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石碌铁矿露天挂帮矿开采技术及工程实践
- 作者：
- 段永祥
- 作者单位：
- 金诚信矿业管理股份有限公司
基金项目：
- isnull
详细信息：
- 作者简介：
- 段永祥(1968—)，男，甘肃金昌人，工程师，从事金属矿山采矿技术研究及管理工作；北京市丰台区育仁南路三号楼金诚信大厦，金诚信矿业管理股份有限公司，100070；E-mail：3203358126@qq.com
- 通讯作者：
- isnull
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Mining technology for hanging wall ore in Shilu Iron Mine and engineering practice
- English Author：
- Jinchengxin Mining Management Co.,Ltd.
- Unit：
- 摘要
- 在线预览
- 参考文献
摘要:
为确保高陡边坡下露天挂帮矿的安全高效回采，在详细分析石碌铁矿开采技术条件的基础上，开展了无底柱分段崩落采矿法试验研究。详细介绍了该方法的采场结构参数、采准切割工程、回采工艺、地压管理等。采用低段高回采，以减小围岩的暴露面积；不留底柱，减少资源损失；采用中深孔爆破落矿，铲运机出矿，生产效率高、成本低。现场实践表明：该采矿方法能高效回收残留在露天矿最终边坡上的挂帮矿，并有效保证开采过程中露天矿最终边帮的稳定和采场安全。采矿成本20.00元/t，采矿损失率21 %，矿石贫化率14 %。该采矿技术可为类似赋存环境下的露天挂帮矿开采提供借鉴。
关键词:
露天矿；高陡边坡；挂帮矿；无底柱分段崩落采矿法；稳定性
Abstract:
In order to ensure the safe and efficient mining of hanging wall ore under high and steep slopes,experimental research on pillarless sublevel caving mining method is carried out based on the detailed analysis of the miningtechnical conditions in Shilu Iron Mine.Then,the stope structure parameters,preparation and cutting engineering,miningtechnology,ground pressure management and so on are analyzed in detail.This mining method has high production efficiency and low cost,because the low section height is adopted to reduce the exposed area of surrounding rock,the bottom pillar is omitted to reduce resource loss,and medium-long hole blasting method and scraper are used for ore haulage.The field practice shows that this mining method can efficiently recover the hanging wall ore left on the final slopes in open pit mines,and guarantee the stability of the final slopes in open pit mines and the safety of stope during the mining process.The mining cost is 20.00 yuan/t,the mining loss rate is 21 %,and the ore dilution rate is 14 %.This mining technology can provide a reference for the mining of open pit hanging wall ore under similar occurrence conditions.
Keywords:
open pit mine;high and steep slopes;hanging wall ore;pillarless sublevel caving mining method;stability
