Experimental device for surface migration law of caved discrete solids and use method of experimental device

The invention relates to a caving discrete body surface migration law experiment device, the experiment device comprises a device frame, a device plugboard, a laser ranging module and a data acquisition system, the device frame is an integral frame of the device, the device plugboard is located in the device frame and is fixed with a model frame, and the laser ranging module is connected with the device plugboard. The device frame and the device inserting plate are combined to form a box structure with the periphery closed and the upper portion not closed, the laser ranging module is carried on a sliding rail in the middle of the top face of the device frame and connected with the data collecting system, and the data collecting system connects the laser ranging module and the electronic scale to a computer and synchronously collects data of the laser ranging module and the electronic scale in real time. According to the technical scheme, the accurate surface morphology of the bulk solid can be efficiently obt