深圳市龙岗中心城岩溶塌陷光纤传感监测研究

MONITORING SINKHOLE COLLAPSE BY USING OPTICAL FIBER SENSING TECHNIQUE OF LONGGANG CENTRAL TOWN,SHENZHEN CITY

岩溶塌陷具有的突发性、隐蔽性、不确定性,使其监测、预警预报问题一直未解决。通过多年的研发,光纤传感器监测技术已成为当今最为先进的岩土变形现场监测技术,特别是BOTDR技术,它的分布式、长距离、远程实时监控以及光纤耐久性好的特点正好弥补了传统监测技术的不足。目前光纤传感技术在岩溶塌陷(沉陷)灾害的监测上开展工作较少,本次工作主要目的为利用光纤传感技术实时监测岩溶塌陷。

Since sinkhole collapse is unexpected and concealment, it is difficulty to resolve the problems of monitoring and early warning. Through years of research and development, fiber optic sensors monitoring technology has become today＇s most advanced ground deformation monitoring techniques, especially BOTDR technology. Its characteristics of distribution, long-distance, long range real-time monitoring, as well as the fiber durability, are good to make up for the traditional monitoring technology. At present, seldom work has been done on optical fiber sensing technology in the sinkhole collaps （subsidence） monitoring of disasters. The main purpose of this work is to utilize the optical fiber sensing technology on the real-time monitoring of sinkhole collapse.