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金属矿山 ›› 2016, Vol. 45 ›› Issue (03): 35-39.

• 采矿工程 • 上一篇    下一篇

马钢凹山露天采场南帮边坡监测及稳定性分析

王宏伟1,2,王攀1,2,王永强3,陈振鸣1,2   

  1. 1.北京科技大学土木与环境工程学院,北京 100083;2.金属矿山高效开采与安全教育部重点实验室,北京 100083;3.河北省冶金研究院,河北 石家庄 050021
  • 出版日期:2016-03-15 发布日期:2016-05-17
  • 基金资助:

    * 北京高校“青年英才计划”项目(编号:YETP0341)。

Monitoring and Stability Analysis of South Slope of Washan Open-pit Mine,Ma-steel

Wang Hongwei1,2,Wang Pan1,2,Wang Yongqiang3,Chen Zhenming1,2   

  1. 1.School of Civil and Environment Engineering,University of Science and Technology Beijing,Beijing 100083,China;2.Key Laboratory of High-Efficient Mining and Safety of Metal Mines (Ministry of Education of China ),Beijing 100083,China;3.Hebei Metallurgical Research Institute,Hebei 050021,China
  • Online:2016-03-15 Published:2016-05-17

摘要: 针对马钢南山铁矿凹山采场开采深度加大,边坡失稳问题日益突出的现状,通过采场边坡围岩应力监测及深部岩体位移监测,得到深部岩体位移和围岩应力变化的趋势、范围,同时得出爆破震动对边坡稳定性的影响程度,并对边坡的稳定性做出评价。基于FLAC3D数值分析软件,模拟矿区开采,得到开采过程中的边坡应力、位移变化情况,通过与之前边坡监测得到的稳定性评价结果进行对比,进一步验证了边坡稳定的可靠性。得出结论:凹山采场如继续向下开采,需加强监测或者加固边坡后再向下开挖。

关键词: 露天开采, 应力监测, 位移监测, FLAC3D

Abstract: The slope instability of Washan Stope of Nanshan Iron Mine,Ma-steel,is increasingly prominent with the increase of mining depth.In view of this situation,the changing trend and scope of deep rock displacement and surrounding rock stress was found out through monitoring of surrounding rock stress and deep rock displacement.At the same time,the influencing level of blasting vibration on slope stability was obtained,and the stability of the slope was estimated.The variation of the stress and displacement in the process of mining was achieved based on FLAC3D numerical analysis software in mining simulation.Through contrasting with the evaluation results of the stability before slope monitoring,its reliability on slope stability was further verified.The conclusion is that if Washan stope is planned to continue exploiting downwards,it is necessary to strengthen monitoring or reinforce slope before excavating.

Key words: Open-pit mine, Stress monitoring, Displacement monitoring, FLAC3D