Supersonic Detonation in Rock Mass - Part 2: Particle Displacements and Velocity Fields for Single and Multiple Non-Delayed and Delayed Detonating Blastholes
Bibliographic record
Abstract
In Part 1 of this contribution [1] constant speed supersonic detonation of an infinitely long column charge and the resulting stress wave propagating from the blasthole were addressed and an analytical solution for the stress field was presented. This publication (Part 2) deals with the associated distributions of particle displacements and velocities using previously obtained results. The wave field in the immediate vicinity of multiple non-delayed and delayed detonating blastholes is discussed. Results show that the wave fronts decay with different decay coefficients for the P- and S-wave and these decay coefficients depend primarily on the velocity of detonation. Regions of large concentrations of stress and particle velocity could be identified in the regions adjacent to the blastholes as well as between the blastholes. These regions are indicative of material crushing and tensile failure. The wave field scenario is discussed for two, three and four delayed blastholes.
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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 | 0.001 |
| 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) | 0.001 | 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 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".