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Aeromagnetic methods further enhance the Institute of Geophysical Exploration’s capacity for technological innovation.
In areas with complex topographical conditions—such as high mountains and deserts—as well as in regions with extensive forest cover, ground-based geophysical exploration often proves impractical, resulting in data gaps in many locations and thereby affecting the subsequent interpretation of data and their application in field operations. Under these circumstances, exploring detection methods and technologies suitable for complex mountainous terrain not only holds significant academic value but also addresses an urgent need for engineering exploration.
To further address these challenges and unleash the company’s innovative potential and vitality, the Geophysical Exploration Institute has actively introduced cutting-edge UAV-based electromagnetic equipment currently leading the industry, successfully applying airborne electromagnetic methods to actual projects. This not only strongly promotes the expansion of geophysical exploration technology from traditional surface and underground detection to aerial detection but also boosts the enhancement of its scientific and technological innovation capabilities.
In August of this year, during a copper mine reconnaissance project in Guazhou County, Gansu Province, the Institute of Geophysical Exploration employed the semi-airborne transient electromagnetic method for exploration. Innovatively, they utilized a combined processing technique involving apparent resistivity and chargeability to perform a quasi-three-dimensional inversion interpretation of the acquired data. This approach effectively addressed the challenge of accurately modeling and fitting the induced polarization effects caused by highly polarized ore bodies—problems that had previously plagued conventional transient electromagnetic apparent resistivity inversion methods. As a result, the team successfully achieved detection targets for copper deposits lying within 300 meters below the surface.
In Danba County, Sichuan Province—a region characterized by complex topography and frequent geological hazards—ground-based geophysical exploration methods have proven difficult to implement comprehensively. This September, the Institute of Geophysical Exploration boldly pursued technological innovation for a landslide hazard project in Danba County, primarily relying on airborne radar systems combined with high-density electrical resistivity tomography and geological surveys. As a result, they successfully identified key information such as the types and thicknesses of material deposits within the work area. This innovative approach not only addresses the challenges of near-surface exploration in rugged, hazardous mountainous terrain but also enhances operational efficiency, minimizes risks, and ensures the provision of accurate and reliable data.
Relying on existing resources and equipment, the Geophysical Exploration Institute has assembled a highly capable team to actively carry out applied research on a comprehensive set of intelligent electromagnetic exploration equipment that features multi-dimensional adaptive capabilities across air, land, and well environments. In future production and R&D efforts, the Geophysical Exploration Institute will focus on integration and synergy, achieving deep application of integrated geophysical methods—including gravity, magnetic, and radiometric techniques—in the field of airborne geophysical exploration. The Institute is committed to generating more valuable and innovative breakthroughs in the development of new geophysical technologies and methodologies, thereby making greater contributions to national resource exploration and geological hazard prevention and control.
Executive Producer | Zhang Guangda
Reviewed by | Zou Zhongping
Editor-in-charge | Zhou Huiying
Text | Wang Zhigang, Wang Anping
Figure | Project Department
Editor | Wen Han
Address: No. 39 Qinghua Road, Qingyang District, Chengdu City, Sichuan Province
Email: sczywty@163.com
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