等值反磁通瞬变电磁法在铁路勘探中的应用研究

Application Research of OCTEM in Exploring Railway

在高速铁路勘察中,探明地下隐伏不良地质体的分布情况对于铁路的修建及后期运行都具有重大的安全意义.随着瞬变电磁法理论及数据处理方法的发展,仪器的轻便化等多方面进步,瞬变电磁法被越来越多地应用于高速铁路勘探工作.本文介绍了一种新型的等值反磁通瞬变电磁法,并将该方法运用在高速铁路的前期勘察工作中,取得了良好的应用效果.最后综合分析该方法在高速铁路工程上应用的2个实例,验证了该方法在高速铁路勘察中的可行性与有效性.

In investigation of high—speed railway,it is of great security significance to identify the distribution of the underground hidden bad geological bodies for the construction and the later operation of the railway.With the development of transient electromagnetic theory and data processing methods,and the portability of instruments,transient electromagnetic method is more and mole applied in high—speed railway geophysical exploration.In this paper,a new type of opposing coils transient electromagnetic method is introduced,and the method is applied to the early stage survey work of high—speed railway and has achieved good application results.Finally,according to the comprehensive analysis of two applications of the method in high-speed railway engineering,the feasibility and effectiveness of this method in high-speed railway survey are verified.