新桥矿-550轨道大巷修复参数确定

With the increasing of mining depth, the roof-floor lithology characterises as soft rock and the drift floor-heave will happen. The rational bolt supporting mode should be selected based on the specific conditions to regulate the roof and floor, the principle is covering all three aspects (transportation, ventilation, safety) on the basis of saving money. Selecting a optimum scheme after comparing the result of FLAC simulation. Take Xinqiao Coal Mine -550m north flank orbit drift as an illustration, this paper analysised the drift floor-heave formation mechanition and several repairing method was proposed. Then, these methods were applied to simulate with FLAC, the best one which not only supply the safety in production but also reach the best cost-saving in economic. The rock burst monitoring verified the supporting result is good based on this method, this method and the supporting technique afford the precious experience for managing drift floor-heave in mining areas.