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Geotechnical and Geological Engineering

Erschienen in:

20.04.2020 | Original Paper

Experimental Study on Ultra-low Friction Effect of Granite Block Under Coupled Static and Dynamic Loads

verfasst von: Dongqiao Liu, Youwen Lin, Yang Wang, Manchao He, Shudong Zhang

Erschienen in: Geotechnical and Geological Engineering | Ausgabe 5/2020

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Abstract

Zonal disintegration widely exists in the excavation roadways and caverns in deep rock masses. Ultra-low friction can be generated in the deep fractured rock masses, which reduces or disappears under dynamic loading. In this paper, granite blocks were processed into cube specimens with a cylindrical hole in center. Static loads and sinusoidal disturbances were applied to study the sliding phenomenon between blocks. During the experiments, real-time images, and acoustic emissions were recorded. Results indicate blocks above the cylindrical hole slide during the second half of the sinusoidal disturbance, and block sliding is caused by a reduction of friction between the blocks. The existence of ultra-low friction can be inferred from this experiment.

Vorheriger Artikel Considering the Effect of Block-to-Matrix Strength Ratio on Geomechanical Parameters of Bimrocks

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Titel: Experimental Study on Ultra-low Friction Effect of Granite Block Under Coupled Static and Dynamic Loads
verfasst von: Dongqiao Liu
Youwen Lin
Yang Wang
Manchao He
Shudong Zhang
Publikationsdatum: 20.04.2020
Verlag: Springer International Publishing
Erschienen in: Geotechnical and Geological Engineering / Ausgabe 5/2020
Print ISSN: 0960-3182
Elektronische ISSN: 1573-1529
DOI: https://doi.org/10.1007/s10706-020-01306-5

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