터널과지하공간 (Tunnel and Underground Space)

  • 제33권6호
  • /
  • Pages.534-546
  • /
  • 2023
  • /
  • 1225-1275(pISSN)
  • /
  • 2287-1748(eISSN)
한국암반공학회 (Korean Society for Rock Mechanics and Rock Engineering)
권호 표지
DOI QR코드

DOI QR Code

TBM 디스크커터의 마모량 측정을 위한 와전류센서의 적용 연구

Application of Eddy Current Sensor for Measurement of TBM Disc Cutter Wear

  • 박민성 (부경대학교 에너지자원공학과) ;
  • 주민석 (부경대학교 에너지자원공학과) ;
  • 김정주 (한국전력공사 전력연구원 송변전연구소) ;
  • 정호영 (부경대학교 에너지자원공학과)
  • Min-Sung Park (Department of Energy Resources Engineering, Pukyong National University) ;
  • Min-Seok Ju (Department of Energy Resources Engineering, Pukyong National University) ;
  • Jung-Joo Kim (Transmission & Substation Laboratory, KEPCO Research Institute, KEPCO) ;
  • Hoyoung Jeong (Department of Energy Resources Engineering, Pukyong National University)
  • 투고 : 2023.12.05
  • 심사 : 2023.12.18
  • 발행 : 2023.12.31
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

디스크 커터는 과다하게 마모되거나 손상되는 경우 회전이 불가능하거나 효율적으로 암석을 절삭하는 것이 불가능하다. 따라서 디스크 커터의 마모정도에 따라 교체주기를 적절하게 관리하는 것이 매우 중요하다. 일반적으로 디스크 커터의 교체주기를 결정하기 위해서 인력에 의한 정기적인 계측을 수행한다. 이러한 인력에 의한 디스크 커터의 계측은 작업자의 안전과 관련한 이슈가 있고, 부정확한 계측결과를 가져올 수도 있다. 이러한 이유로 해외에서는 디스크 커터의 마모정도를 센서를 통해 실시간으로 측정하기 위한 기술의 개발이 이루어지고 있으며, 디스크 커터의 마모량 계측에는 초음파 센서, 와전류 센서, 자기 센서 등이 활용된다. 본 연구에서는 TBM 디스크 커터의 마모량을 실시간으로 계측하기 위한 와전류 센서의 적용성을 평가하였다. 와전류 센서의 거리 계측정확도를 실험실 모사시험을 통해 평가하였고, 특히 디스크 커터가 노출될 수 있는 챔버 내 여러 환경조건에서의 계측정확도를 비교하였다. 최종적으로는 17인치 디스크 커터를 활용하여 와전류 센서의 계측 정확도를 검증하였다.

If the disc cutter is excessively worn or damaged, it becomes incapable of rotating and efficiently cutting rockmass. Therefore, it is important to appropriately manage the replacement cycle of the disc cutter based on its degree of wear. In general, the replacement cycle is determined based on the results of manual inspection. However, the manual measurements has issues related to worker safety and may lead to inaccurate measurement results. For these reasons, some foreign countries are developing the real-time measurement system of disc cutter wear by using different sensors. The ultrasonic sensors, eddy current sensors, magnetic sensors, and others are utilized for measuring the wear amount of disc cutters. In this study, the applicability of eddy current sensors for real-time measurement of wear amount in TBM disc cutters was evaluated. The distance measurement accuracy of the eddy current sensor was assessed through laboratory tests. In particular, the accuracy of eddy-current sensor was evaluated in various environmental conditions within the cutterhead chamber. In addition, the measurement accuracy of the eddy current sensor was validated using a 17-inch disc cutter.

키워드

과제정보

본 연구는 한국전력공사 자체연구개발 과제(R22SA01) '전력구 공사 안전확보를 위한 디스크커터 마모측정 및 수명예측 기술 개발'의 지원으로 수행되었습니다. 연구지원에 감사드립니다.

