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. 本文根據實(shí)驗及生產(chǎn)放礦結果，分析研究了無(wú)底柱分段崩落法放礦過(guò)程中礦石損失貧化的關(guān)系問(wèn)題。
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. 并根據無(wú)底柱分段崩落法礦山的不同情況，提出了各種應用無(wú)貧化放礦的實(shí)施方案。
