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Work Update | The Institute of Geophysical Exploration Visits the Geological Exploration Institute of China Railway Second Survey and Design Institute for a Symposium on Geophysical Exploration Work
On August 26, Zhang Guangda, Secretary of the Party Branch, Chairman, and General Manager of the Geophysical Exploration Institute, along with several members of the leadership team and project managers—a total of six people—visited Chengdu Geological Exploration and Geotechnical Engineering Co., Ltd. of China Railway Second Institute for an exchange and discussion meeting. Zhang Yulu, Director of the Geological Exploration Institute of China Railway Second Institute, and other relevant officials also participated in the meeting.
At the symposium, project managers from the Geophysical Exploration Institute presented reports and exchanged ideas on the application of geophysical exploration methods—including wide-field electromagnetic method, semi-airborne electromagnetic method, and audio-frequency magnetotelluric method—in tunnel exploration. They highlighted the unique advantages of the wide-field electromagnetic method in railway, highway, and tunnel exploration, particularly its ability to identify deep and large faults, concealed faults, fault fracture zones, aquifer zones, and karst-developed areas. This method can effectively suppress strong electromagnetic interference from the ground and overcome static effects and near-field effects. In recent years, the Geophysical Exploration Institute has used the wide-field electromagnetic method to complete projects totaling over 2,000 km in fields such as tunnels, geothermal resources, and oil and gas exploration. The results of these projects have provided robust technical support for various production and construction initiatives.
In response to geological and topographical conditions characterized by high plateaus, towering mountains, and dense forest cover—conditions in which conventional personnel, machinery, and equipment are unable to complete data acquisition tasks—the Institute of Geophysical Exploration has also introduced the semi-airborne electromagnetic method, which leverages powered drones fueled by oil or electricity. This method excels at acquiring, processing, analyzing, and interpreting data from depths of up to 1,000 meters. By forming a closed-loop data system for line surveys, it enables unified research and provides reliable technical services for production and construction.
For many years, the two sides have collaborated closely in geophysical exploration fields such as audio magnetotellurics and achieved fruitful results. The Geophysical Exploration Institute has consistently been an outstanding team listed by the Geological Exploration Institute of China Railway Second Institute.
The leading experts from the Geological Exploration Institute of China Railway Second Institute highly praised the exchange and briefing presented by the Geophysical Exploration Institute. They fully affirmed the effectiveness of the wide-area electromagnetic method in railway exploration, believing that the wide-area electromagnetic method has great potential for future development. In the coming work, they will continue to collaborate closely with the Geophysical Exploration Institute and the team led by Academician He Jishan, seamlessly integrating production and scientific research. They will also carry forward the spirit of hard work demonstrated by the Geophysical Exploration Institute on the Sichuan-Tibet Railway, and further deepen exchanges and strengthen cooperation in new projects to be undertaken in the future.
Executive Producer | Zhang Guangda
Reviewed by | Zou Zhongping
Editor-in-charge | Zhou Huiying
Text | Yang Yuning
Figure | Yang Yuning
Editor | Wen Han
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