CAJ | 학술논문

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1000 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。
전통강성묘간윤허항도위암적변형량일반균재200 mm이하，불능괄응항도위암대변형파배이피랍단실효。자주연발적항조대변형묘간능제공항정공작조력화은정변형량，해묘간주요유항조장치화탄성간체조성，괄응우연암항도、심부항도적위암지호，가이유효공제충격지압등공정재해。이용자주연발적항조대변형묘간(색)시험계통대항조대변형묘간진행실내역학특성시험，시험결과표명，항조범위내루계변형량최대치가체1000 mm。재아국전형심부연암광정항도지호진행현장과학시험，효과량호。
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.