会泽矿山深部高应力巷道耦合支护对策及其应用
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摘要
基于会泽矿业矿山厂深部破坏特征及失稳模式的分析,以断面较大的采准斜坡道巷道为研究对象,总结了深部高应力巷道变形力学机制。采用数值模拟方式,分析了原支护条件下巷道变形破坏过程。基于复合型变形力学机制的转化,针对性提出了深部高应力巷道的耦合控制对策,并开展了相关的支护工业试验。模拟及监测结果表明,所采用的螺纹钢锚杆控顶+管缝锚杆控帮+钢筋网+喷射混凝土表面防护的耦合控制对策对于深部斜坡道巷道的控制效果显著,可为该条件下的深部高应力巷道的支护提供参考和借鉴。
Based on the analysis of the failure characteristics and instability mode at depths in Huize mine,the roadway of the ramp with a large section is taken as the research object,and its mechanical mechanism of deformation in the highly-stressed ground at depths is summarized.The numerical simulation method is used to analyze the deformation and failure process of the roadway under the original supporting conditions.Based on the transformation of the composite deformation mechanics mechanism,the coupling control strategy of the roadway in the highly-stressed ground at depths is proposed,and the related support industry experiments are carried out.The simulation and monitoring results show that the coupling control strategy including of the threaded steel blot to control roof,split bolt to control wall,steel mesh and shotcrete to protect surface of the roadway is significant for the stability control of the damp at depth,which could can provide reference for the support of the roadway in the highly-stressed ground at depths under this condition.
Based on the analysis of the failure characteristics and instability mode at depths in Huize mine,the roadway of the ramp with a large section is taken as the research object,and its mechanical mechanism of deformation in the highly-stressed ground at depths is summarized.The numerical simulation method is used to analyze the deformation and failure process of the roadway under the original supporting conditions.Based on the transformation of the composite deformation mechanics mechanism,the coupling control strategy of the roadway in the highly-stressed ground at depths is proposed,and the related support industry experiments are carried out.The simulation and monitoring results show that the coupling control strategy including of the threaded steel blot to control roof,split bolt to control wall,steel mesh and shotcrete to protect surface of the roadway is significant for the stability control of the damp at depth,which could can provide reference for the support of the roadway in the highly-stressed ground at depths under this condition.
引文
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[4]陈炳瑞,冯夏庭,明华军,等.深埋隧洞岩爆孕育规律与机制:时滞型岩爆[J].岩石力学与工程学报,2012,31(3):561-569.CHEN Bingrui,FENG Xiating,MING Huajun,et al.Evolution law and mechanism of rockburst in deep tunnel:time delayed rockburst[J].Chinese Journal of Rock Mechanics and Engineering,2012,31(3):561-569.
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