Comparison Between Field Measured Indices of Different Stress Release Plans for High Geo-stress Soft Rock Tunnels
Bibliographic record
Abstract
Taking Maoyu Mountain Tunnel on the Lanzhou-Chongqing Railway as the object, this paper measures the surrounding rock pressure, initial support stress and other parameters in the tunnel of the pilot heading and space reservation, two popular methods for the stress release of high geo-stress soft rock tunnels. Then, the measured parameters of the two methods were compared and analyzed, aiming to select the stress release method suitable for the target tunnel. The comparative analysis shows that the maximum stress on the steel frame in initial support of pilot heading is 3.4 times that on the steel frame in initial support of space reservation, reaching the level of 340MPa. To release the stress of the said tunnel, it is recommended to reserve a large space (50cm) and add a flexible support net to deform with the surrounding rock. The flexible support net can withstand large deformation stress, thus reducing the stress on the initial support and that on the secondary lining. The research results show that the space reservation is an easy, efficient and economical way to release geo-stress before excavation.
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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".