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首页> 外文会议>2007采矿科学与安全技术国际学术会议 >Safety Analysis for Bonding Interface Between Bolt and Rock
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Safety Analysis for Bonding Interface Between Bolt and Rock

机译：螺栓与岩石结合界面的安全性分析

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In bolted rock engineering, the bonded interface separation between bolt and rock mass often leads to roof fall in the bolt supporting roadway in coal mine, because of shear stress concentration . Based on the Mindlin's model, the stress distribution function on the interface have been deduced. It is shown, as the increasing of elastic modulus of rock, the shear stress concentrating zone would move toward the out end of bolt. Moreover, the software of ANSYS has been used for simulating the shear stress distribution along interface, it is shown the shear stress distribution along longitudinal direction is asymmetry, i.e., the shear stress near out end of bolt is very large, but it decreases rapidly far away the out end. Shear stress distribution on the interface has also been affected by Young's modulus E and Possion's ratio . It is valuable for research the bolt reinforcing mechanism as well as reinforcing safety reliability of roadway.
机译：在锚固岩石工程中，由于剪切应力集中，锚杆与岩体之间的粘结界面分离通常会导致煤矿锚杆支护巷道的顶板掉落。基于Mindlin模型，推导了界面上的应力分布函数。如图所示，随着岩石弹性模量的增加，剪切应力集中区将向锚杆的末端移动。此外，利用ANSYS软件模拟了沿界面的剪应力分布，结果表明沿纵向的剪应力分布是不对称的，即螺栓末端附近的剪应力很大，但迅速减小。走出去。界面上的剪应力分布也受到杨氏模量E和位置比的影响。对于研究锚杆加固机理以及增强巷道安全可靠性具有重要的意义。

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