以提高采矿强度和效率为目的而采用内燃无轨装运设备并相应增大放矿参数(高度、步距、进路间距)的高端壁放矿区段崩落采矿法已于1975年起在河北铜矿2~#矿体进行工业试验。试验证明:这种采矿方案是无底柱分段崩落采矿法的进一步发展,为广泛采用内燃无轨铲运机和充分发挥其工作效率创造了一定条件,在采矿强度和效率等方面均取得了明显效果。在大大增加了端壁高度的生产条件下,要求了解其放矿时矿岩的基本流动规律——放出体的发育过程及其形态和大小,以便确定合理的放矿结构参数,从而为改善贫化损失指标打下必要的基础。 In order to improve mining intensity and efficiency for the purpose of using the internal combustion trackless rail equipment and a corresponding increase in the parameters (height, step spacing, spacing) of the high-wall mining section of the caving mining method has been in 1975 in Hebei Copper Mine 2 ~ # Ore body industrial test. The test proves that this mining scheme is a further development of subsea sub-caving method, which has created certain conditions for extensive use of internal combustion trackless scraper and full utilization of its working efficiency, and has made obvious achievements in mining intensity and efficiency effect. Under the condition of greatly increasing the height of the end wall, it is required to know the basic law of ore flow during ore drawing-the development process and the shape and size of the ore body in order to determine the reasonable parameters of the ore-dressing structure, The loss of indicators laid the necessary foundation.