摘要
根据光纤光栅传感原理研制了一种新型的顶板离层监测系统,基于光波导理论和材料力学原理推导了光纤光栅波长与位移之间的响应关系。试验结果表明:该系统的位移响应灵敏度为0.012 8 nm/mm.光纤光栅离层在线监测系统能够实时准确地显示、存储巷道顶板离层状况,具有实现预警和报警功能。为巷道支护质量的长期在线监测提供了一种有效的手段,应用前景广阔。
A new roof separation monitoring system based fiber Bragg grating was fabricated. Based on the theory of optical waveguide and material mechanics, the relationship between wavelength and displacement was formulized. The experimental results show that the displacement sensitivity of this system was 0. 012 8 nm/mm. The fiber Bragg grating separation on-line monitoring system can real-time accurately display, storage of roadway roof separation conditions, has the implementation of early warning and alarm function. It provides an effective means for long-term online monitoring of anchor support quality, and it has wide application prospect.
出处
《仪表技术与传感器》
CSCD
北大核心
2013年第2期68-69,72,共3页
Instrument Technique and Sensor
基金
国家高技术研究发展计划(863计划)(2012AA062101)
江苏省"青蓝工程"项目
国家自然科学基金项目(50504014)
关键词
光纤布拉格光栅传感
离层仪
在线监测
巷道支护
fiber Bragg grating sensing technology
roof separation instrument
online monitoring
roadway supporting
