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| RESEARCH ON SQUEEZING LARGE DISPLACEMENT AND ITS DISPOSING METHOD OF WEAK ROCK TUNNEL UNDER HIGH IN-SITU STRESS |
| CHEN Weizhong1,2,XIAO Zhenglong1,TIAN Hongming1 |
(1. State Key Laboratory of Geomechanics and Geotechnical Engineering,Institute of Rock and Soil Mechanics,
Chinese Academy of Sciences,Wuhan,Hubei 430071,China;2. Geotechnical and Structural Engineering Research Center,Shandong University,Jinan,Shandong 250061,China) |
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Abstract Without timely and reasonable treatments,the large convergence displacement due to high geostress and complex tectonic stress of ground squeezing will result in economic losses. TBM tunnels were the focus of the study. The mechanism of large displacement due to ground squeezing was described. The prediction and recognition methods were presented. The prediction methods of convergence displacement of tunnel including AI method and uncertainty analysis method were discussed in detail. Finally the common disposal methods for grounds under different squeezing levels were summarized. The formulas for recognition,the prediction methods and the disposal technologies of large squeezing displacement of TBM tunnels were developed for corresponding projects,so blindly using these methods yielded no effect. We suggested the choosing of these methods with caution.
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MAO Yuting1, 2, HE Manchao1, 2, LIU Fangzhou3, BAI Xing4, YANG Xiaojie1, 2, TAO Zhigang1, 2*. Development and application of a large-scale physical model system for tunnel creep testing[J]. , 2026, 45(6): 1627-1638. |
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