摘要
针对复杂矿体条件无底柱分段崩落法矿山存在的矿石损失贫化率高、矿山地质储量消耗过快、采掘比例失调等突出问题,详细分析了复杂矿体条件下无底柱分段崩落法矿石损失贫化的主要原因.并针对矿山存在的问题,提出了降低矿石损失贫化技术措施及下盘切岩开采+上分段下盘围岩辅助回收小进路回采下盘残留矿石新工艺,对目前国内相关矿山具有借鉴意义.
Focusing on the problems that the ore loss and depletion rate are high, the geological reserves consumption are too fast and the excavating proportion is imbalance in complex orebody conditions with pillarless sublevel caving method mine, this paper analyzed the main reasons of the ore loss and depletion in the complex orebody conditions with pillarless sublevel caving method mine. According to the problems existing in mine, this paper put forward some measures to reduce the ore lose and dilution and a new method that uses the footwall cutting stopping technology combined with the small assistant mining erterance stoping technology in the surrounding rock of head piece-wise's footwall for mining the footwall residual ores, which provided a reference case for the relevant mines.
出处
《辽宁工程技术大学学报(自然科学版)》
CAS
北大核心
2013年第10期1339-1343,共5页
Journal of Liaoning Technical University (Natural Science)
关键词
复杂矿体条件
无底柱分段崩落法
矿石损失贫化
三角矿体
原因分析
对策措施
崩矿步距
边孔角
complex orebody conditions
pillarless sublevel caving
the ore loss and depletion
triangular o0res
reason analysis
countermeasures
caving space
angle of the lateral opening