The relation between ore loss and dilution during drawing in sublevel caving mining is analysedand studied on the hasis of the results from experiments and production. 本文根据实验及生产放矿结果，分析研究了无底柱分段崩落法放矿过程中矿石损失贫化的关系问题。
Aceording to the diffcrent conditions of mines applied non-sill sublevel caving method,various programmes for application of non-dilution ore drawing mothod are presented. 并根据无底柱分段崩落法矿山的不同情况，提出了各种应用无贫化放矿的实施方案。