참고문헌

  1. Barzegari, G., Khodayari, J., and Rostami, J., 2021, Evaluation of TBM cutter wear in Naghadeh water conveyance tunnel and developing a new prediction model, Rock Mechanics and Rock Engineering, 54, 6281-6297.  https://doi.org/10.1007/s00603-021-02640-7
  2. Bruland, A., 1998, Hard rock tunnel boring, Ph.D. Dissertation, Norwegian University of Science and Technology. 
  3. Edelmann, T., 2013, Monitoring of cutting tools in TBM's, In: 2013 Tunneling research in Leoban (Schwanau and Bochum Workshop). 
  4. Farrokh, E. and Kim, D.Y., 2018, A discussion on hard rock TBM cutter wear and cutterhead intervention interval length evaluation, Tunnelling and Underground Space Technology, 81, 336-357  https://doi.org/10.1016/j.tust.2018.07.017
  5. Gehring, K., 1995, Prognosis of advance rates and wear for underground mechanized excavations (in German), Felsbau, 13(6), 439-448 
  6. Gong, Q., Wu, F., Wang, D., Qiu, H., and Yin, L., 2021, Development and Application of Cutterhead Working Status Monitoring System for Shield TBM Tunnelling, Rock Mechanics and Rock Engineering, 54, 1731-1753.  https://doi.org/10.1007/s00603-021-02380-8
  7. Guo, J., Wang, Y., Liu, J., and Niu, J., 2013, The Research and Design of A New Shield Cutter Wear Detection System, Advanced Materials Research, 711, 381-384.  https://doi.org/10.4028/www.scientific.net/AMR.711.381
  8. Kang, T.H., Choi, S.W., Lee, C., and Chang, S.H., 2022, A study on the prediction of disc cutter wear using TBM data and machine learning algorithm, Tunnel and Underground Space, 32(6), 502-517.  https://doi.org/10.7474/TUS.2022.32.6.502
  9. Karami, M., Zare, S., and Rostami, J., 2020, Tracking of disc cutter wear in TBM tunneling: a case study of Kerman water conveyance tunnel, Bulletin of Engineering Geology and the Environment, 80, 201-219.  https://doi.org/10.1007/s10064-020-01931-7
  10. Kim, Y., Hong, J., and Kim, B., 2020, Performance comparison of machine learning classification methods for decision of disc cutter replacement of shield TBM, Journal of Korean Tunnelling and Underground Space Association, 22(5), 575-589.  https://doi.org/10.9711/KTAJ.2020.22.5.575
  11. Lan, H., Xia, Y., Ji, Z., Fu, J., and Miao, B., 2019, Online monitoring device of disc cutter wear - Design and field test, Tunnelling and Underground Space Technology, 89, 284-294.  https://doi.org/10.1016/j.tust.2019.04.010
  12. Li, D., Sun, Z., Ren, D., and Sun, W., 2016, Study of application of Eddy-current Sensor to Disc-cutter Wear Monitoring System of Shield Machines, Tunnel Construction, 36(6), 766-770. (In
  13. Liu, Q., Liu, J., Pan, Y., Zhang, X., Peng, X., Gong, Q., and Du, L., 2017, A wear rule and cutter life prediction model of a 20-in. TBM cutter for granite: a case study of a water conveyance tunnel in China, Rock Mechanics and Rock Engineering, 50, 1303-1320.  https://doi.org/10.1007/s00603-017-1176-4
  14. Park, M.S., Ju, M.S., Cho, M.S., Lee, J., Kim, J.J., and Jeong, H., 2022, Introduction to Research Trend of Real-Time Measurement for Wear of TBM Disc Cutter, Tunnel and Underground Space, 32(6), 478-490.  https://doi.org/10.7474/TUS.2022.32.6.478
  15. Rostami, J., Ozdemir, L., Bruland, A., and Dahl, F., 2005, Review of issues related to Cerchar abrasivity testing and their implications on investigations and cutter cost estimates, Proceedings of the Rapid Excavation and Tunneling Conference (RETC), Seattle, U.S.A., 738-751. 
  16. Su, W., Li, X., Jin, D., Yang, Y., Qin, R., and Wang, X., 2020, Analysis and prediction of TBM disc cutter wear when tunneling in hard rock strata: A case study of a metro tunnel excavation in Shenzhen, China, Wear, 446-447, 203190. 
  17. Sun, Z., Li, D., and Zhang, J., 2016, Wireless real-time disc cutter wear monitoring system for composite shield machine, Tunnel Construction, 36(4), 485-489. (In
  18. Wang, F., Men, C.H., Kong, X.W., and Meng, L.X., 2019, Optimum design and application research of eddy current sensor for measurement of TBM disc cutter wear, Sensors, 19, 4230. 
  19. Zhang, X.B., Liu, Q.S., and Zhang, J.M., 2017, Real-time monitoring technology for wear of cutters and monitoring analysis of cutterhead vibration of TBM, Tunnel Construction, 37(3), 380-385. (In Chinese)