无底柱分段崩落法的一个重要特点是在复盖层下放矿。复盖层的形成方法和完善与否以及物料种类都直接影响到该采矿方法的经济效果。不形成适宜的复盖层,围岩突然崩落时的空气和动力冲击就可能造成严重事故;且不能进行有效的挤压爆破,将造成大块多,降低装运效率,不能获得低贫化、多回收的良好效果。 One of the most important features of the subsea caving method is the ore caving under the overburden. The formation and improvement of the overburden and the type of material all have a direct impact on the economic performance of the mining method. Without the formation of a suitable cover layer, the sudden impact of air and power strikes on the surrounding rock can cause serious accidents. Failure to perform effective extrusion blasting will result in large chunks, reducing shipping efficiency, failing to achieve low depletion and more Recycling good results.