Desiccation in dewatering and strength development of high-density hard rock tailings
Bibliographic record
Abstract
The time for a freshly deposited layer of high-density tailings to reach a given water content and the contribution of desiccation to the geotechnical behaviour of the stack are complementary pieces of information. Generic modelling analyses to predict dewatering time, first presented at the 13th International Seminar on Paste and Thickened Tailings in 2010 (Paste 2010), are compared with a laboratory simulation of multilayer deposition and select field data. The multilayer experiment supports the finding of the generic modelling predictions: the rate of dewatering decreases over time, as evaporation can be supplied by water from the underlying pre-desiccated tailings. Geotechnical behaviour is discussed using results from simple shear and vane tests on samples with different degrees of desiccation and different levels of subsequent consolidation. Desiccation appears to substantially increase strength and imparts strain hardening behaviour to tailings even after they are re-saturated and consolidated. Substantial increases in strength occur well before the shrinkage limit is reached. Finally, the relevance of shear strength development to overall stack geometry and beach angle is briefly discussed.
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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".