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Stability Analysis and Charts for Borrowed Soil in Ecological Slope Engineering

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Abstract

The mechanical stability of man-made mixed slurry sprayed on a sloped surface, i.e., borrowed soil, in ecological slope engineering is examined in this study. Through indoor simulation tests, the failure mode of the soil without seepage and with surface seepage is found to be a translational sliding surface parallel to the original sloped surface. An infinite slope case is assumed on the basis of the obtained failure mode, and stability analysis of the soil is performed. A general equation is then formulated for the instability thickness of the borrowed soil under the actions of earthquake loading and seepage. The stability charts for the borrowed soil are produced after the parameters of the equation are defined. The charts are basically the same in form as Taylor’s stability charts. The charts are proved valid by indoor simulation tests. With the charts, the instability thickness of the borrowed soil can be designed with a given design safety factor, and the safety factor of the borrowed soil in ecological slope engineering can be deduced.

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Acknowledgments

This study was jointly sponsored by the National Engineering Research Center for Inland Waterway Regulation and Key Laboratory of Hydraulic and Waterway Engineering of the Ministry of Education open research program through Grant No. SLK2015B01, the CRSRI open research program through Grant No. CKWV2014210/KY, the Public Science and Technology Research Funds Projects of Ocean through Grant No. 201105024. Their support is gratefully acknowledged.

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Authors and Affiliations

  1. South China Sea Institute of Plannning and Environmental Research, State Oceanic Administration, Guangzhou, 510300, China

    Liang Wang, Ping Shi, Haitao Tian, Linglong Cao, Yi Huang & Fei Xue

  2. Key Laboratory of Hydraulic and Waterway Engineering of the Ministry of Education, Chongqing Jiaotong University, Chongqing, 400074, China

    Liang Wang

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  1. Liang Wang
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  2. Ping Shi
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  3. Haitao Tian
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  4. Linglong Cao
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  5. Yi Huang
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Correspondence to Liang Wang or Linglong Cao.

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Wang, L., Shi, P., Tian, H. et al. Stability Analysis and Charts for Borrowed Soil in Ecological Slope Engineering. Indian Geotech J 46, 425–436 (2016). https://doi.org/10.1007/s40098-015-0177-z

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  • DOI: https://doi.org/10.1007/s40098-015-0177-z

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