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Parameters obtained in the experiments
| Parameter | Exp_01 | Exp_02 | Exp_03 |
|---|---|---|---|
| Slope angle ψ (°) | 0 | 37 | 0 |
| Mean slab density ρ (kg m−3) | 279 | 255 | 159 |
| Slab thickness D (cm) | 70 | 75 | 26 |
| Weak layer thickness Dwl (cm) | 7.5 | 15 | 1 |
| PST outcome | END | END | SF |
| Critical crack length ac (cm) | 39 | 32 | 26.5 |
| Position of slab fracture xSF (cm) | — | — | 36 |
| Frames per second | 120 | 120 | 120 |
END: full propagation in the weak layer, SF: partial propagation with slab fracture
