In-Situ Measurement of Sensible Heat Ratio and Wetness Coefficient in Coal Mine Roadways
Bibliographic record
Abstract
The sensible heat ratio and wetness coefficient of roadway are important parameters for calculating the heat exchange between the wall of surrounding rock and air flow. Firstly, the variation pattern of sensible heat factor is analysed and illustrated theoretically. The sensible heat ratio decreases with the increase of the ventilation time after the rock surface is exposed, because of the decreasing of the surface temperature of the rock. The sensible heat ration increases with the enhancement of the relative humidity of airflow and decreases with the increase of the wetness coefficient of the rock surface. Secondly, according to the theory of heat and moisture exchange between mine air flow and surrounding rock, a method for calculating sensible heat ratio and wetness coefficient of underground roadway is proposed. The in-situ measurement has been carried out at several coal mines. The results show that the sensible heat ratio of rock roadway is larger than that of coal roadway, in which rock roadway is in the range of 0.4-0.7, coal roadway is in the range of 0.1-0.4, upper and lower hills are in the range of 0.2-0.4, and coal mining face is in the range of 0.1-0.4. For roadways with a small amount of water on the floor, the wetness coefficient is between 0.06 and 0.06. For roadways with a small amount of water on the floor, the wetness coefficient is between 0.06 and 0.1.
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How this classification was reachedexpand
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 itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".