Key Technologies for Dynamic Imaging of Disaster-Causing Concealed Water Bodies in Underground Coalmines Based on Transient Electromagnetic Method
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Bibliographic record
Abstract
The concealed water bodies are potential sources of disasters in underground coalmines. However, it is difficult to detect these water bodies in an accurate manner. To overcome the difficulty, this paper designs a high-power imaging system for transient electromagnetic method (TEM) in coalmines. Specifically, the shutdown period of emission current was reduced to 12s with high-current reverse clamp inductance technology; the secondary field signals were collected and the background noise was reduced to 1V through equivalent sampling, segmented amplification, and superimposed denoising; the least squares imaging and attitude angle was fused for the first time to realize the rapid imaging of the disaster-causing concealed water bodies in front of the heading face in underground coalmines. The proposed system was applied to detect and continuously track the water-rich worked-out sections on the same layer and on the roof, as well as the water in collapse columns in the excavation direction and in the heading face. The results show that our system can accurately detect 74.1% of disaster-causing concealed water bodies. This research provides new insights into the prevention and control of water disasters in underground coalmines.
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Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it