光纤光栅传感技术在基坑监测中的应用

Application of Fiber Grating Sensing Technology in Monitoring of Foundation Pit

一直以来,如何实现基坑的自动化监测是基坑监测的热门研究方向之一,而传感器的选择是其中的重要一环。目前,应用在自动化监测当中的传感器种类有很多,但由于传感器的类型不统一,导致各类型监测设备的精度指标、监测参数不尽相同。光纤光栅传感器作为新型传感设备的出现,或许可以解决此项问题。根据光纤光栅自身的特点,结合深圳市某基坑的部分监测项目,在利用光纤光栅传感技术实施基坑监测上做了一定的尝试,尤其是光纤光栅传感器在进行设备安装的过程中总结出来的一些经验,为后续拟采用光纤光栅传感器进行自动化监测的项目提供一些参考。

How to realize the automatic monitoring of foundation pit has been one of the popular research directions of foundation pit monitoring, and the selection of sensors is one of the important parts. At present,there are many kinds of sensors applied in the automatic monitoring, but due to the type of sensor is not uniform,which leads to the accuracy index and monitoring parameters of each type of monitoring equipment is not the same. The emergence of fiber grating sensor as a new type of sensing equipment may solve this problem. According to the characteristics of fiber grating itself, combined with a part of the monitoring project of a foundation pit in Shenzhen, the use of fiber grating sensing technology to implement the pit monitoring has made some attempts.Especially in the fiber grating sensor in the process of installation of equipment summed up some of the experience can provide some reference for the subsequent proposed use of fiber grating sensor for automated monitoring projects.