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现代矿业 ›› 2020, Vol. 36 ›› Issue (4): 56-58.

• 采矿工程 • 上一篇    下一篇

新城金矿高地应力条件下顶底柱规模化采矿技术研究

朱兆文1,高振领2,付秋波1,苏环1,王京生1   

  1. 1.山东黄金矿业股份有限公司新城金矿;2.山东黄金集团烟台设计研究工程有限公司
  • 出版日期:2020-04-25 发布日期:2020-05-20

Study on Large Scale Mining Technology of Top and Bottom Pillar under High Ground Stress in Xincheng Gold Mine

Zhu Zhaowen1,Gao Zhenling2,Fu Qiubo1,Su Huan1,Wang Jingsheng1   

  1. 1.Xincheng Gold Mine,Shandong Gold Mining Co.,Ltd.;2.Shandong Gold Group Yantai Design and Research Engineering Co.,Ltd.
  • Online:2020-04-25 Published:2020-05-20

摘要: 新城金矿Ⅴ#矿体-580 m中段顶底柱留有大量矿石且品位较高,为减少资源损失,扩大企业经济需要,亟需对顶底柱进行回收。结合新城金矿-580 m中段地质赋存条件和高地应力等特征,设计了进路垂直于矿体走向布置的上向进路充填采矿法,从矿体最上盘第一条进路开始,以采场联络巷为终点,沿矿体走向方向后退式回采,垂直于矿体走向从上盘到下盘依次回采。采场沿矿体走向方向布置,和人工假顶的方向正好呈十字交叉状,使得每一采场回采时所暴露的各条人工假顶的面积都很小,胶结充填后能很好地维护顶板的稳定性。试验结果表明,Ⅴ#矿体-580 m中段实现了顶底柱规模化开采,矿石损失率大约为31.6%,顶柱回采的最大作业能力为1 300 t。上向进路充填采矿法科学合理、简单高效,对类似地质条件矿体开采具有借鉴意义。

关键词: 顶底柱, 上向进路充填采矿法, 规模化开采, 顶板稳定性

Abstract: There are a large number of ores with high grade in the top and bottom pillars of the Ⅴ#orebody -580 m middle section of Xincheng Gold Mine.In order to reduce resource loss and expand the economic needs of enterprises,it is urgent to recover the top and bottom pillars.Considering the geological conditions and high ground stress in -580 m middle section of Xincheng Gold Mine,an upward drift filling mining method with the drift perpendicular to the orebody strike is designed.Starting from the first drift on the uppermost wall of the orebody,the stope is connected with the roadway as the end point,and the stope is retreated along the orebody strike direction.The stope sequence perpendicular to the orebody strike direction is from the upper wall to the lower wall.The stope is arranged along the direction of ore body strike and the direction of artificial false roof is just in a cross shape,so that the area of each artificial false roof exposed in each stope is very small,and the stability of roof can be well maintained after cemented filling.The study and test results show that the large-scale mining of top and bottom pillars of Ⅴ#orebody -580 m middle section is realized,the ore loss rate is about 31.6%,the maximum operation capacity of top pillar mining is 1 300 t.The above study results further show that the mining scheme proposed in this paper is simple and efficient,the efficiency is very high,which can provide reliable reference for the mining operation of the orebodies under the similar geological and mining conditions.

Key words: Top and bottom pillar, Upward drift filling mining method, Large-scale mining, Stability of roof