Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 4 of 4 for “"void detection"”.
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Analysis and Application of Coal Seam Seismic Waves for detection of Abandoned Mines
… survey control. Mining into such abandoned voids poses a great safety risk to personnel, equipment, and production from inundation or toxic/explosive gas release. Often, surface or underground drilling is employed to detect the mine void and evaluate the hazards, sometimes with disastrous …
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High-Resolution Seismic Characterization of Shallow Sedimentary Structure for Freshwater Resources and Karstic Voids
… of novel methodologies for subsurface void detection. The research integrates various geophysical measurements and numerical modeling to address these multifaceted objectives. First, the field performance of two impulsive borehole seismic sources, Scorpion and Ballard, is rigorously …
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Application and Evaluation of Non-Destructive Testing Methods for Buried Pipes
… an investigation of NDT techniques for erosion void detection was conducted. A testbed consisting of two buried pipes (a reinforced concrete pipe with 1.2 m internal diameter and a corrugated steel horizontal ellipse culvert with a span of 1.6 m and a height of 1.35 m) was prepared in the West …
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Integrating Machine Learning Techniques with Measurement-While-Drilling Data for Subsurface Characterization in Open-Pit Mines
… by detecting drilling behavior indicative of voids and compromised rock mass conditions in a mine affected by historic underground workings. The second component applies a structured data preparation and analysis workflow to develop predictive models for lithology and penetration rate in a …