The invention relates to the technical field of analogue
simulation, in particular to a natural caving method rock
mass spatio-temporal evolution
simulation method, which comprises the following steps of: extracting a
joint surface trend and an intersection point, screening a
closed path line, analyzing a deformation
rate difference direction, comparing a slippage direction and a contact direction to extract a dominant node, and judging that an intersection area forms an extension boundary. And integrating the
slip line segment
time sequence to generate a natural caving method rock
mass spatio-temporal evolution result. According to the method, a
closed path line is constructed through a
joint surface trend and an intersection relationship, the complete expression of a structure configuration is enhanced, a continuous change area is identified in combination with the time continuity of a deformation
rate difference direction, the dynamic tracking capability of a deformation trend is improved, and a dominant node group is extracted based on a slip and contact direction difference; and recombining and extending the boundary by using path intersection distribution, and integrating the
time sequence and the displacement direction of the slippage
line segment to construct a trajectory chain, thereby realizing fine reconstruction of the structure configuration, accurate capture of trend change and continuous expression of an evolution trajectory.