Study on Synchronized Grouting Pressure to Segments of Shallow EPB Shield Tunnel

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Abstract:

Based on Terzaghi's theory on loosening earth pressure, two failure modes of soil upon shallow EPB shield tunnel caused by synchronous grouting are analyzed, and the theoretical equations of synchronous grouting pressure is built to calculate the maximum and minimum grouting pressure which correspond to the limit states of subsidence and upheaval failure. Combined with a shield tunnel construction practice, the theoretical and measured values are compared. The results show that the theoretical equations are valid and can provide a theoretical approach for the parameters of shield synchronous grouting.

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298-303

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December 2013

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© 2014 Trans Tech Publications Ltd. All Rights Reserved

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[1] Ye F. Back-filled grouts diffusion model and its pressure to segments of shield tunnel, Rock and soil mechanics, 2009, 30(5): 1307~1312.

Google Scholar

[2] Song T.T. Mechanism and Determination of Parameters of Synchronous Grouting in shield tunneling, Chinese Journal of Underground Space and Engineering 2007, 4(1): 130-133.

Google Scholar

[3] Wei G. Mechanism of backfill grouting in shield tunneling and its effect on the surrounding environment Journal of Disaster Prevention and Mitigation Engineering, 2010, 30: 299~304.

Google Scholar

[4] Yun L.H. New technology of shield tunnel in Japan, Press of Huazhong University of Science and Technology, 1999: 93~100.

Google Scholar

[5] Zhu H.H. Underground structures , China Building Industry Press, 2010: 33~34.

Google Scholar