摘要
金渠金矿有扩大采选能力的空间和需求。为此,用优选法进行采矿方法选择;用数值模拟法优化采场结构参数;用正交试验法优化凿岩爆破参数。同时采用分段采准分层回采工艺;预留点柱支撑顶板,局部采用长锚索和锚杆支护,并用光面爆破减少顶板的破坏,用水准测量动态地监测顶板的下沉量。对采矿方法研究的投入,使采区机械化上向分层充填采矿法得以成功使用,取得损失率为5.68%、贫化率为12.15%,直接成本为19.07元/t的技术经济指标,把采区综合生产能力提高到500 t/d,
Jinqu gold mining has a capacity of spaces and demands expansion. For this,the optimization method is selected for mining, the numerical simulation method for optimizing the structural parameters of stope, and the orthogonal test for optimizing parameters of rock blasting. At the same time, the sub-level mining process is utilized,where the reserve point column is used to support the roof,long cables and bolting supporting in some place, and the smooth blasting to reduce the destruction of pre-board and to monitor the dynamic sinking of the roof by standard measurement. Research on mining method makes the application of the sub-level filling mining method successful. A result with direct cost 19.07 yuan/t at loss rate of 5.68% , dilution rate of 12. 15 % has been obtained, which increases the production capacity in the mining to 500 t/d.
出处
《金属矿山》
CAS
北大核心
2009年第9期54-57,共4页
Metal Mine
关键词
充填采矿法
优化
金渠金矿
Filling mining, Optimization, Jinqu gold mine
