Use of an artificial crown pillar in transition from open pit to underground mining
Use of an artificial crown pillar in transition from open pit to underground mining
复制标题
从露天采矿过渡到地下采矿时使用人工冠柱
DOI：
10.1016/j.ijrmms.2019.03.028
复制
发表时间：
2019-05
影响因子：
7.2
通讯作者：
Jin Chang Yu
中科院分区：
文献类型：
--
作者：
Xu Shuai;Suorineni Fidelis T;An Long;Li Yuan Hui;Jin Chang Yu
在露天转地下开采过程中，通常在露天矿底部留有顶煤柱。冠柱往往无法收回，因此被视为永久性损失。为了解决这个问题，本文讨论了在露天转地下开采过程中使用人工顶柱代替天然顶柱。用人工顶柱代替天然顶柱，使天然顶柱中的灭菌矿石全部回收。介绍了山东归来村金矿露天转地下开采的实例。通过分析和经验方法、数值模拟和仪器仪表相结合的方法，实现了自然顶柱的安全高效开采和人工顶柱的同步施工。采用解析法和经验法确定自然顶柱厚度。数值模拟进行进一步评估的分析和经验方法的结果，并预测人工冠柱的性能。仪器监测确保了露天矿边坡和地下基础设施的安全之前，期间和之后的开采过程中，同时建设人工顶柱。结果表明，采用自然顶柱同时开采，人工顶柱置换的方法，对露天边坡和地下基础设施的保护是成功的。将开采天然顶柱、加工矿石和建造人工顶柱的成本与所获黄金的市场价格进行比较，利润为30%。虽然这项研究仅限于某一特定地雷，但这一程序可用于其他类似情况的地雷。
In the transition from open pit to underground mining, a crown pillar is usually left at the open pit bottom. Crown pillars are often not recovered and as a result they are deemed as permanent losses. To address this problem, this paper discusses use of an artificial crown pillar as replacement for the natural crown pillar during a transition from open-pit to underground mining. The substitution of the natural crown pillar with an artificial one enabled total recovery of sterilized ore in the natural crown pillar. A case study is presented on Shandong Guilai Village Gold Mine open pit transition to underground mining. The safe and profitable mining of the natural crown pillar, and the simultaneous construction of the artificial crown pillar was achieved by combined use of analytical and empirical methods, numerical modelling and instrumentation. The analytical and empirical methodologies were used to determine the natural crown pillar thickness. Numerical modelling was performed to further evaluate the results of the analytical and empirical methods, and to predict the performances of the artificial crown pillar. The instrumentation monitoring ensured safety of the open pit slopes and underground infrastructure prior to, during and after the process of mining and simultaneous construction of the artificial crown pillar. It was concluded that the process of simultaneously mining the natural crown pillar and replacing it with an artificial one was successful in protecting the open pit slopes and underground infrastructure. A comparison of the cost of mining the natural crown pillar, processing the ore and constructing the artificial crown pillar with the market price of the gold obtained showed a profit of 30%. While this study is limited to a particular mine, the procedure could be used in other mines in similar situations.
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影响因子：
7.4
作者：
Jae-Hong Kim;Sangseom Jeong;Seong-Wan Park;J. Sharma
通讯作者：
Jae-Hong Kim;Sangseom Jeong;Seong-Wan Park;J. Sharma
DOI：
10.1201/noe0415444019-c178
发表时间：
2007
期刊：
--
影响因子：
--
作者：
J. G. Henning
通讯作者：
J. G. Henning
DOI：
10.1007/s10064-001-0147-9
发表时间：
2002-08
影响因子：
4.2
作者：
G. Swift;D. Reddish
通讯作者：
G. Swift;D. Reddish
DOI：
--
发表时间：
2015
期刊：
--
影响因子：
--
作者：
Joyce Sze Yee Chung;E. Topal;O. Erten
通讯作者：
Joyce Sze Yee Chung;E. Topal;O. Erten
影响因子：
2
作者：
R. Green
通讯作者：
R. Green