山体破裂失稳早期预测预报光纤传感器技术研究

山体破坏和发展过程可以看作为裂纹扩展的过程,为了解决山体微裂缝变形动态监测问题,研究了一种薄盒式岩体裂缝光纤传感器,文中给出了其结构设计,并对该薄盒式岩体裂缝光纤传感器的性能进行了位移和压力两项室内试验研究,同时还对相应的二次仪表进行了研究与试验,结果表明：所研究的薄盒式岩体裂缝光纤传感器,具有可靠、实用和高灵敏度等特点,对于山体或其它裂缝工程体（如水坝）的变形发展、失稳的机理研究和早期预报,将是一种良好的传感监测设备,具有较好的工程应用价值。

Optical fiber sensing technology for real-time forecast of the rock mass failure in a mountain area

The development of mountain mass failure can be regarded as the process of crack expansion which can be measured through real-time monitoring. For this purpose, a thin cassette optical fiber rock mass crack gauge was developed. The design was given in this paper, and its performance on displacement and pressure monitoring was experimented in the lab. Experiment results indicated that the thin cassette optical fiber rock mass crack gauge was reliable, practical and highly sensitive. The thin cassette optical fiber rock mass crack gauge is a good sensing monitoring equipment for research and early forecast on the deformation development and damage mechanism of mountain mass (or other engineering mass, such us the dam) . It has good engineering application value in the field of geotechnical engineering.