[1]柴 敬,张 亮,曹敬强,等.光纤传感应力检测的相似模拟实验[J].西安科技大学学报,2014,(06):656-663.[doi:10.13800/j.cnki.xakjdxxb.2014.0605]
 CHAI Jing,ZHANG Liang,CAO Jing-qiang,et al.Similar material model experiment of stress detection by fiber Bragg grating sensor[J].Journal of Xi'an University of Science and Technology,2014,(06):656-663.[doi:10.13800/j.cnki.xakjdxxb.2014.0605]
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光纤传感应力检测的相似模拟实验(/HTML)
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西安科技大学学报[ISSN:1672-9315/CN:61-1434/N]

卷:
期数:
2014年06期
页码:
656-663
栏目:
出版日期:
2014-12-08

文章信息/Info

Title:
Similar material model experiment of stress detection by fiber Bragg grating sensor
文章编号:
1672-9315(2014)06-0656-08
作者:
柴 敬12张 亮1曹敬强1杨雷磊1张丽华3
1.西安科技大学 能源学院,陕西 西安 710054;
2.教育部西部矿井开采与灾害防治重点实验室, 陕西 西安 710054;
3.西安科技大学 通信与信息工程学院,陕西 西安 710054
Author(s):
CHAI Jing12ZHANG Liang1CAO Jing-qiang1YANG Lei-lei1ZHANG Li-hua3
1.College of Energy Science and Engineering,Xi'an University of Science and Technology,Xi'an 710054,China;
2.Key Laboratory of Western Mine Exploitation and Hazard Prevention of Ministry of Education,Xi'an 710054,China;
3.College of Communication and Information Engineering,Xi'an University of Science and Technology,Xi'an 710054,China
关键词:
相似模拟 光纤Bragg光栅传感器 应力应变状态 波长漂移
Keywords:
analogy simulation fiber Bragg grating sensor stress-strain condition wave length shift
分类号:
TD 325; TP 212
DOI:
10.13800/j.cnki.xakjdxxb.2014.0605
文献标志码:
A
摘要:
为定量化研究矿山相似材料模型的岩层移动规律,采用光纤Bragg光栅传感器、百分表和光学全站仪等多种测量手段,建立了基于光纤Bragg光栅传感器的模型应力应变检测系统,模拟采场上覆岩层由于采动引起的移动变形过程。实验室搭建3 m×1.15 m×0.2 m的采场上覆岩层移动的相似材料模型,几何相似比1:200,模型中埋入3个不锈钢封装和6个醋酸乙烯封装光纤Bragg光栅传感器,1个陶瓷封装的温度光纤光栅传感器用以温度补偿,模型共架设14个百分表和6条全站仪测线。实验结果表明,光纤传感器对模型开挖过程中的应力状态变化形成了监测,光纤传感器的波长漂移量与相应岩层的垮落形态密切相关; 模型实际岩层运移影响了光纤传感器波长漂移量曲线的变化,在岩块断裂时引起的FBG04的最大波长漂移量为1 504.24 pm; 实验所用的不锈钢封装传感器的平均灵敏度为32.53 pm/mm,醋酸乙烯封装传感器的平均灵敏度为56.32 pm/mm,醋酸乙烯封装的光纤Bragg光栅传感器平均灵敏度是不锈钢封装的1.73倍。
Abstract:
In order to study the movement rules of formation made by similar material models,some measurements like the fiber Bragg grating sensor,the dial gauge and the total station were used to establish the stress and strain measurement system based on the model of the fiber Bragg grating sensor to imitate the movement and deformation process of overlying formation in coal mining face caused by mining.In laboratory,a similar material model about 3 m×1.15 m×0.2 m for coal mining face with overlying formation was built.The geometric similarity ratio was 1:200.In this model,10 fiber Bragg grating sensors were buried.3 of them were covered by stainless steel; 6 of them were covered by vinyl and the last one was covered by ceramic for temperature compensation.Besides,14 dial gauges and 6 total station survey lines were included in the model.The result show that optical fiber sensor model successfully detect the variation of stress state in the process of digging; the wavelength shift of fiber Bragg grating sensor is closely related to the collapsed form of relevant strata; the movement of strata influence the wavelength shift of fiber Bragg grating sensor; the maximum wavelength shift caused by fracture of FBG04 is 1 504.24 pm; the average sensitivity of the sensor which is covered by stainless steel used in the experiment is 32.53 pm/mm,while the average sensitivity of the sensor covered by vinyl is 56.32 pm/mm,therefore,the average sensitivity of the sensors covered by vinyl is 1.73 times the sensors covered by stainless steel.

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备注/Memo

备注/Memo:
收稿日期:2014-09-10 责任编辑:刘 洁
基金项目:国家自然科学基金资助项目(41027002,51174280); 大学生创新创业训练计划项目(201310704001)
通讯作者:柴 敬(1964-),男,宁夏平罗人,教授,博士生导师,E-mail:chaij@xust.edu.cn
更新日期/Last Update: 2014-12-01