三鑫金铜矿复杂充填体下留设护壁回采优化研究

发布时间：2018-07-12 13:16

本文选题：复杂充填体 + 间柱回采　；参考：《金属矿山》2017年11期

【摘要】：目前,湖北三鑫有限公司充填体下间柱回采多采用上向分层充填法,回采中常留设一定厚度护壁减小对两侧充填体影响。为探究矿山预留间柱安全经济回采方案,现针对该公司-370 m中段间柱进行残矿回采研究,提出留设0、0.5、1.0、1.5 m护壁矿体4种回采方案;借助有限差分软件,对该4个方案在-370 m中段进行间柱回采模拟运算,研究了不同方案下采场开采过程中顶板应力、位移等指标的变化规律;综合分析比较了各方案的回采安全性与经济效益,对比选取出最优的回采方案。结果表明:在间柱回采过程中,矿房两侧预留1 m护壁矿体时,矿房顶板沉降、底板隆起最小且矿房较稳定,同时矿石损失量最小,为最优回采方案,为该矿山残矿回采起到了一定的指导作用。
[Abstract]:At present, the upper layer filling method is often used in the lower column stoping of the backfill body in Hubei Sanxin Co., Ltd., and the influence on both sides of the backfill body is reduced by retaining a certain thickness of wall protection in the stoping process. In order to probe into the safe and economical mining plan of reserved compartment pillar in mine, this paper, aiming at the research of residual mining in the middle section of -370m section of the company, puts forward four kinds of stoping schemes for retaining 0. 5 ~ 0. 5 ~ 1. 0 ~ 1. 5 m retaining wall orebody, with the help of finite difference software, In the middle of -370m section, the four schemes are simulated and calculated, and the variation rules of roof stress and displacement in the process of mining under different schemes are studied, and the safety and economic benefit of each scheme are comprehensively analyzed and compared. Compare and select the optimal mining plan. The results show that in the process of interpillar mining, when 1 m wall orebody is reserved on both sides of the mine house, the roof settlement of the mine house, the minimum uplift of the bottom slab and the stability of the mine house, and the minimum ore loss are the best mining schemes. It plays a guiding role in mining residual ore in this mine.
【作者单位】：武汉理工大学资源与环境工程学院;矿物资源加工与环境湖北省重点实验室;湖北三鑫金铜股份有限公司;
【基金】：中央高校基本科研业务费专项(编号:2017II36GX) 国家自然科学基金项目(编号:51774220)
【分类号】：TD862.1

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