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)
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.
陈卫忠1,2,肖正龙1,田洪铭1. 深埋高地应力TBM隧道挤压大变形及其控制技术研究[J]. 岩石力学与工程学报, 2015, 34(11): 2215-2226.
CHEN Weizhong1,2,XIAO Zhenglong1,TIAN Hongming1. RESEARCH ON SQUEEZING LARGE DISPLACEMENT AND ITS DISPOSING METHOD OF WEAK ROCK TUNNEL UNDER HIGH IN-SITU STRESS. , 2015, 34(11): 2215-2226.
DEBERNARDI D,BARLA G. New viscoplastic model for design analysis of tunnels in squeezing conditions[J]. Rock Mechanics and Rock Engineering,2009,42(2):259-288.
[32]
PELLET F L,ROOSEFID M,DELERUYELLE F. On the 3D numerical modelling of the time-dependent development of the damage zone around underground galleries during and after excavation[J]. Tunnelling and Underground Space Technology,2009,24(6):665- 674.
[33]
PELLET F,HAJDU A,DELERUYELLE F,et al. A viscoplastic model including anisotropic damage for the time dependent behaviour of rock[J]. International Journal for Numerical and Analytical Methods in Geomechanics,2005,29(9):941-970.
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