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Influence of mud shear strength on the stability of a trench cutting re-mixing deep wall during construction

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Abstract

The trench stability of the trench cutting re-mixing deep wall (TRD) is one of the key factors related to construction safety and quality. The safety factor is used in this study to accurately indicate stability of trench. Different depths correspond to different safety factors, and the area above the water table is not affected by groundwater in the calculation of the safety factor. Therefore, the safety factor should be calculated according to the depth of the tension crack zone and the groundwater table. Based on the ultimate force analysis method and the simplified plane sliding model, the safety factor equation including the mud shear strength is obtained. The curve of the TRD trench safety factor is obtained by analysing the working area of the mud shear strength in the trench. The TRD safety factor calculation method is obtained by comprehensively considering the above factors, which provides a theoretical basis for the safe construction of the TRD.

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Acknowledgements

The project is funded by the Qingdao Metro Group Corporation, the Joint Funds of the National Natural Science Foundation of China under Grant No. U1706223 and the General Program of the National Natural Science Foundation of China under Grant No. 51879152.

Funding

Gratitude is owed to the China Scholarship Council and Professor Adam Bezuijen for providing opportunities to study at Ghent University.

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Authors and Affiliations

  1. Geotechnical and Structural Engineering Research Center, Shandong University, Jinan, 250061, China

    Peng Jiang, Qing-song Zhang, Ren-tai Liu & Yan-kai Liu

  2. Department of Civil Engineering, Laboratory of Geotechnics, Ghent University, 9052, Ghent, Zwijnaarde, Belgium

    Peng Jiang

  3. Qingdao Metro Group Corporation, Qingdao, 266000, China

    Quan-wang Li

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  1. Peng Jiang
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  2. Qing-song Zhang
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  3. Ren-tai Liu
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  4. Yan-kai Liu
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Correspondence to Ren-tai Liu.

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Responsible Editor: Zeynal Abiddin Erguler

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Jiang, P., Zhang, Qs., Liu, Rt. et al. Influence of mud shear strength on the stability of a trench cutting re-mixing deep wall during construction. Arab J Geosci 13, 303 (2020). https://doi.org/10.1007/s12517-020-5281-4

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  • DOI: https://doi.org/10.1007/s12517-020-5281-4

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