Controlled perimeter blasting method for tunnel driving with advance canopy support
Why this work is in the frame
A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.
Bibliographic record
Abstract
In order to produce the better result of contour blasting for driving tunnel through soft rocks with advance canopy support,this paper investigates the reasons causing bad result on contour blasting and the method for a better contour blasting.The analysis shows that the blast holes on and next to the perimeter should be drilled outwards with a larger angle,and the blasting parameters for the perimeter holes and the holes next to the perimeter should be designed according to the requirements for smooth blasting.Furthermore,the formulae for calculating the controlled perimeter blasting are presented so that the full utilization of explosive energy can be achieved and the blasting damage in remaining rock of tunnel can be minimized.A case study demonstrates that the parameters for blast holes next to the perimeter are smaller than those for perimeter blast holes.Such results are consistent with engineering practice.It is of significance for obtaining a better result in tunnel-driving through soft rock.
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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 | 0.001 | 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