Surge simulation method and system based on landslide mass motion model and meshless SPH

The invention discloses a surge simulation method and system based on a landslide mass motion model and a meshless SPH, and the method comprises the steps: calculating the slippage time of the landslide mass motion model, and the slippage speed and slippage distance at each moment, and obtaining the overwater and/or underwater motion process of a landslide mass; an SPH surge fluid particle expression and a control equation of water body movement under landslide mass impact are constructed, and a discretized SPH surge numerical calculation model is constructed; carrying out iterative solution on the SPH surge numerical calculation model to obtain physical and mechanical parameters of the water body and a propagation movement process of the water body at each moment; according to the method, the movement process of the landslide mass and the propagation movement process of the water body are subjected to image processing, the simulated evolution process of the surge of the landslide mass at each moment is obtai