ISSN 2096-4498

   CN 44-1745/U

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Tunnel Construction ›› 2010, Vol. 30 ›› Issue (6): 724-729.

• wenzhang • Previous Articles     Next Articles

Diagnosis and Solutions for Faults of Main Bearing Sealing
of TB880E Hard Rock TBM

JIANG  Qiao   

  1. China Railway Tunnel Stock Co., Ltd., Zhengzhou 450003, China
  • Received:2010-08-29 Revised:2010-12-05 Online:2011-01-13 Published:2011-01-05

Abstract:

Faults such as oil leakage, water incoming and grease mixing of main bearing of TB880E hard rock TBM are analyzed. Solutions such as cutterhead fixing, rockbolt locking, antiwearing steel ring welding, lip seal position changing and HBW grease adjusting are made. In the end, the defects and faults of the main bearing of the TBM have been solved, though the working condition is poor. In this way, the boring of the TBM is guaranteed and the availability of the TBM is improved. The successful solutions can provide reference for similar situations in the future.

Key words: TB880E full face TBM, main bearing, sealing, fault soluting