Stability and Seepage Analysis of the Bralorne Gold Mines Tailings Dam Following a Change in Usage from Tailings Dam to Water Reservoir Dam
Bibliographic record
Abstract
The Bralorne Gold Mines Ltd. operates the historic Bralorne Pioneer Mine, near Goldbridge B.C. The tailings dam construction spanned from 2003 to late October of 2005. The mill discharged tailings for a short period subsequent to construction but since 2004, only the groundwater flowing from the mine adit has been pumped to the tailings impoundment. Some seasonal higher arsenic levels within the groundwater have prompted this action and monitoring of the seepage water leaving the dam consistently shows acceptable arsenic discharge levels. The tailings impoundment has proven very valuable in term of containment and attenuation of arsenic. However, the usage of the dam as a water reservoir versus its design as a tailings impoundment was a concern for the BC Inspector of Mines. A stability and seepage analysis of the dam in its new state was requested. This undergraduate thesis analyzes the slope stability of the dam under this new regime and provides a model for the groundwater flows. 2D Limit Equilibrium Analysis based on data obtained from old reports, site visits and monitoring equipment, confirms that the dam is performing as designed. The computer models maintain a factor of safety greater than 1.5 for static analysis and above 1.15 for various seismic loading conditions.
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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 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.001 |
| 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".