摘要
在金属矿山地下开采过程中,无底柱分段崩落法回采缓倾斜矿体时,矿体下盘会产生大量损失与贫化,增加开采难度的同时也浪费了矿产资源,降低了企业的经济效益。为解决这一问题,以某矿山为例,提出一种无底柱分段崩落法开采缓倾斜矿体时,提高矿体下盘回采率的新型工艺。现场应用结果表明,该新型工艺较原采矿方法在矿块贫化率基本保持不变的情况下,增加少量工程,矿块回采率提高了6.24个百分点,降低了矿体下盘回采的难度,矿山经济效益提高了2.95个百分点。
In the process of underground mining in metal mines, using sublevel caving method without sill pillar to recover gently inclined orebody will cause a large amount of ore loss and dilution in the orebody footwall, which increases the difficulty of mining, wastes mineral resources and reduces the economic benefit of enterprises. In order to solve the above problems, taking a mine as an example, a new mining technology by sublevel caving method without sill pillar to improve the recovery rate of the orebody footwall was proposed. Field application results show that compared with the original mining method, this new technology adds a small amount of engineering under basically unchanged ore dilution rate, and the ore recovery rate is increased by 6.24 percentage points, which reduces the difficulty of ore body footwall recovery. The economic efficiency of the mine is increased by 2.95 percentage points.
作者
鲁道嵩
赵野
庞进士
LU Daosong;ZHAO Ye;PANG Jinshi(Benxi Yuhang Mining Co.,Ltd,Benxi,Liaoning 117000,China)
出处
《矿业研究与开发》
CAS
北大核心
2021年第7期25-27,共3页
Mining Research and Development
关键词
无底柱分段崩落法
新型工艺
回采率
矿体下盘
缓倾斜矿体
Sublevel caving method without sill pillar
New mining technology
Recovery ratio
Orebody footwall
Gently inclined orebody
