摘要
在地铁施工过程中由于隧道形变而引发的安全事故问题随着地铁的大量兴建而日益凸显,因此,需要对地铁隧道的形变情况进行及时有效的监测。文中提出利用相干光时域反射(COTDR)技术对隧道顶部形变进行探测,并通过实验证明方案的可行性。结果表明,COTDR技术在准确探测形变的同时,兼具布设灵活、室外无源、监测距离长等优势,具有良好的工程应用价值。
The construction accidents caused by metro tunnel deformation have become more and more obvious with the development of the subway.Therefore,it is necessary to detect the deformation condition of metro tunnel timely and effectively.In this article,Coherent Optical Time-Domain Reflectometer（COTDR）technology is applied to detect the deformation of tunnel roof.Experimental results have demonstrated the feasibility of the method.Results indicate that,COTDR technology behaves well on deformation monitoring.Meanwhile,it has advantage of convenient setting,outdoor passive and long distance detection,being of great value in engineering application.
出处
《交通科技》
2016年第6期55-57,共3页
Transportation Science & Technology
