Geostudio 2012 Full Top Crack 19 - [new]

Full‑depth top‑cracks (FTTCs) are surface‐opening fractures that extend from the crest to the toe of a slope or dam. Their occurrence is commonly associated with rapid drawdown, seismic loading, or sudden changes in external water levels. Because FTTCs provide a preferential pathway for water infiltration, they can trigger progressive failure through loss of shear strength and increased pore‑pressure build‑up.

| Layer | Model | Key Parameters | |-------|-------|----------------| | Sand (1 & 3) | Mohr‑Coulomb + Elastic (E = 25 MPa, ν = 0.3) | c, φ, σ_t | | Clay (2) | Modified Cam‑Clay (M = 1.2, λ = 0.12, κ = 0.04) | Initial pre‑consolidation stress = 80 kPa | | All layers | Tension‑crack (TC) | σ_t = 0.5 kPa, crack opening displacement limited to 5 mm | geostudio 2012 full top crack 19