钻孔灌注桩位移BOTDR分布式光纤监测技术

Monitoring Technology of BOTDR Distributed Optical Fiber:Case Study on Displacement of Bored Pile

为了解决常规监测均为点式,成活率低,实时、并行和自动化监测程度低,缺少长距离和大面积的监测技术,监测系统的集成化程度不高等不足,采用布里渊光时域反射技术(BOTDR)实现对被监测对象的实时、长距离和分布式的监测,验证了该技术在钻孔灌注桩位移监测上的可行性,并具备分布式、不需要回路、长距离、耐久性好等优点。

The routine monitoring have disadvantages,such as point type,low quality,low robotization,short monitoring distance,small monitoring area and low integration.BOTDR real time,long distance and distributed monitoring technology is used.The feasibility of the mentioned technology is proved.