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http://dx.doi.org/10.12814/jkgss.2017.16.4.163

Numerical Study of Face Plate-Type EPB Shield TBM by Discrete Element Method  

Lee, Chulho (Geotechnical Engineering Research Institute, Korea Institute of Civil Engineering and Building Technology)
Chang, Soo-Ho (Geotechnical Engineering Research Institute, Korea Institute of Civil Engineering and Building Technology)
Choi, Soon-Wook (Geotechnical Engineering Research Institute, Korea Institute of Civil Engineering and Building Technology)
Park, Byungkwan (Smart City & Construction Engineering, University of Science and Technology)
Kang, Tae-Ho (Geotechnical Engineering Research Institute, Korea Institute of Civil Engineering and Building Technology)
Sim, Jung Kil (Next Engineering & Service)
Publication Information
Journal of the Korean Geosynthetics Society / v.16, no.4, 2017 , pp. 163-176 More about this Journal
Abstract
The Discrete Element Method (DEM) has been widely used in civil engineering as well as various industrial fields to simulate granular materials. In this study, DEM was adopted to predict the performance of the face plate-type earth pressure balance (EPB) shield TBM (Tunnel Boring Machine). An analysis of the TBM excavation performance was conducted according to two pre-defined excavation conditions with the different rotation speeds per minute (RPM) of the cutterhead. The TBM model which was used in this study has a 6.64 m of diameter and six spokes. Also, 37 precutters and 98 scrapers at an each spoke were modeled with a real-scale specification. From the analysis, compressive forces at the cutterhead face, shield and cutting tools, resistant torques at the cutterhead face, muck discharge rate and accumulated muck discharge by the screw auger were measured and compared.
Keywords
EPB Shield TBM; TBM; Excavation; DEM; Face plate-type;
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