• 论文
主办单位:煤炭科学研究总院有限公司、中国煤炭学会学术期刊工作委员会
正交试验设计的 FBG 测力锚杆结构封装优化及应用
  • Title

    Structure packaging optimization and application of FBG dynamometry bolts based on the orthogonal test design

  • 作者

    梁敏富方新秋陈宁宁吴刚薛小妹宋扬张璠

  • Author

    LIANG Minfu,FANG Xinqiu,CHEN Ningning,WU Gang,XUE Xiaomei, SONG Yang,ZHANG Fan

  • 单位

    中国矿业大学 矿业工程学院中国矿业大学 智能化开采研究中心中国矿业大学 经济管理学院中国矿业大学 信息与控制工程学院

  • Organization
    1.School of Mines,China University of Mining & Technology,Xuzhou221116,China;2.Research Center of Intelligent Mining,China University of Mining & Technology,Xuzhou221116,China;3.School of Economics and Management,China University of Mining & Technology,Xuzhou221116,China;4.School of Information and Control Engineering,China University of Mining & Technology,Xuzhou221116,China
  • 摘要

    煤矿智能化开采是我国煤炭开采技术发展的新阶段智能感知又是煤矿智能化开采的核心 技术之一。 针对深部巷道变形速度快变形量大底臌严重难以形成统一的指导性锚杆支护方案 等问题提出一种能感知锚杆杆体轴力的 FBG 传感器及围岩状态感知监测系统。 基于光纤光栅传 感基本原理研究了 FBG 测力锚杆的关键技术包括测力锚杆的结构设计测力锚杆的工作原理和 应变传递机理;对比分析了基体表面粘贴封装和基体刻槽封装的 FBG 传感器应变传递规律揭示 了 FBG 传感器的应变传递变化规律及影响因素。 运用正交试验法探究了黏结剂的剪切模量凹槽 的形状以及光纤光栅的粘贴长度对应变传递效率的影响特征提出 种试验方案并设计 组锚杆 拉伸试验以获得测试结果。 通过极差分析得到:按照对应变传递效率影响大小排序黏结剂种类对 应变传递效率造成的影响最大其次为凹槽形状和光纤光栅粘贴长度;确定了最优封装方案即使 用 AB 环氧树脂胶凹槽形状为半圆形且粘贴长度为 100 mm 时应变传递效率最大。 通过方差分析 得到:黏结剂种类对应变传递效率的作用显著其次为凹槽形状光纤光栅粘贴长度对应变传递效 率的作用不显著。 在寺家庄矿 15106 回风巷建立了围岩状态感知监测系统并进行测试应用效果 显著


  • Abstract

    Intelligent coal mining is a new stage in the development of coal mining technology in China and intelligent perception is one of the core technologies of intelligent coal mining. Aiming at the problems of fast deformation speed,large deformation and serious floor heave of deep roadway,which make it difficult for technicians to plan a unified guiding bolt support scheme,a FBG sensor and a surrounding rock state perception monitoring system capable of sensing the axial force of bolt body are proposed. Based on the basic principle of fiber grating sensing,the key technologies of FBG dynamometry bolts are studied,including the structural design of dynamometry bolts,the working principle and strain transfer mechanism of dynamometry bolts. The strain transfer laws of the FBG sensor with surface mounted package and with grooved package is analyzed. The laws and influencing factors of strain transfer for the FBG sensor is obtained. The effect of the elastic modulus of the adhesive,the shape of the groove and the bonding length of the fiber grating on the strain transfer efficiency is studied by the orthogonal test method. Nine test schemes and three sets of bolt tension test are designed for testing simultaneously. The extreme value calculation results show that in order of the effect on strain transfer efficiency,the type of binder has the greatest impact on strain transfer efficiency,followed by groove shape and fiber grating bonding length. The strain transfer efficiency is the highest when AB epoxy resin adhesive is used,the groove shape is semicircular and the bonding length is 100 mm. The variance calculation results show that the type of adhesive has a significant effect on the strain transfer efficiency,followed by the groove shape and then the effect of the fiber grating bonding length on the strain transfer efficiency is not significant. Finally,a surrounding rock state perception monitoring system was carried out in the return airway 15106 in Sijiazhuang coal mine,and the application effect was remarkable.

  • 关键词

    传感器封装技术测力锚杆正交试验光纤光栅应变传递

  • KeyWords

    sensor encapsulation technology;dynamometry bolt;orthogonal test;fiber Bragg grating;strain transfer

  • 引用格式
    梁敏富,方新秋,陈宁宁,等.正交试验设计的 FBG 测力锚杆结构封装优化及应用[J].煤炭学报,2022,47(8):2950-2960.
  • Citation
    LIANG Minfu,FANG Xinqiu,CHEN Ningning,et al.Structure packaging optimization and application of FBG dynamometry bolts based on the orthogonal test design[J].Journal of China Coal Society,2022,47(8):
    2950-2960.
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主办单位:煤炭科学研究总院有限公司 中国煤炭学会学术期刊工作委员会

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