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首页> 外文期刊>International Journal of Mining and Geo-Engineering >Comparison of pseudo-static, Newmark and dynamic response analysis of the final pit wall of Sungun copper mine
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Comparison of pseudo-static, Newmark and dynamic response analysis of the final pit wall of Sungun copper mine

机译:gun郡铜矿最终矿墙伪静态,Newmark和动力响应分析的比较

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Sungun Copper Mine is located in an area with a high level of seismic hazard. Most recently, the Ahar-Varzeqan earthquake with a magnitude of 6.2 on Richter scale occurred on August 11, 2012; at a distance about 40 kilometers away from the mine. Nevertheless, the seismic stability of the final pit wall has not been comprehensively reviewed. In this research, the southwestern wall of the final pit of Sungun Mine investigated by pseudo-static, Newmark and numerical methods. Besides, through the paper, it is tried to explain some of the difficulties in accomplishing and interpretation of results in a dynamic analysis of a mining slope. Pseudo-static analysis revealed that the final pit wall is unsafe against the design earthquake with a high probability of failure. Results of Newmark analysis proved that in the case of design earthquake a large failing region would form. Based on a dynamic numerical analysis of the pit wall, continuous earthquake-induced movements in the forward and downward directions observed, which might be a sign of pit wall instability. The effect of underground water drainage on pit wall stability was investigated in the numerical model. Resulted time histories of the drained pit wall displacements proved that merely water drainage is sufficient for protecting the pit wall against the design earthquake.
机译:Sungun铜矿位于地震危险性高的地区。最近,2012年8月11日发生了里氏6.2级的阿哈尔-瓦尔泽干地震;距矿山约40公里。然而,最终坑壁的地震稳定性尚未得到全面审查。本研究利用伪静力法,Newmark法和数值方法研究了Sungun矿最终矿井西南壁。此外,通过本文,试图解释在对采矿边坡进行动态分析时完成和解释结果的一些困难。伪静力分析表明,最终的坑壁对于设计地震是不安全的,很有可能发生故障。 Newmark分析的结果证明,在设计地震的情况下,将形成较大的失效区域。根据井壁的动态数值分析,观察到地震在前后方向上引起的连续运动,这可能是井壁不稳定的标志。在数值模型中研究了地下水排水对井壁稳定性的影响。排水坑壁位移的时间历史证明,仅排水就足以保护坑壁免受设计地震的影响。

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