Experimental Investigation on Factors Influencing Stable Slope Angle of Granular Accumulation

Shan Chen; Li Chen; Min Zhou; Jie Huang

doi:10.4028/www.scientific.net/AMM.438-439.1238

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 438-439Experimental Investigation on Factors Influencing...

Experimental Investigation on Factors Influencing Stable Slope Angle of Granular Accumulation

Abstract:

The stability of granular accumulation such as silt dyke is intimately related to stable slope angle. In this paper, the repose angles of granular medium of different mineral compositions, particle shapes, grain sizes and moisture contents were measured. The mechanical mechanism of granular slope stability was analyzed, as well as influence factors of stable slope angle. The results show that internal friction coefficient f is the key factor. For dry granule, form roughness and surface roughness are the main factors influencing f, leads to different rules of repose angles changing with mineral composition, particle shape, and grain size. With the increasing of moisture content, f increases, the repose angle increases at first, reaches the maximum and then keeps basically stable; the process is affected by the particle surface roughness, water film thickness, and adsorption capacity which is related to the mineral composition, particle shape, grain size of the granular medium.

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Periodical:

Applied Mechanics and Materials (Volumes 438-439)

Pages:

1238-1243

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.438-439.1238

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Online since:

October 2013

Authors:

Shan Chen, Li Chen, Min Zhou, Jie Huang

Keywords:

Accumulation, Granular, Internal Friction Coefficient, Moisture Content, Stable Slope Angle

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