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金属矿山 ›› 2011, Vol. 40 ›› Issue (10): 58-60.

• 采矿工程 • 上一篇    下一篇

弓长岭露天矿顺坡断层影响的数值分析

王鑫瑀1,2,常来山1,李闻1,程佰宝1   

  1. 1.辽宁科技大学资源与土木工程学院;2.河北钢铁集团矿业有限公司
  • 出版日期:2011-10-11 发布日期:2011-10-12
  • 基金资助:

    * 国家自然科学基金重点项目(编号:51034005)。

Numerical Simulation on Influence of Longitudinal Fault of Gongchangling Open Pit

Wang Xinyu1,2,Chang Laishan1,Li Wen1,Cheng Baibao1   

  1. 1.Resources and Civil Engingineering School,University of Science and Technology Liaoning;2.Hebei Iron and Steel Group Mining Co.,Ltd.
  • Online:2011-10-11 Published:2011-10-12

摘要: 对弓长岭露天铁矿北帮岩体边坡建立了FLAC计算简化模型,采用弱化法和Interface法对走向顺坡断层进行了模拟分析。数值模拟采用摩尔-库仑模型并分10步进行开采,分析了受断层影响产生的岩体内应力与位移的不连续性,确定了边坡表面岩体、断层破碎带充填物及断层附近岩体的塑性流动区、塑性卸载区和拉伸破坏区的产生与发展的演变规律,并对比分析了弱化法和Interface法模拟断层力学行为的适应性与优缺点。  

关键词: 顺坡断层, 弱化法, Interface法, FLAC

Abstract: This paper establishes the FLAC computation simplified model for the rock slopes in the north side of Gongchangling Open Pit.It simulates and analyzes the longitudinal fault by adopting the weakening method and the interface method.In the numerical simulation,Mohr-Coulomb model with 10 steps is adopted in mining to analyze the discontinuous of stress and displacement in the rock affected by faults.Then,the evolution law of the surface slope rock,the fills in faults and fracture zone,and rock plastic flowed area,plastic unloading area and tensile failure zone near the faults are confirmed.The adaptive feature of mechanical behavior of faults by the two methods and their merits and demerits are compared and analyzed.

Key words: Longitudinal fault, Weakening method, Interface method, FLAC