Magnetic tilt angle: A simple depth estimation method for underground pipelines
- Caifang Li (China University of Petroleum-Beijing, College of Information Science and Engineering) | Dejun Liu (China University of Petroleum-Beijing, College of Information Science and Engineering) | Ying Zhai (China University of Petroleum-Beijing, College of Information Science and Engineering) | Jiajia Fan (China University of Petroleum-Beijing, College of Information Science and Engineering)
- Document ID
- Society of Exploration Geophysicists
- SEG International Exposition and Annual Meeting, 15-20 September, San Antonio, Texas, USA
- Publication Date
- Document Type
- Conference Paper
- 2019. Society of Exploration Geophysicists
- Modeling, Magnetics, Interpretation
- 0 in the last 30 days
- 9 since 2007
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Underground pipeline detections before municipal constructions are of greatsignificance tothe moderni-zation of urban planning and management. The main task of underground pipeline magnetic surveysis to identify anomaliescontained within the totalmagnetic fieldandobtain estimations of the planimetric posi-tionand depthof the pipeline causing the anomalies.We applya simpleand fast method, magnetic tilt an-gle, to estimatethe spatial locationand depth of un-dergroundpipelines.Simulation results show that the 90Â° contourof the magnetic tilt angle mapdelineatesthe planimetric positionof an underground pipelinewhilst thedepth to the pipeline isthe distance between the 90Â° and the 0Â°contours.In parallel pipelinedetec-tions, the magnetic anomalies produced by the deeper pipeline are also swamped in the large anomalies pro-duced by the shallower pipeline.Further research resultsshow that the magnetic tilt angle can obtainthe accurate estimations of the planimetric positionand depth of the shallower pipeline with any ratio of the axis spacing to the total depth of parallel pipelines, but only when the ratio is greater than 1.4 can it obtain the accurateestimations of the planimetric positionand depth ofthedeeper pipeline.
Presentation Date: Monday, September 16, 2019
Session Start Time: 1:50 PM
Presentation Time: 3:05 PM
Location: Poster Station 1
Presentation Type: Poster
|File Size||533 KB||Number of Pages||5|
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