›› 2009, Vol. 30 ›› Issue (8): 2324-2330.

• Geotechnical Engineering • Previous Articles     Next Articles

Risk analysis of cutter head failure of composite EPB shield

HUANG Hong-wei1，YAN Yu-ru1，HU Qun-fang2   

  1. 1. Department of Geotechnical Engineering, Tongji University, Shanghai 200092, China; 2. Shanghai Institute of Disaster Prevention and Relief, Shanghai 200092, China
  • Received:2007-11-27 Online:2009-08-10 Published:2011-03-14

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Abstract:

All kinds of accident examples and their potential reasons are analyzed and summarized for cutter head failure of composite earth pressure balance (EPB) shield. In order to research the mechanism of the failure mode on cutter disc, cutters and other different cutting components in composite EPB shield machine, fault tree analysis (FTA) is applied to establishing an analytical model on cutter head failure. Firstly, potential failure modes and effect factors of different failures are all analyzed and calculated by set theory in qualitative and quantitative methods. Then, relevant control measures are proposed to reduce the cutter head failure of composite EPB shield. The results will be useful for cutter head design and construction by composite EPB shield in China.

Key words: composite EPB shield, risk of cutter head failure, fault tree analysis (FTA)

CLC Number: 

  • TU 443
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