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http://dx.doi.org/10.9711/KTAJ.2021.23.4.265

A study on the clogging of shield TBM cutterhead opening area according to the characteristics of cohesive soil content  

Bang, Gyu-Min (DL E&C)
Kim, Yeon-Deok (Technology Research Institute, Yookwang Construction)
Hwang, Beoung-Hyeon (Dept. of Civil Engineering, Hoseo University)
Cho, Sung-Woo (Dept. of Civil Engineering, Hoseo University)
Kim, Sang-Hwan (Dept. of Civil Engineering, Hoseo University)
Publication Information
Journal of Korean Tunnelling and Underground Space Association / v.23, no.4, 2021 , pp. 265-280 More about this Journal
Abstract
Population density due to urbanization is making people interested in underground space development and much interest in TBM construction with low vibration and noise. This led to a lot of research on TBM. However, research on the characteristics of the cutterhead opening of the TBM equipment being occluded under the ground conditions under which it is excavated is insufficient. Accordingly, a study was conducted to investigate clogging of the cutterhead opening during the shield TBM rolling. To identify the clogging of cutterhead openings in SHIELD TBM equipment, the reduced model experiment was divided into clay rate (10%, 30%, 50%, 60%), cutterhead opening rate (30%, 50%, 60%), and cutterhead rotation direction (one-way, two-way) and rotational speed (3 RPM) and conducted in 36 cases. Results of scale model test on shield TBM clogging, it was analyzed that the ground condition containing clay soil increased the clogging effect in both directions than the unidirectional rotation, and that the lower the rotational speed of the cutterhead, the less the clogging effect. Accordingly, the direction of cutterhead rotation, rotational speed and opening rate are calculated by taking into account ground conditions during ground excavation, the clogging effect can be reduced. It is believed to be effective in saving air as the clogging effect is reduced. Therefore, this study is expected to be an important material for domestic use of shield TBM.
Keywords
Shield TBM; Clogging phenomenon; Cutterhead opening rate; Cohesive soil rate;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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1 KS F 2303 (2015), Standard test method for liquid limit and plastic limit of soils, National Institute of Technology and Standards, Korea.
2 KS F 2312 (2016), Standard test method for soil compaction, National Institute of Technology and Standards, Korea.
3 Thewes, M., Burger, W. (2005), "Clogging of TBM drives in clay - identification and mitigation of risks", Underground Space, pp. 737-742.
4 Chang, S.H., Choi, S.W., Park, Y.T., Lee, G.P., Bae, G.J. (2013), "Experimental evaluation of the effects of cutting ring shape on cutter acting forces in a hard rock", Journal of Korean Tunnelling and Underground Space Association, Vol. 15, No. 3, pp. 225-235.   DOI
5 Cho, J.W., Yu, S.H., Jeon, S.W., Chang, S.H. (2008), "Numerical study on rock fragmentation by TBM disc cutter", Journal of Korean Tunnelling and Underground Space Association, Vol. 10, No. 2, pp. 139-152.
6 Hwang, B.H., Kim, S.H., Lee, K.H., An, J.K., Cho, S.W., Kim, Y.D. (2020), "A basic study on the mixing bar interaction efficiency in shield TBM chamber", Journal of Korean Tunnelling and Underground Space Association, Vol. 22, No. 1, pp. 91-105.   DOI
7 Kang, E.M., Kim, Y.M., Hwang, I.J., Kim, S.H. (2015), "A study on the damage of cutter bit due to the rotation speed of shield TBM cutter head in mixed ground", Journal of Korean Tunnelling and Underground Space Association, Vol. 17, No. 3, pp. 403-413.   DOI
8 Kong, M.T., Kim, Y.D., Lee, K.H., Hwang, B.H., An, J.K., Kim, S.H. (2019), "Development of shield-TBM scale model system for excavation of curved section", Journal of Korean Tunnelling and Underground Space Association, Vol. 21, No. 6, pp. 849-860.   DOI
9 Sugimoto, M., Sramoon, A., Konishi, S., Sato, Y. (2007), "Simulation of shield tunneling behavior along a curved alignment in a multilayered ground", Journal of Geotechnical and Geoenvironmental Engineering, Vol. 133, No. 6, pp. 684-694.   DOI
10 Hollmann, F.S., Thewes, M. (2013), "Assessment method for clay clogging and disintegration of fines in mechanised tunneling", Tunnelling and Underground space Technology, Vol. 37, pp. 96-106.   DOI