On the stability of landslides: A thermo-poro-elastic approach

摘要: Abstract Motion of a large rock mass down slope can either take the form catastrophic landslide, or exhibit self-stabilization, where arrests on slope, after moving only short distance. In order to study parameters that control stability sliding process, thermo-poro-elastic model is investigated both numerically and analytically. This assumes physics controlling dominated by coupling between frictional heating, thermal pressurization velocity: A temperature increase due heating causes within fluid-saturated shear zone. The pressure rise leads reduction resistance, which in turns higher velocities. Results demonstrate permeability an important factor stability: Low permeabilities lead landslides, allowing high pore develop friction be reduced. contrast, rapid arrest promoting diffusion. – velocity phase plane described, divided separatrix distinguishing arrested sliding. this minute changes dictate bifurcation dynamics landslides. sensitivity reveals various geometrical mechanical process similar manner. It hypothesized third regime observed nature, creep sliding, may generated sequence events, number events/unit time dictates apparent velocity.