恒阻大变形锚杆力学特性及其工程应用

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摘要传统刚性锚杆允许巷道围岩的变形量一般均在200 mm以下，不能适应巷道围岩大变形破坏而被拉断失效。自主研发的恒阻大变形锚杆能提供恒定工作阻力和稳定变形量，该锚杆主要由恒阻装置和弹性杆体组成，适应于软岩巷道、深部巷道的围岩支护，可以有效控制冲击地压等工程灾害。利用自主研发的恒阻大变形锚杆(索)试验系统对恒阻大变形锚杆进行室内力学特性试验，试验结果表明，恒阻范围内累计变形量最大值可达1 000 mm。在我国典型深部软岩矿井巷道支护进行现场科学试验，效果良好。

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关键词 ：采矿工程, 恒阻大变形锚杆, 动力冲击试验系统, 静力拉伸试验系统

Abstract：Traditional rigid anchor bolts allow the deformation of surrounding rock of roadway generally below 200 mm. The rigid anchor bolts often appear tensile failure because they can?t adapt to the large deformation of surrounding rock. A type of anchor bolts with constant resistance and large deformation was therefore manufatured，which can provide the constant resistance and stable deformation. This type of anchor bolt is mainly composed of a constant resistance device and an elastic rod，which is suitable for supporting the surrounding rock in soft rock or deep roadways to effectively control the engineering disaster of rock burst etc. The anchor bolts of constant resistance and large deformation were tested with an experimental system developed in house. The experimental results show that the maximum value of the accumulated deformation of the anchor bolts with constant resistance is up to 1 000 mm. Field tests were also performed in the roadway support of a typical deep and soft rock mine with good effect.

Key words： mining engineering constant resistance and large deformation anchor bolt dynamic impact experimental system static tensile experimental system

收稿日期: 2013-11-01

引用本文:

何满潮1，郭志飚1，2. 恒阻大变形锚杆力学特性及其工程应用[J]. 岩石力学与工程学报, 2014, 33(7): 1297-1308.
HE Manchao1，GUO Zhibiao1，2. MECHANICAL PROPERTY AND ENGINEERING APPLICATION OF ANCHOR BOLT WITH CONSTANT RESISTANCE AND LARGE DEFORMATION. , 2014, 33(7): 1297-1308.

链接本文:

http://www.rockmech.org/CN/Y2014/V33/I7/1297

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