List of products by author: Q. Z. Yu

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  Research and Application of Gradient Hardness Disc Cutter Ring Key Technologies

  Abstract: Shield or TBM tunneling method requires high requirements on the design and manufacture of disc cutter, especially for the material and heat treatment process of cutter ring. With the increase of projects using shield machines or TBMs, it’s difficu lt to accurately predict the complex geological conditions, especially upper soft and lower hard stratum, which will easily cause the block collapse...

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