光纤应变分布传感的工程实用情况及其在水工领域的应用前景

Application of optical fiber distributed strain sensing and its future in hydraulic engineering

BOTDA/R分布式光纤监测技术弥补了传统仪器在布点上的不足,真正实现了从预判风险位置到实际发现危险的突破,有助于全面、有效地对工程运行安全状态进行评估,及时诊断损伤的位置和程度,在事故发生前进行预警。目前该技术已应用于一些大型基础设施的监测中,借鉴其成功经验,可在引水隧洞、调压井、蜗壳结构、坝体等水工结构中得到推广应用。

Optical fiber distributed strain sensing （OFDSS） based on BOTDA/R is a supplementary method to traditional sensors. This new monitoring technique provides a comprehensive and efficient approach for structure health checkup and projects operation state evaluation, which helps diagnose the location and degree of defects timely and then warn before di- saster. OFDSS has been used successfully in some large infrastructures and is very promising for hydraulic structure moni- toring such as diversion tunnel, surge chamber, spiral case, dam body, etc.