Modélisation numérique des mouvements de terrain meuble induits par un tunnelier
Bibliographic record
Abstract
The construction of shallow tunnels causes movements that can affect existing structures, inducing unacceptable disorders. These disorders can not only result from settlements but also from horizontal displacements. In the case of tunneling with pressurized face shield boring machines, ground movements are found to be the result of complex interactions between soil, construction stages, and shield drive parameters. In this context, the direct prediction of final ground movements by empirical, or analytical, and numerical approaches has proven to be insufficient. It is therefore necessary to develop and to validate more accurate simulation tools to allow assessment of the magnitude and distribution of soil movements in relation to construction stages. By experimental results of two sections of the Lyons D line subway extension (1993-1995), the authors examine various numerical procedures, in this paper. A two-dimensional procedure, taking into consideration various stages of construction, is proposed. The confrontation of this approach to experimental results shows the necessity of corrections due to three-dimensional effects of various tunneling stages.Key words: tunnels, shield, settlement, monitoring, grout, numerical modeling, back-analysis.
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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 | 0.001 |
| Insufficient payload (model declined to judge) | 0.002 | 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".