Coal mine engineering three-dimensional mining seepage analog simulation device and method

The invention relates to a coal mine engineering three-dimensional mining seepage similar simulation device and method, a geological similar body is laid in a box body, and a coal seam is made of a water-soluble material; pressure boxes and water pressure gauges are arranged in an overlying stratum and an underlying stratum of the coal seam; supplying water to the coal seam through the first water inlet pipe to simulate a coal seam mining process; injecting water into the overlying stratum through a second water inlet pipe to construct a water-bearing stratum above the coal seam; the first drainage pipe is used for draining dissolved liquid of the coal seam; the second drainage pipe is used for draining water in the overlying stratum; an acoustic emission detection probe and a wave velocity detection probe are arranged above and on the side of the geological similar body; and the monitoring control station is electrically connected with the pressure box, the water pressure gauge, the acoustic emission detecti