High-pressure inflatable raft mat testing device and method for simulating coal seam mining

Method for simulating a high-pressure pneumatic raft Seam pad test device and method are experimental model mining engineering art. Pad portion including inflatable raft means, pressure means, pneumatic means, evacuation means; cushion inflatable raft and Oxford Oxford cloth tape to form a closed Alhambra i.e. inflatable raft raft pad by bonding pad portion, placed in a test model goaf parts, both sides of the closed pad snug raft models pillar (2); the closed end pipe (6) and the inflatable raft Oxford cloth pad (3) are bonded together, the other end of the pressure gauge (7) by sealed tracheostoma (10), pressure gauge (7) and the valve (8) is connected; valve port (9) is connected to the sealed inflator raft inflatable cushion, the pressure can be simulated seam; analog gob when the sealed tube port (10) connected to a vacuum device. The present invention solves the simulation model goaf reliability and shape stability: the analog segment to achieve the goaf, step by step, consistent with the actual mining processes.