Abstract
The decreased long-term shear strength of the weak interlayer is one of main reasons to occur landslide in the clastic rock region of Guangxi. The goal of this paper is to study the creep characteristics of weak interlayer of clastic rock slope in Guangxi and its influence to the long-term slope stability. Soil samples were collected from a typical clastic rock slope in Guangxi. The shear creep test results show that the long-term shear strength of the weak interlayer soil decreased to half of peak shear strength after long-term load. The modeling results show that the slope factor of safety decreased from 1.493 to 0.717 when the shear strength of weak interlayer soil decreased from peak to residual shear strength. The creep characteristics of the weak interlayer soil led to the significance loss of residual strength thus weakens the slope stability.
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Acknowledgements
This research was supported by National Natural Science Foundation of China (NSFC) (No. 51369006) and the Project of Department of Land and Resources of Guangxi (No. GXZC2015-G3-3917-KLZB).
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Xu, Y., Wei, F., Yan, R., Li, J. (2018). Study on Slope Stability Effected by Creep Characteristics of Weak Interlayer in Clastic Rock Slope in Guangxi. In: Farid, A., Chen, H. (eds) Proceedings of GeoShanghai 2018 International Conference: Geoenvironment and Geohazard. GSIC 2018. Springer, Singapore. https://doi.org/10.1007/978-981-13-0128-5_10
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DOI: https://doi.org/10.1007/978-981-13-0128-5_10
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