岩土与地质工程中分布式光纤传感技术研究进展

Advance of the distributed optical fiber technology in geotechnical and geological engineering

在岩土与地质工程监测领域,分布式光纤传感技术作为一种新型智能监测技术,与传统的电阻式、电感式和振弦式传感器等工程监测技术相比,其分布式、长距离、高精度、抗干扰等优势明显,成为近年来工程智能监测领域的研究热点之一.介绍了分布式光纤传感技术的分类,总结了近几年国内外分布式光纤传感技术在混凝土结构健康、桩基工程、基坑、边坡、温度场、土体变形等方面监测的最新工程实践和研究成果,以及该技术的工程布设和温度补偿方法、新型传感器与监测系统研发,并展望了岩土与地质工程分布式光纤传感技术将来的发展方向。

The distributed optical fiber sensing technology, as a new intelligent monitoring technology, has many advantages such as being distributed, long distance, high precision, and anti-interference, comparing with the traditional methods such as resistance sensor, inductance sensor, vibrating wire sensor in the field of geotechnical and geological engineering monitoring. In recent years, it is one of the hot research topics in the field of engineering intelligent monitoring. This paper describes the classification of the distributed optical fiber sensing technology at first, then sums up the latest achievements of the distributed optical fiber sensing technology used in the monitoring of concrete structure health, foundations, excavation, slope, temperature field and soil deformation, in the technical engineering layout and temperature compensation methods, and in the new sensors and monitoring systems at home and abroad, and finally points out the development direction of the distributed optical fiber sensing technology in the future.