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首页> 外文期刊>International journal of geomechanics >Experimental Study of Bolt-Anchoring Mechanism for Bedded Rock Mass
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Experimental Study of Bolt-Anchoring Mechanism for Bedded Rock Mass

机译：层状岩体锚固机制试验研究

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摘要

This study examined the effectiveness of different bolt anchoring systems in bedded rock to determine the bolt anchoring mechanism. The rock failure under shear and tensile stresses was evaluated. The results showed that bolt anchoring was achieved mainly by an anchoring agent restoring the bond of the rock surrounding the drill holes and the bolt body providing supporting resistance. The strength of the bedded rock increased with the anchoring effect. Full anchoring bolts were especially effective. In the absence of bolts, the failure mode of the rock changed from shear failure to splitting failure. With bolting, the failure plane was parallel to the bolt's axis. Shearing began along the interface between the hard and soft rock beds. Compared with end-bolt anchoring, full-length bolt anchoring offered a superior anchoring effect by increasing the strength and shear-bearing capacity of the rock so that it could bear more load.
机译：这项研究检查了层状岩石中不同锚固系统的有效性，以确定锚固机制。评估了在剪切应力和拉伸应力下的岩石破坏。结果表明，锚固锚固主要是通过锚固剂恢复钻孔周围岩石与锚固体之间的粘结力来实现的。层状岩石的强度随锚固效果而增加。完整的地脚螺栓特别有效。在没有螺栓的情况下，岩石的破坏模式从剪切破坏变为分裂破坏。使用螺栓连接时，破坏平面平行于螺栓的轴线。剪切开始于硬岩层和软岩层之间的界面。与锚杆锚固相比，全长锚杆锚固通过增加岩石的强度和抗剪承载力来提供更好的锚固效果，从而可以承受更大的载荷。

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  • 来源
    《International journal of geomechanics》 |2020年第4期|04020019.1-04020019.12|共12页
  • 作者

  • 作者单位

    China Univ Min & Technol Sch Energy & Min Engn Beijing 100083 Peoples R China;

    Chongqing Univ State Key Lab Coal Mine Disaster Dynam & Control Chongqing 400044 Peoples R China;

    Univ Punjab Inst Geol Lahore 54590 Pakistan;

    Kunming Univ Sci & Technol Fac Elect Power Engn Kunming 650504 Yunnan Peoples R China;

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  • 正文语种 eng
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  • 关键词

    Anchorage test; Bolt; Bedded rock mass; Anchoring mechanism; Shale tunnel;

    机译：锚固测试;螺栓;层状岩体;锚固机制;页岩隧道;

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