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Multi-method Based Optimization of Crown Pillar Thickness from Open Pit to Underground

被引：0
|
作者：
Xu S. [1 ]
An L. [1 ]
Li Y.-H. [1 ]
Lu D. [2 ]
机构：
[1] Key Laboratory of Ministry of Education on Safe Mining of Deep Metal Mines, Northeastern University, Shenyang
[2] Guilaizhuang Gold Mine, Shandong Gold Group Co. Ltd., Linyi
来源：
An, Long (anlong@mail.neu.edu.cn) | 2018年 / Northeast University卷 / 39期
关键词：
Crown pillar thickness; Numerical calculation; Open-pit to underground; Scaled span approach; Theoretical analysis;
D O I：
10.12068/j.issn.1005-3026.2018.08.023
中图分类号：
学科分类号：
摘要：
Taking a project from open pit to underground mining in the Guilaizhuang Gold Mine of Shandong Gold Group Co., Ltd. as an example, multiple methods including theoretical calculation, scaled span approach and analogy under similar conditions are employed to analyse the rational scope of crown pillar thickness. The influence of underground mining on the crown pillar and slope stability is analysed with different thickness crowns using the software FLAC3D. The calculation results show that the 10 m thick crown pillar can be viewed as a turning point: when the thickness is less than 10 m, the roof deformation caused by underground mining is large, and the thinner the crown pillar, the larger the displacement increment; when the thickness is over 10 m, the roof deformation from underground mining is relatively small and tends to remain stable. © 2018, Editorial Department of Journal of Northeastern University. All right reserved.
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页码：1181 / 1186
页数：5
相关论文
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