Method and device for testing mechanical property of underground coal mine filling material

The invention relates to a method and a device for testing the mechanical property of an underground coal mine filling material. The detection mechanism is arranged on the working table and comprises a power assembly and a detection assembly, an extrusion roller matched with the strip type filling wall is arranged on the detection assembly, and the power assembly can drive the extrusion roller to move in the vertical direction of the space; wherein the detection assembly comprises an elastic pressure applying structure and an adjusting structure, and the adjusting structure is used for adjusting the initial value of the elastic pressure applying structure so as to change the force, acting on the strip type filling wall body, of the extrusion roller; the follow-up assembly is movably arranged on the working table, the follow-up assembly is matched with a first abutting piece fixed to the working table and used for clamping the strip-type filling wall, a movable roller is connected to the follow-up assembly and