相似物理模型变形的光纤光栅传感器检测分析  

Analysis on FBG sensor detection for similar physical model deformation

作　　者：柴敬[1,2] 王正帅[1] 袁强[1] 李毅[1,2] 郝雷[1] 苏普正[1,2] 

机构地区：[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

出　　处：《西安科技大学学报》2013年第6期633-639,共7页Journal of Xi’an University of Science and Technology

基　　金：国家自然科学基金资助项目(41027002;51174280);高等学校博士学科点专项科研基金项目(20126121110003)

摘　　要：为了定量化研究相似物理模型实验岩层变形过程,在3m平面应力模型上,安装光纤光栅传感器5个,通过对埋设在相似物理模型中的光纤光栅传感器的采集数据分析,研究了物理模型在微小变形和宏观移动过程中的光纤光栅传感器灵敏度,并与对应位置的百分表数据进行对比。实验结果表明,物理模型岩层变形量小于4.985 mm时,光纤光栅传感器能够准确反映岩层的移动变形情况,两者呈线性变化;变形量大于4.985 mm时,光纤光栅传感器的灵敏度会大幅降低,但其仍然能反映岩层的移动变形状态,研究对岩层变形测试技术的发展有积极作用。In order to quantitatively study the strata deformation in similar physical model,5 FBG sensors are installed in a 3m plane stress model, and the FBG sensors were embedded in the physical model. Based on the analysis of the FBG sensors monitoring results and the comparison with the dial gage data of corresponding position, the sensitivity of the FBG sensors in the physical model small deformation and macroscopic movement progress was studied. The results show that when the strata deformation is less than 4. 985mm, the FBG sensors can accurately reflect the movement and deformation of strata, and shows good linear relationship ;When the strata deformation exceeds 4. 985mm, the sensitivity of the FBG sensors will be significantly reduced, but still reflects the movement and deformation state of strata. This research has a positive effect on the development of the strata deformation testing technology.

关 键 词：相似物理模型 光纤光栅传感器 变形 灵敏度 

分 类 号：TD325[矿业工程—矿井建设] TP212[自动化与计算机技术—检测技术与自动化装置]