Energy-Saving Technologies of the Coal Seams Development
Bibliographic record
Abstract
In the production cost structure of a coal, which is extracted underground, more than 30 percent is the electricity cost. This is the consumption of electricity by the main fans of mine ventilation, mining and mechanisms that are used in the construction of underground excavations.The geomechanical problem of estimating the permissible width of the safety structure (pillar) in a longwall during the mining of a horizontal laying coal seam is given and solved and taking into account the economic expediency of reused a haulage drift. The mining-geological and mining-technical conditions of coal reserves mining in the Western Donbass at the mine "Samarskaya" are considered, which is accepted as a characteristic object of research.The task was solved in a complex way on the basis of a generalization of in situ and numerical experiments on digital models using the RS2 software complex of the Canadian company Rocscience.Dependencies of a residual sectional area of the re-used excavation on the width and the constructive flexibility of the protective structure are obtained.A technological clearance between the safety structure and the roof rock negatively effects on excavation stability reducing the residual sectional area and should be minimized.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| 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 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.003 | 0.001 |
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 source (direct Gemma or distilled Codex), 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".