分布式光纤测温技术在冻结修复工程中的应用

针对采用冻结法进行成井井壁修复工程的特殊性，在进行常规水文孔、测温孔监测的同时，增加新型检测手段，利用分布式光纤测温技术检测每个冻结器的纵向温度，通过数据分析，为指导冻结施工安全顺利进行提供依据。详细介绍了修复工程的概况和分布式光纤测温系统的原理、组成、检测方法及测温光缆结构。给出了现场实测数据，与常规测温孔数据相比，数据量大，能全面、直观地反映冻结壁实际发展状况。系统结构简单，机动灵活，检测方法具有一定的推广价值。

Application of distributed fiber temperature detection technology in freezing restoration project

Aiming at particularity of the case of using freezing method to conduct shaft-forming well wall restoration project,at the same time of monitoring the conventional hydrological hole and thermometer hole,new means of detection are added,and distributed fiber temperature detection technology is used to check the temperature of each longitudinal freezer. By data analysis,provide basis for guiding the freeze construction being carried out safely and smoothly. The general situation of restoration project,the principle,composition,detection method and temperature measuring optical cable structure of the distributed fiber temperature detection system are introduced in detail. Field measured data is given,which has large quantities of datas and can reflect the actual development status of freezing wall comprehensively and intuitively compared with the traditional thermometer hole data. System structure is simple and flexible,also the detection method has certain promotional value.