基于光纤光栅传感技术的深井井筒结构健康监测研究

Existing techniques for instrum entation of shaft sturcture have limitations, inlcuding poor reliability , poor anti-electromagnetic interference and not waterproofing. The feasibility of incorporating fiber Bragg grating(FBG) sensing technlogy into health monitoring of over 1000m deep shaft with water burst is discussed. The FBG sinsors have been srccessfully installed in the shaft at the depth of four layers in mine. Then the shaft structres monitoring system with an automatic adn remote configruatinon has been built. The early-stagemonitoring results are obtained and analyze. The temperature ,deformation of shaft structure were obtained.