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金属矿山 ›› 2010, Vol. 39 ›› Issue (5): 16-20+116.

• 采矿工程 • 上一篇    下一篇

大冶铁矿充填法采场结构参数校核与建议

李克顺1, 吴姗2, 宋卫东2   

  1. 1.武汉钢铁集团矿业有限责任公司;2.北京科技大学
  • 出版日期:2010-05-15 发布日期:2010-11-09

Check and Proposal for Stope Structural Parameters of Filling Method in Daye Iron Mine

Li Keshun1,Wu Shan2,Song Weidong2   

  1. 1.Wuhan Iron and Steel Group Mining Co.,Ltd.; 2.University of Science and Technology Beijing
  • Online:2010-05-15 Published:2010-11-09

摘要: 结合大冶铁矿矿床开采技术条件,对东采-180 m水平空场嗣后胶结充填采矿法的采场结构参数进行了校核计算和模拟分析。首先采用力学模型法,将采场顶板简化为简支梁,计算顶板的最大跨度以确定采场结构参数范围,并对矿柱的强度进行计算。其次采用FLAC软件进行数值模拟分析,采用“隔一采一”的开采顺序对矿房和矿柱进行分步开挖,通过对应力分布规律、塑性区和位移变化规律的分析,求解安全系数,并综合开采效率和安全系数等因素,提出了大冶铁矿充填法采场结构参数范围建议。

关键词: 分段空场嗣后胶结充填法, 数值模拟, 采场结构参数范围

Abstract: In combination with the mining technology conditions of Daye iron deposit,the stope structural parameters of the subsequent cementation and filling method for the level of -180 m at the eastern mining area were calculated and simulated.Firstly,the stope roof was simplified as the support beam by using the mechanical model,and the maximum span of the roof were calculated to determine the scope of stope structural parameter.Then,the strength of pillar was calculated.Secondly,the numerical simulation is made by FLAC software.The sequence of “one mined,one left” mining method is taken to recover the mining room and pillar step by step.The safety factor was achieved through analyzing the stress distribution and the variation of plastic zone and displacement.Comparing the integrated mining efficiency and the safety factors,recommendation on the stope structural parameters of filling method for Daye Iron Mine was proposed.

Key words: Sublevel subsequent cementation and filling method, Numerical simulation, The scope of stope structural parameters