Research and Application of Low Altitude Aeromagnetic Method Under Complex Conditions
Hydropower stations and pumped storage power stations mostly choose deep cut canyon areas with complex terrain,which often involves hidden fault structures,causing ma-jor safety risks to the reservoir.In order to quickly,effectively and comprehensively identify hidden fault structures in such complex area,the relationship between low altitude aeromag-netism and geomagnetism is compared and summarized through the research of low altitude aeromagnetism in complex areas of middle and high mountains in this paper.It concludes that the flight height of low altitude aeromagnetism mimics the ground is within 90 m,and the measurement effect is good,which can replace the large scale ground magnetic method.After extension processing,the coincidence between geomagnetism and aeromagnetism is rel-atively high,but it is also affected by the interference anomaly,and the magnetic anomaly after extension has a certain degree of distortion.After polarizing the low altitude aeromag-netic results,further horizontal first derivative processing can clearly show the plane distri-bution characteristics of the main fault structures in the study area,and obtain good applica-tion results.Therefore,it can be promoted and applied in the preliminary survey of pumped storage power stations.
万方数据
维普
