Experimental study on single line wetting compression of coarse-grained soil

Jun Du; Xing-gang Shen

doi:10.1117/12.2614518

10 November 2021 Experimental study on single line wetting compression of coarse-grained soil

Jun Du, Xing-gang Shen

Proceedings Volume 12050, International Conference on Smart Transportation and City Engineering 2021; 120504K (2021) https://doi.org/10.1117/12.2614518
Event: 2021 International Conference on Smart Transportation and City Engineering, 2021, Chongqing, China

Abstract

The wetting deformation of rockfill dam has a significant impact on the safety and stability of the dam. The single-line wetting method of coarse-grained soil for Tianxingba reservoir is carried out by using compression apparatus to reveal the mechanism of wetting deformation, and establish the mathematical model of wetting deformation accumulation with time. The results show that the wetting deformation of coarse-grained soil is significant and cannot be ignored, and increases significantly with the increase of vertical compressive stress. According to the development characteristics of wetting deformation rate, the wetting deformation can be divided into instantaneous deformation and rheological deformation, and the rheological deformation is greater than the instantaneous deformation. Based on the time-history curve of the wetting deformation, a four- parameter hyperbolic wetting compression deformation model is established, by which the development law of wetting deformation of coarse-grained soil can be reflected objectively.

Citation Download Citation

Jun Du and Xing-gang Shen "Experimental study on single line wetting compression of coarse-grained soil", Proc. SPIE 12050, International Conference on Smart Transportation and City Engineering 2021, 120504K (10 November 2021); https://doi.org/10.1117/12.2614518

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