Xuping Zhang, Guangnan Zhou, Haoran Wang, Jin Wang, Shichao Liu, Dao Zhang, Shisong Zhao, Feng Wang, Fei Xiong, Yixin Zhang. Research Progress of Broken Wire Monitoring of Prestressed Concrete Cylinder Pipe Based on Distributed Optical Fiber Acoustic Sensing[J]. Acta Optica Sinica, 2024, 44(1): 0106006
- Acta Optica Sinica
- Vol. 44, Issue 1, 0106006 (2024)
![Photograph of burst pipe accident scene[9]](/richHtml/gxxb/2024/44/1/0106006/img_01.jpg)
Fig. 1. Photograph of burst pipe accident scene[9]
Fig. 2. Structure diagram of PCCP
Fig. 3. Failure process of PCCP
Fig. 4. Manual echo detection method. (a) Schematic diagram; (b) picture of site operation
Fig. 5. Electromagnetic detection method[32]. (a) Schematic diagram; (b) picture of equipment
Fig. 6. Acoustic monitoring method[45]. (a) Schematic diagram; (b) picture of sensor
Fig. 7. Schematic diagram of PCCP broken wire monitoring technology based on DAS
Fig. 8. Schematic diagram of Ф-OTDR system
Fig. 9. Schematic diagrams of (a) white light FOI system and (b) dual MZI system
Fig. 10. Schematic diagram of PCCP broken wire monitoring system based on converged DAS
Fig. 11. Schematic diagram of optical cable layout through butterfly valve
Fig. 12. Schematic diagram of iDFS system
Fig. 13. Main interface of prewarning platform software of iDFS system
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