Experimental Investigation on Mechanical Properties of Sandstone in Three Gorges Reservoir Area under Unloading Condition
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Bibliographic record
Abstract
Test results show that unloading failure is more brittle than loading failure, and rock samples suffer more damage under unloading failure, especially in high stress. Unloading failure leads to deterioration of deformation modulus, internal friction angle, and cohesion, whose values changes with the changing of stress state. Unloading stress-strain curves of sandstone samples could be divided into four stages, loading stage, unloading stage, brittle stress drop stage, ideal plastic stage, and well fitted by polynomials. There is springback deformation in the second stage, which decreases with increase of initial confining pressure. These test results could offer theory support for analysis of deformation and stability of actual projects.
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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