【摘要】 本文介绍了分布式光纤温度传感技术渗漏监测的工作原理;对试验光纤进行了温度性能标定,确定了DTS激光器的预热时间;在空气、水、含水量8.64%松散砂土和含水量10.83%松散砂土中对铠装光缆进行加热,从介质导热性能方面分析了光纤加热温升过程中剧烈变化段斜率—加热功率关系、渐变段温升—加热功率关系和渐变段斜率—加热功率关系,说明了分布式光纤温度传感系统渗漏定量监测的可行性;讨论了实际工程中分布式光纤温度传感系统渗漏监测提高空间分辨率的光纤合理布置方式。更多还原

【Abstract】 This paper introduced the working principle of distributed optical fiber temperature sensing technology leakage monitoring.Carried out optical fiber temperature calibration,determined the DTS laser preheating time.Heated the armored cable embedded in the air,water,8.64% water content loose sand and 10.83% water content loose sand.Analyzed violent changed section slope-heating power relation,gradual changed temperature rise-heating power relation and gradual changed slopeheating power relation from medium heat conduction performance.Illustrated the feasibility of quantitative monitoring leakage of distributed optical fiber temperature sensing.Presented the reasonable layout of optical fiber in the practical engineering to improve the spatial resolution of distributed optical fiber temperature sensing leakage monitoring.更多还原