物理模型试验光纤传感测试方法应用进展

室内模拟试验是岩土力学与工程地质领域科学研究的重要手段之一。光纤传感测试是一种高精度、实时性、分布式和并行式的测试技术,构建物理模型试验光纤传感测试方法,推动了模拟试验技术的进步,为现场工程可以提供更可靠的指导。本文列举了常用模型试验光纤传感测试技术,综述了岩土力学与工程地质在5个方面应用模型试验光纤传感测试的进展,并对光纤传感器的结构形式、温度补偿、传感器标定、布设工艺等应用关键问题进行了总结,探讨了光纤与模型材料变形同步、协调和相容的关系。表明基于光纤传感技术的多尺度、多源信息模型试验研究将成为未来岩土力学与工程室内试验的热点。

APPLICATION ANALYSIS ON METHOD OF PHYSICAL MODEL TEST WITH OPTICAL FIBER SENSING TECHNIQUE

Physical model test is one of the most important means for scientific researching of rock and soil mechanics and engineering geology. Optical fiber sensing(OFS) is a testing technology which possesses the specialty of high accuracy, real-time, distributed and parallel. The establishment of physical model test with OFS method promotes the progress of experimental modelling technique, and provides a more precisely reliable and entirely meticulous scientific instruction for field practicing and construction. This paper lists the most commonly used techniques of physical model test with OFS.Its progress in five main engineering areas of rock mechanics and engineering is reviewed. The key application issues that structural forms and technologies of temperature compensation, optical fiber sensors calibration and layout are analyzed. The correlations among optical fiber, physical model, and different layouts techniques are discussed. The research of multiple sizes and multi-source information model test with OFS will be a hotspot of indoor experimental modelling in rock and soild mechanics and engineering geology.