|本期目录/Table of Contents|

[1]周德红,李 文,冯 豪,等.基于FLAC3D大冶铁矿矿柱回采过程的应力分析[J].武汉工程大学学报,2016,38(3):277-282.[doi:10. 3969/j. issn. 1674?2869. 2016. 03. 015]
 ZHOU Dehong,LI Wen,FENG Hao,et al.Stress Analysis on Pillar Recovery Process of Daye Iron Mine Based on FlAC3D[J].Journal of Wuhan Institute of Technology,2016,38(3):277-282.[doi:10. 3969/j. issn. 1674?2869. 2016. 03. 015]
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基于FLAC3D大冶铁矿矿柱回采过程的应力分析(/HTML)
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《武汉工程大学学报》[ISSN:1674-2869/CN:42-1779/TQ]

卷:
38
期数:
2016年3期
页码:
277-282
栏目:
资源与土木工程
出版日期:
2016-06-22

文章信息/Info

Title:
Stress Analysis on Pillar Recovery Process of Daye Iron Mine Based on FlAC3D
作者:
周德红李 文冯 豪王浩然
武汉工程大学资源与土木工程学院,湖北 武汉 430074
Author(s):
ZHOU Dehong LI Wen FENG Hao WANG Haoran
School of Resource and Civil Engineering, Wuhan Institute of Technology, Wuhan 430074, China
关键词:
矿柱应力FLAC3D采空区
Keywords:
pillar stress fast lagrangian analysis of continua goaf
分类号:
TD853,TD325
DOI:
10. 3969/j. issn. 1674?2869. 2016. 03. 015
文献标志码:
A
摘要:
为了增加资源回收率,金属非金属矿山在回采后期需要对残留矿柱进行二次回采. 矿柱结构破坏必然引发采场力学状态发生变化,甚至影响整个采空区的稳定性. 以大冶铁矿矿柱回采过程为例,选用动力有限元法分析其采空区动力扰动下的响应特征及应力分布规律. 选取直径3 m、高12 m的竖直圆形矿柱采用FLAC3D(Fast Lagrangian Analysis of Continua)对矿柱应力随时间变化情况进行数值模拟分析. 模拟分析结果表明,矿柱负载分别在20 MPa, 40 MPa的情况下,动力扰动对矿柱的影响随其负载的增大越来越明显,在动力扰动下矿柱越容易导致失稳破坏. 矿柱的负载越小,整个采场的稳定性、安全性也就越好,因此,在为矿柱回采进行充填设计时,应充分考虑矿柱的负载作用.
Abstract:
To increase resource recovery, the residual pillars are needed for secondary recovery at the late stage in the metal and non-metal mines. However, the damage of the pillar structure can lead to the changes of the stope mechanic status, and even affects the stability of the whole mined-out area. Taken Daye iron mine as a case, the response characteristics and distribution discipline of the goaf were analyzed under the dynamic disturbance by using the dynamic finite element analysis. The stress changes with time of the vertically circular pillar with the diameter of 3 m, height of 12 m were simulated using FLAC3D. Results show that, at the pillar loads of 20 MPa, 40 MPa, the affect of the dynamic disturbance is more obvious on the pillars with the load increasing, easily causing instability of the pillars. The stability and safety are better in the entire stope when the pillar load is smaller. Thus, we should take full account of the pillar load during the refilling design.

参考文献/References:

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备注/Memo

备注/Memo:
更新日期/Last Update: 2016-06-23