A study on the wear and replacement characteristics of the disc cutter through data analysis of the large diameter slurry shield TBM field

Jinsoo Park; Ki-Il Song

doi:10.9711/KTAJ.2022.24.1.057

All Issue

2022 Vol.24, Issue 1 Preview Page Next Page

Research Paper

A study on the wear and replacement characteristics of the disc cutter through data analysis of the large diameter slurry shield TBM field 대구경 이수식 쉴드TBM 현장의 데이터 분석을 통한 디스크커터의 마모 및 교체 특성 연구

31 January 2022. pp. 57-78

PDF XML

Abstract

The disc cutter and cutterbit, which are the most important factors to increase the excavation efficiency of TBM, are key factors in the design and construction of the cutter head. The arrangement, spacing, number, size, and material of disc cutters suitable for the ground conditions determine the success or failure of TBM construction. The disc cutter, which is a representative consumable part in TBM construction, can cause enormous disruption to the construction cost as well as the construction cost unless accurate prediction of wear and replacement cycle is accompanied. Therefore, in this study, the method of calculating the replacement cycle of the disc cutter calculated at the time of design for the slurry shield TBM field, and the depth of wear and replacement location of the disc cutter that occurred during actual construction were compared by analyzing the field data. For a quantitative comparison, weathered soil/weathered rock, soft rock, and hard rock were classified according to the ground in the section showing constant excavation data, and the trajectory of circle was different depending on the location of the disc cutter, so it was compared and analyzed.

Keywords

Slurry shield TBM

Disc cutter

Wear

Wear depth

Replacement

TBM의 굴착효율을 높이는 가장 중요한 인자인 디스크커터와 커터비트는 커터헤드 설계 및 시공 시 핵심요소로 지반조건에 맞는 디스크커터의 배치, 간격, 개수, 크기, 재질 등은 TBM 공사의 성패를 좌우한다. 또한, 디스크커터는 대표적인 소모성 부품으로 교체횟수에 대한 정확한 예측이 수반되지 않으면, 공사비는 물론 공사에 막대한 지장을 초래 할 수 있다. 이에 본 연구에서는 대구경 이수식 쉴드TBM 현장에 대하여 설계 시 산정된 디스크커터의 교체횟수와 실제 시공 시 발생한 디스크커터의 마모깊이 및 교체위치에 대하여 현장데이터를 분석하여 비교 ‧ 연구하였다. 정량적인 비교를 위하여 일정한 굴진데이터를 나타내는 구간에서 지반에 따라 풍화토/풍화암, 연암, 경암으로 나누어 구분하였으며, 디스크커터의 위치에 따라 동심원의 궤적이 다르므로 위치에 따라 비교분석 하였다.

키워드

이수식 쉴드TBM

디스크커터

마모율

마모깊이

교체횟수

References

Bae, G.J., Choi, S.W., Chang, S.H., Lee, G.P., Song, B.C., Kim, K.B. (2015), “Analysis of inner parts in the disc cutters applied to the field tests”, Journal of Korean Tunnelling and Underground Space Association, Vol. 17, No. 4, pp. 473-485. 10.9711/KTAJ.2015.17.4.473

Ellescosta, P., Kasling, H., Thuro, K. (2018), “Tool wear in TBM hard rock drilling - backgrounds and special phenomena”, Geomechanics and Tunnelling, Vol. 11, No. 2, pp. 142-148. 10.1002/geot.201800006

Korean Tunnelling and Underground Space Association (2008), Tunnel Mechanization Construction Design, CIR, Seoul, pp. 270-303.

Korean Tunnelling and Underground Space Association (2017), Shield TBM tunnel and ground stability review study, National Railroad Corporation, pp. 267-277.

Ren, D.J., Shen, J.S., Chai, J.C., Zhou, A. (2018), “Analysis of disc cutter failure in shield tunnelling using 3D circular cutting theory”, Engineering Failure Analysis, Vol. 90, pp. 23-35. 10.1016/j.engfailanal.2018.02.015

Samhwan Enterprise (2015), Wonju Gangneung railway tunnel detailed design report, drawings, quantity calculations, Samhwan Enterprise, pp. 488-490, 492-493.

Wang, L., Li, H., Zhao, X., Zhang, Q. (2017), “Development of a prediction model for the wear evolution of disc cutters on rock TBM cutterhead”, Tunnelling and Underground Space Technology, Vol. 67, pp. 147-157. 10.1016/j.tust.2017.05.003

Wen, S., Huang, P. (2018), “Principles of tribology”, Fifth printing, Tsinghua University Press, Beijing, China, pp. 108-110.

Wu, H.N., Shen, S.L., Yang, J. (2017), “Identification of tunnel settlement caused by land subsidence in soft deposit of Shanghai”, Journal of Performance of Constructed Facilities, Vol. 31, No. 6, 04017092-1-2. 10.1061/(ASCE)CF.1943-5509.0001082

Li, Y., Di, H., Yao, Q., Fu, L., Zhou, S. (2020), “Prediction model for disc cutter wear of tunnel boring machines in sandy cobble strata”, KSCE Journal of Civil Engineering, Vol. 24, No. 3, pp. 1010-1019. 10.1007/s12205-020-1631-8

Zhaohuang, Z. (2007), “Study on the abrasion of disc cutters on full face rock tunnel boring machine”, Modern Tunnelling Technology, No. 6, pp. 32-36.

Information

Publisher :Korean Tunneling and Underground Space Association
Publisher(Ko) :한국터널지하공간학회
Journal Title :Journal of Korean Tunnelling and Underground Space Association
Journal Title(Ko) :한국터널지하공간학회 논문집
Volume : 24
No :1
Pages :57-78
Received Date : 2021-09-11
Revised Date : 2021-10-13
Accepted Date : 2021-10-13
DOI :https://doi.org/10.9711/KTAJ.2022.24.1.057

Journal of Korean Tunnelling and Underground Space Association ISSN:2233-8292(Print) 2287-4747(Online) 한국터널지하공간학회 논문집

All Issue