几种低空高精度航空磁测系统及找矿应用分析

航空磁法测量在地质矿产勘查领域有着广泛深入的应用,特别是寻找在与磁性矿物有关的金属矿床勘查中发挥着重要的作用。但是大飞机的航磁和地面人工磁测资料已难以满足矿产勘查工作的需求,为此,近几年国内迅速发展一种新型的磁法测量手段—低空高分辨磁法测量系统。这种系统以动力滑翔机、无人飞艇或无人飞机为飞行平台,集成了当前先进的磁测仪器及相关的软件技术,并多个地区开展了1∶1万高分辨率的低空磁法测量工作,取得了较好的方法运用效果,经对比分析,这种低空磁测资料可以替代传统地面磁法测量,快速而有效地开展高精度大面积的磁法测量,为矿产勘查提供一种先进的技术手段。

Several high resolution aeromagnetic systems surveyed at very low altitude and mine prospecting application analysis

Aeromagnetic survey has been widely used and deeply involved in the mineral exploration activities. Especially,it plays a very important role in exploring magnetite-related ore deposits.But large aircraft aero-magnetic survey and ground artificial magnetic survey results cannot meet the need of mineral exploration. Therefore,a new aeromagnetic system applied at very low altitude with high resolution has been developed recently.The new system uses power glider,unmanned airship or pilotless aircraft as the flight platform.It integrates advanced magnetic survey machinery and related software technology.Besides,it has implemented high resolution （scale 1∶10000）at very low altitude in many areas.The new system has reached good sur-vey results.By comparison,this new aeromagnetic system can replace the traditional ground magnetic sur-vey in large exploration areas with high resolution and efficiency.It provides an advanced technical approach for mineral exploration.