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Fracture Failure Analysis of Cutter Shaft of Disc Cutter for Full-Face Tunnel Boring Machine(TBM)
Pages: 31-33
Year: Issue:  2
Journal: Rock Drilling Machinery & Pneumatic Tools

Keyword:  TBMcutter shaftfracturefailure analysis;
Abstract: Disc cutter, an integral rock breaking tool of the tunnel boring machine(TBM), consists of cutter ring,cutter body, bearings, end caps, cutter shaft and sealing rings. The cutter shaft plays the role of supporting and securing cutters. For the accident of cutter shaft fracture occurring at the project site with a construction unit, the paper analyzes the causes behind the fracture in many respects. As a result, it identifies the main factors resulting in the cutter shaft fracture, safeguarding the smooth tunneling of TBM.
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