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投稿时间:2018-10-06 修订日期:2018-10-06
投稿时间:2018-10-06 修订日期:2018-10-06
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 of adopting reasonable thickness of boundary pillar was carried out. With the guidance of theories of material mechanics and structural mechanics, the theoretical calculation of the reasonable thickness of boundary pillar is got through theoretical calculation. 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 put forward. 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.
keywords: transition from open pit to underground the thickness of boundary pillar goaf span theoretical calculation numerical simulation experiment
文章编号:20181006002 中图分类号: 文献标志码:
基金项目:
作者 | 单位 | 邮编 |
贾穆承 | 北京科技大学 | 100083 |
明建* | 北京科技大学 金属矿山高效开采与安全教育部重点实验室 | 100083 |
郭海东 | 北京云冶矿业有限责任公司 | 101515 |
毛市龙 | 北京科技大学 | 100083 |
Author Name | Affiliation | Postcode |
University of Science and Technology Beijing | 100083 | |
mingjian | University of Science and Technology Beijing | 100083 |
101515 | ||
100083 |
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