Journal article

Effects of grain dissolution–diffusion sliding and hydro-mechanical interaction on the creep deformation of soft rocks

Zhen Liu, Cuiying Zhou, Batong Li, Lihai Zhang, Yanhao Liang

Acta Geotechnica | Springer Science and Business Media LLC | Published : 2020

Abstract

The creep deformation behaviour of soft rocks is one of the most important research fields in geotechnical engineering. In this study, a theoretical model was developed to investigate the coupled effects of the grain dissolution–diffusion sliding and the hydro-mechanical interaction on the creep behaviour of soft rocks. Experimental results validated the model. The results demonstrate that the creep of soft rocks is primarily dependent on the shear stress on the sliding surface, the average thickness of the hydrated film and the amplitude of the cosinusoidal sliding surface. These three parameters can be used to describe the meso-mechanism of soft rock creep stages, i.e. the transient creep ..

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University of Melbourne Researchers

Grants

Awarded by National Natural Science Foundation of China (NSFC)


Awarded by National Key Research and Development Project


Awarded by Special Fund Key Project of Applied Science and Technology Research and Development in Guangdong


Awarded by Special Support Programme for High Level Talents in Guangdong


Funding Acknowledgements

The research is supported by the National Natural Science Foundation of China (NSFC) (Grant Nos. 41472257, 41530638, 41372302), the National Key Research and Development Project (Grant Nos. 2017YFC1501201, 2017YFC0804605), the Special Fund Key Project of Applied Science and Technology Research and Development in Guangdong (Grant Nos. 2015B090925016, 2016B010124007), and the Special Support Programme for High Level Talents in Guangdong (Grant No. 2015TQ01Z344).