Side slope movement process analysis pretreatment method based on particle flow

The invention discloses a side slope motion process analysis pretreatment method based on particle flow, which comprises the following steps of (1) constructing a rectangular area in PFC2D software, generating particles in the area, and endowing the particles with attribute parameters; (2) according to the size of the regular side slope to be constructed and the slope surface requirement, definingan excavation sequence by utilizing a PFC2D built-in fish function, and performing layered excavation on the rectangular area to generate a side slope model meeting the condition; and (3) specifyinga pre-analyzed target area in the slope model, and performing grouping marking on the whole or part of the target area by using a fish function. In the prior art, modeling is carried out by importinga regular slope model; and according to the method, the regular slope model can be quickly built in the PFC2D through self-compiled fish function numerical modeling; and the whole slope body area or the appointed area can be marked through self-compiled fish, so that the actual problem can be solved through a particle flow numerical method, and a certain reference value is provided for slope engineering application.