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| Adaptability of TBM and classification method of large deformation of soft rock |
| WANG Mingyao1, LU Yiqiang1,2*, HE Fei1, LI Chao1
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1. China Railway Engineering Equipment Group Co., Ltd., Zhengzhou 450016, Henan, China;
2. College of Civil Engineering, Tongji University, Shanghai 200092, China |
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Abstract At present, the evaluation method of TBM construction suitability under different large deformation levels was lacking. The suitability classification standard of TBM method for soft rock tunnel was established by analyzing the mechanism of large deformation in soft rock, summarizing the classification methods, and considering the influencing factors of TBM tunnelling. It was divided into five classes: very suitable, suitable, more suitable, poorly suitable and unsuitable, and the reasonableness of the method was verified by engineering examples. This method could provide a reasonable reference basis for the classification of large deformation in soft rock tunnels and the evaluation of the suitability of TBM, and then selected suitable construction methods and prevention measures.
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Received: 25 May 2022
Published: 20 December 2022
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