光纤传感技术未来地震监测的发展方向

Abstract

Abstract: Optical fiber sensor is a novel method for earthquake precursor monitoring with many advantages, such as high-precision, anti-electromagnetic interference, no zero drift, the simplicity of establishing network and the flexibility of implementing long distance transmission. Optical fiber sensor can solve the intrinsic defect of electrical measuring instrument for detecting earthquake precursor. The sensing principle and characteristics of several kind of common optical fiber sensor is introduced. The research progress of optical fiber sensor in the applications of the crustal deformation observation and seismic wave detection is summarized. And the existing problems need to be solved is proposed. We developed a set of comprehensive drilling earthquake observation equipment based on optical fiber sensor, which can detect crustal deformation, seismic wave and earth temperature. Field experiments show that the optical fiber comprehensive drilling earthquake observation equipment adapts to the performance requirements of resistance to environmental interference ability, measurement accuracy, stability and so on, and have good application prospects.

Key words: Optical fiber sensor, Seismic precursor observation, Optical fiber comprehensive drilling earthquake observation equipment

CLC Number:

P315.7

LIU Wen-yi, ZHANG Wen-tao, LI Li, HUANG Wen-zhu, LI Fang. Optical Fiber Sensory Technology: Future Direction for Earthquake Precursor Monitoring[J]. EARTHQUAKE, 2012, 32(4): 92-102.

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Optical Fiber Sensory Technology: Future Direction for Earthquake Precursor Monitoring

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