Underground coal mine tunnel floor heave monitoring and alarming device

The invention discloses an underground coal mine roadway floor heave monitoring and alarming device, and relates to the technical field of floor heave monitoring and alarming devices, the underground coal mine roadway floor heave monitoring and alarming device comprises a roadway and a monitoring device, and the roadway comprises a roadway bottom plate, a roadway side plate and a roadway top plate. The magnitude of the ampere force borne by the metal bar is changed by adjusting the magnitude of the current in the circuit, so that the magnitude relation between the ampere force and the tension of the spring is adjusted, the horizontal movement direction of the metal bar is finally adjusted, and the purpose of adjusting the alarm range is achieved. The whole device can effectively monitor the floor heave of the bottom plate of the coal mine tunnel. 本发明公开了一种井工煤矿巷道底鼓监测报警装置，涉及到底鼓监测报警装置技术领域，包括巷道和监测装置，所述巷道包括巷道底板、巷道帮板和巷道顶板。本发明通过调节电路中电流大小进而改变金属棒所受安培力的大小，从而调节安培力和弹簧拉力的大小关系，达到最终调节金属棒水平运动的方向，从而达到调节警报范围的目的。整个装置整体可实现对煤矿巷道底板