吊舱式直升机频率域电磁系统 在北京密云红光铁矿的勘查效果

新引进的IMPULSE吊舱式直升机频率域电磁、磁综合系统是新型的数字化宽带系统,通过分析该系统在北京密云红光铁矿进行的试验勘查结果,其中包括电磁、磁场的剖面和平面特征,以及其转换的视电阻率和电阻率深度断面特征,并与以往Tridem固定翼电磁系统所测量的结果进行对比,证实了IMPULSE系统比Tridem系统具有较好的分辨率和较大的勘探深度,在矿产和水文勘查中具有显著的勘查效果。

THE EXPLORATION EFFICIENCY OF THE HELICOPTER FREQUENCY DOMAIN ELECTROMAGNETIC SYSTEM WITH TOWED BIRD IN THE HONGGUANG IRON DEPOSIT, MIYUN COUNTY, BEIJING

The IMPULSE helicopter frequency electromagnetic system imported from Canada is a new type digital and broad band system. This paper has analyzed the exploration efficiency of the IMPULSE system in the Hongguang iron deposit, including profile and plan characteristics of the electromagnetic and magnetic field, the transformed apparent resistivity and the apparent resistivity depth section. The surveying result between the IMPULSE system and the Tridem fixed plane EM system was also compared. It is shown that the IMPULSE system has higher penetration and resolving power than the Tradem system, and that the IMPULSE system will surely show good exploration efficiency in further mineral and groundwater exploration in China.