The invention belongs to the technical field of surface
subsidence detection, and specifically relates to a thick loose
bed mining rock stratum movement and surface
subsidence detection device. The device comprises a
subsidence detection unit and a detection
observation unit; the subsidence detection unit is arranged according to a
coal mine
measurement design manual; the bottom end of a tapered
pile core penetrates through a sealing
lantern ring and is located at the bottom end of a hollow fixed
pile, and the top end of the tapered
pile core is connected with a rubber
buoy; a water guide cavity is formed on the side wall of a sliding cavity, and the water guide cavity is located between the rubber
buoy and the sealing
lantern ring; and a transparent baffle uniformly divides a glass detection water tank into a plurality of
water storage cavities, and the bottom ends of the plurality of
water storage cavities respectively communicate with water guide cavities formed on a plurality of hollow fixed piles through a water guide
pipe. Through the arrangement of the subsidence detection unit and the detection
observation unit, whether a rock layer in a
coal mining area collapses or movescan be detected accurately in real time, so that the inspection personnel can carry out safety protection on the rock layer in the
coal mine area in a targeted manner.