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http://dx.doi.org/10.7474/TUS.2011.21.6.508

Assessment of Cutting Performance of a TBM Disc Cutter for Anisotropic Rock by Linear Cutting Test  

Jeong, Ho-Young (서울대학교 공과대학 에너지시스템공학부)
Jeon, Seok-Won (서울대학교 공과대학 에너지시스템공학부)
Cho, Jung-Woo (한국생산기술연구원 대경권지역본부 메카트로닉스연구그룹)
Chang, Soo-Ho (한국건설기술연구원 SOC성능연구소 Geo-인프라연구실)
Bae, Gyu-Jin (한국건설기술연구원 SOC성능연구소 Geo-인프라연구실)
Publication Information
Tunnel and Underground Space / v.21, no.6, 2011 , pp. 508-517 More about this Journal
Abstract
The linear cutting test is the most reliable and accurate approach to measuring cutting forces and cutting efficiency using full-size disc cutter in various rock types. The result of linear cutting tests can be used to obtain the key parameters of cutter-head design (i.e. optimum cutter spacing, cutter forces). In Korea, LCM (Linear Cutting Machine) tests have been performed for typical Korean rock types, but these studies focused on the isotropic rocktypes. For prediction of TBM (Tunnel Boring Machine) performances in complex geological conditions including a bedded and schistose rockmass, it is important to consider the effects of anisotropy of rockmass on cutting performances and cutting efficiency. This study discusses a series of LCM tests that were performed for Asan Gneiss having two types of anisotropy angles to assess the effect of the anisotropy angle on rock-cutting performances of TBM. The result shows that the rock-cutting performances and optimum cutting conditions are affected by anisotropy angle and the effect of anisotropy on rock strength should be considered in a prediction of the cutting performances and efficiency of TBM.
Keywords
Linear cutting test; Anisotropy rock; Cutting performance; Disc cutter; TBM;
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