分布式光纤感测技术(DFOS)已开始应用于隧道的长距离变形监测,并已显示出其独特的优势。通过感测光纤的网络化布设,可以获得隧道变形的二维和三维信息。本文提出一种基于Open GL的自主编程方法,利用隧道断面和轴线数据进行隧道三维建模,并将DFOS监测数据进行特征数据提取和空间插值,在三维隧道模型上直观显示其变形特征。最后以苏州地铁1号线为例,对该方法进行了检验,证明了其很好的三维显示效果。研究成果对于隧道灾害防治和维护具有重要意义。
Distributed fiber optic sensing( DFOS) technology has been applied to long distance deformation monitoring of tunnel,and shows its unique advantages. DFOS technology can obtain tunnel deformation information by the network layout of the sensing optical fiber. In this paper,an autonomous programming method is presented based on Open GL. It uses the tunnel section and the axial line data to carry on the 3D modeling of the tunnel, and extracts DFOS monitoring feature data with spatial interpolation,so as to display the deformation characteristics on the 3D tunnel model. Finally,taking Suzhou metro line 1 as an example,the method is tested to prove its good 3D display. The research results have important significance for the tunnel disaster prevention and maintenance.