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Relationship Between Net Penetration Rate and Thrust of Shielded TBM in Hard Rock  

Park, Chul-Hwan (한국지질자원연구원 암반공학연구팀)
Park, Chan (한국지질자원연구원 암반공학연구팀)
Jeon, Yang-Soo (한국지질자원연구원 암반공학연구팀)
Park, Yeon-Jun (수원대학교 토목공학과)
Publication Information
Tunnel and Underground Space / v.12, no.2, 2002 , pp. 115-119 More about this Journal
Abstract
Four tunnels have been planned to operate a large diameter shielded TBM in Gwangju urban subway construction site. No.1 tunnel has completely been excavated for 13 months operating. Net penetration rate and its relations with thrust farce of the shielded TBM are analysis in this report. This shallow depth tunnel of 536m length is located in soil layers at launching and in hard rocks at ending with 84 m length. The weekly net penetration rates haute dropped down as low as 20∼110 mm/hr in rock while 400∼800 mm/hr in soil. The actual penetration rates we proved to be high as the theoretical penetration rate which is analysis in consideration of conditions of machine and rock. And net penetration rate is investigated to increase linearly thrust force.
Keywords
Net Penetration Rate; Thrust Force; Shielded;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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