BOTDA在岩层移动相似材料模拟试验中的应用  

Application of brillouin optical time domain analysis in strata movement similar material simulation experiment

作　　者：柴敬[1,2] 王正帅[1,3] 袁强[1] 李毅[1,2] 王帅[1] 李廷博 

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及灾害防治重点实验室,陕西西安710054 [3]中国煤炭科工集团重庆研究院有限公司,重庆400037

出　　处：《煤炭科学技术》2015年第1期1-4,共4页Coal Science and Technology

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

摘　　要：为了研究岩层移动变形相似材料模拟试验过程,采用布里渊光时域分析技术(BOTDA)对相似材料模拟试验进行分布式应变测量,在3 m平面应力模型内埋设2根传感光纤,对应位置布置百分表5个,对比分析岩层移动变形过程中的布里渊频移变化。试验结果表明:BOTDA分布式光纤传感技术实现了相似材料模拟试验的分布式应变测量,不仅能很好地测量光纤沿线的岩层垮落情况,而且能够感知和反映某一点处岩层的移动变形特征,为相似材料模拟试验提供了一种全新的测试方法,对相似材料模拟试验测试技术的发展有积极作用。In order to study the process of strata movement similar material simulation experiment, Brillouin optical time domain analysis （BOTDA） technology was used to measure strain of similar material simulation.The two optical fibers were embedded in 3 m plane stress simulation and 5 dial gage were installed on the respective position, comparing analysis of Brillouin frequency shift change of strata move- ment and deformation process. The results showed that BOTDA distributed optical fiber sensing technology could realize the distributed strain measurement of similar material simulation, not only could accurately measure the strata collapse state of the fiber along, but also could sense and reflect the movement and deformation characteristics of strata at some point.This research provided a new testing method for similar material simulation experiment, and had a positive effect on the development of similar material simulation testing technology.

关 键 词：相似材料模拟试验 布里渊光时域分析技术 光纤传感 岩层移动 

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]