料,对新建矿井存在安全隐患,必须进行有效的探测。瞬变电磁法作为一种成熟的物探方法,被广泛地应用于工程地质调查中。本文将瞬变电磁法应用到大足天青石矿业矿区南翼无名采空区调查中,介绍了瞬变电磁法的工作原理、数据采集设备和反演处理方法。将瞬变电磁法反演结果和已知地质结果进行对比分析,结合实际现场情况验证了瞬变电磁法的探测结果。通过上述案例可以得出:高分辨瞬变电磁系统在采空区调查中具有效率高,分辨率强以及抗干扰能力强等优点,能够适应复杂的抗干扰工作环境。结合地质实际情况,基本确定了采空区的规模及平面分布情况。本次调查证实了瞬变电磁法在采空区调查中的适用性和有效性,为矿山安全生产提供了保障。

The old private mines lack basic mine data,and there are hidden dangers in the newly built mines,so effective detection must be carried out.Transient electromagnetic method,as a mature geophysical exploration method,has been widely used in engineering geological survey.In this paper,the transient electromagnetic method is applied to the investigation of the nameless goaf in the south wing of Lazuli mining area in Dazu.The working principle,data acquisition equipment and inversion processing method of transient electromagnetic method are introduced.The inversion results of transient electromagnetic method and known geological results are compared and analyzed,and the detection results of transient electromagnetic method are verified according to the actual field situation.Through the above cases,it can be concluded that the high resolution transient electromagnetic system has the advantages of high efficiency,strong resolution,and strong anti-jamming ability in the goaf survey,and can adapt to the complex anti-jamming working environment.According to the actual geological situation,the scale and plane distribution of the goaf are basically determined.This investigation confirms the applicability and effectiveness of transient electromagnetic method in goaf investigation,and provides a guarantee for mine safety production.