Technology for Welding Repair of Cutter Heads of Shield  Machine under Compressed Air

doi:10.3973/j.issn.1672-741X.2012.03.028

Tunnel Construction ›› 2012, Vol. 32 ›› Issue (3): 413-420.DOI: 10.3973/j.issn.1672-741X.2012.03.028

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Technology for Welding Repair of Cutter Heads of Shield Machine under Compressed Air

SUN Shanhui^1,2, CHEN Kui^1,2, WANG Zhenfei^1,2

(1. State Key Laboratory of Shield Machine and Boring Technology, Zhengzhou 450001, China; 2. China Railway Tunnel Group Co., Ltd., Luoyang 471009, Henan, China)

Received:2011-11-02 Revised:2012-04-06 Online:2012-06-20 Published:2012-07-09

Abstract

Abstract: The welding principle, key welding technologies, chamber airtightness and tunnel face stability are presented and analyzed. Conclusions drawn are as follows: 1) Professional hypobaric welding teams should be selected. 2) Detailed technical scheme and expert examining system should be established. 3) Strict process control measures should be worked out. 4) Strict technical leader onduty system should be established.

Key words: compressed air, cutter head, welding repair, airtightness, tunnel face stability

SUN Shanhui, CHEN Kui, WANG Zhenfei. Technology for Welding Repair of Cutter Heads of Shield Machine under Compressed Air[J]. Tunnel Construction, 2012, 32(3): 413-420.

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Technology for Welding Repair of Cutter Heads of Shield Machine under Compressed Air

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