Method and device for determining impact risk grade of coal mine mining roadway

The invention provides a coal mine mining roadway impact risk grade determination method and device, and the method comprises the steps: determining a mining roadway, and determining the supporting stress corresponding to the mining roadway; according to the supporting stress, critical mining stress corresponding to the mining roadway is determined, and the critical mining stress is a critical value corresponding to stress for mining the mining roadway; the real mining stress corresponding to the mining roadway is determined, and the real mining stress is the real stress corresponding to mining of the mining roadway; according to the supporting stress, the critical mining stress and the real mining stress, the impact risk index corresponding to the mining roadway is determined, and according to the impact risk index, the impact risk grade of the mining roadway is determined, so that the problem that in the prior art, omen information of mining roadway impact accidents cannot be recognized, and the safety of m