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有色金属(矿山部分):2019,71(2):8-11
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基于FLAC3D的铁矿山露天转地下境界顶柱稳定性研究
(1.(1.金属矿山高效开采与安全教育部重点实验室,北京 100083;2.北京科技大学 土木与资源工程学院,北京 100083;3.北京云冶矿业有限责任公司,北京 101515))
Stability of boundary pillars for transition from open-pit to underground mining in an iron mine based on FLAC3D
(1.(1. State Key Laboratory of High-Efficient Mining and Safety of Metal Mines, Ministry of Education, Beijing 100083, China;2. School of Civil and Resource Engineering, University of Science and Technology Beijing,Beijing 100083, China;3. Beijing Yunye Mining Co., Ltd., Beijing 101515, China))
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中文摘要: 针对露天转地下开采过渡期间露天与地下同时开采相互影响的问题,对境界顶柱的合理厚度进行了研究。基于材料力学和结构力学理论,对境界顶柱的合理厚度进行了理论计算。采用三维数值模拟实验方法,对不同的顶柱厚度进行了实验研究。获得了在相同采空区跨度下的不同厚度的境界顶柱的稳定性规律,并提出了优化方案。采用该方案能够有效地提高露天转地下开采过渡期间的安全性和资源利用率。
Abstract:According to the mutual interference of two mining activities during the transition period from open pit to underground mine, the study on adopting reasonable thickness of boundary pillar was carried out. With the guidance of theories of material mechanics and structural mechanics, the reasonable thickness of boundary pillar was calculated. By means of the numerical simulation experiment, the stability of different thickness of boundary pillar was studied. The stability change characteristics of different thickness of boundary pillar were obtained at the same goaf span, and the optimal design scheme of the boundary pillar was proposed. The production safety and the utilization of resources can be effectively improved by adopting the scheme during the transition period from open pit to underground mine.
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贾穆承1,2,明 建1,2,郭海东3,毛市龙1,2.基于FLAC3D的铁矿山露天转地下境界顶柱稳定性研究[J].有色金属(矿山部分),2019,71(2):8-11.
JIA Mucheng1,MING Jian1,2,GUO Haidong3,MAO Shilong1,2.Stability of boundary pillars for transition from open-pit to underground mining in an iron mine based on FLAC3D[J].NONFERROUS METALS(Mining Section),2019,71(2):8-11.

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