【摘要】 针对姑山铁矿后和睦山1#矿体矿岩软破的开采条件,提出用分段崩落法取代空场法开采倾斜中厚矿体的技术方案;应用FLAC3D对分段崩落法的卸压范围进行了数值分析,据此确定出适于卸压的采场结构,由此形成了无底柱分段崩落法开采倾斜矿体的卸压开采方案。该方案目前正在实施之中。更多还原

【Abstract】 Based on the condition of cracking ore and rock body and low strength in Houhemushan mining area of Gushan iron mine,the paper put forward the depressurization sublevel caving method instead of the openstope method to mine the medium-thickness ore;To simulate the problem,a numerical analysis method,FLAC3D is applied to analysis the depressurization range of sublevel caving method.The paper determined the suitable stope structure by the numerical results,so formed the depressurized mining scheme of sublevel caving method to mine medium-thickness and sloping ore body and implementing now.更多还原