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《Journal of China Coal Society》 2010-02
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The development of fiber optic Bragg grating sensors and their applications to the mine water-inrush model test

FENG Xian-da1,LI Shu-chen1,LI Shu-cai1,WANG Jing2,LI Li-ping1,YUAN Chao1 ( 1. Geotechnical and Structural Engineering Research Center,Shandong University,Jinan 250061,China; 2. School of Control Science and Engineering,Shandong University,Jinan 250061,China)  
Fiber Bragg grating displacement,stress,seepage pressure and temperature sensors were developed based on Fiber Bragg Grating ( FBG) technology. These sensors have the characters of small size,high precision,stable performance and reliable data-collecting which completely satisfy the need of the real-time date-collecting under the condition of water inrush. The sensors were pre-embedded in the key positions of the model,and the real-time monitoring for multi-field information was successfully realized through the entire process of water inrush. The experimental results not only reveal the precursory characteristics of mine water inrush,but also verify the validity and feasibility of these opti-cal sensors in the water-inrush model test.
【Fund】: 国家自然科学基金重点项目(50539080);; 国家重点基础研究发展计划(973)基金资助项目(2007CB209407);; 国家自然科学基金设备专项资助项目(50727904)
【CateGory Index】: TD745
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