摘要
针对现有锚杆(索)长度检测方法操作复杂、检测精度低等问题,提出了一种基于磁致伸缩导波技术的矿用锚杆(索)长度无损测量方法,介绍了锚杆(索)长度测量原理、测量系统的设计方案以及测量操作方法,在实验室环境下完成了系统速度标定以及混凝土结构中的锚杆长度测量。实验结果表明,该方法的最大测量误差为2.66%,平均测量误差为0.33%,满足现有煤矿锚杆(索)长度测量应用要求。
For problems of complex operations and low measuring precision of existing length measuring methods for bolt or anchor cable, a non-destructive length measuring method for mine-used bolt or anchor cable was proposed which was based on magnetostriction guided wave technology. Length measuring principle of bolt or anchor cable, design scheme of a measuring system and measuring operations were introduced. Speed of the measuring system was calibrated and length of bolt in concrete structure was measured in lab. The experimental results show that the method has the maximum error of 2.66% and average error of O. 33 %, which satisfies application requirement of length measurement of mine-used bolt.
出处
《工矿自动化》
北大核心
2015年第1期76-79,共4页
Journal Of Mine Automation
基金
中煤科工集团重庆研究院有限公司青年创新基金资助项目(2013QNJJ24)
关键词
锚杆
锚索
长度测量
无损测量
磁致伸缩导波
bolt
anchor cable
length measurement
non-destructive measurement
magnetostrictionguided wave
