武汉工程大学学报2016，Vol.38Issue(3)：277-282,6.DOI:10.3969/j.issn.1674⁃2869.2016.03.015
基于FLAC3D大冶铁矿矿柱回采过程的应力分析
Stress Analysis on Pillar Recovery Process of Daye Iron Mine Based on FlAC3D
摘要
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 distur?bance 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.关键词
矿柱/应力/FLAC3D/采空区Key words
pillar/stress/fast lagrangian analysis of continua/goaf分类
矿业与冶金引用本文复制引用
周德红,李文,冯豪,王浩然..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):277-282,6.基金项目
2015年安全生产重大事故防治关键技术科技项目(hubei-0008-2015AQ) （hubei-0008-2015AQ）
湖北省安全生产监督管理局2015年、2016年安全生产专项资金项目 （）
湖北省教育厅2014年度高校青年教师深入企业行动计划项目(XD2014132) （XD2014132）
武汉工程大学2014年研究生教育教学改革研究项目(yjg201407) （yjg201407）
