Mining subsidence monitoring method and device for mining area

The invention discloses a mining area mining subsidence monitoring method and device, and the method comprises the steps: monitoring the two-scene image data of a research area through a D-InSAR technology, and obtaining the deformation quantity with a hole in the vertical direction; using a Knoth time function to obtain a deformation field of the sinking basin with the same time interval and the same area monitored by the D-InSAR technology, and performing subtraction on time periods corresponding to two-scene synthetic aperture radar image data to obtain deformation quantity of any point in the corresponding time period; the deformation quantity with holes in the vertical direction is filled with a deformation value calculated through a Knoth time function, and the deformation quantity of other public areas is a fusion result of the deformation quantity monitored through the D-InSAR technology and the deformation quantity predicted through the Knoth time function; the method has the advantages that the surf