The present application belongs to the technical field of numerical
simulation and
geotechnical engineering, and provides a water-soil coupled single-layer two-phase SPH
simulation method, device, equipment and medium, wherein the method comprises: discretizing a calculation domain of a single-layer two-phase SPH
particle model, giving physical parameters and establishing a neighbor
list of particles; adopting
Verlet integration to perform twice semi-step updating and once full-step updating; adopting a low-dissipation Riemann
solver-based dissipation strategy to process the interaction between particles; according to the updating result, adopting a Drucker-Prager model and a return
mapping algorithm to update stress and strain, to obtain an updated
stress field; performing
diffusion smoothing processing on the updated
stress field, to obtain a single-layer two-phase SPH
simulation result. The present application has the beneficial effect of realizing efficient, stable and accurate simulation of
large deformation processes of geological disasters such as landslides and debris flows under water-soil
coupling conditions.