Experimental  Research on the Influence of  Particle Size and Gradation on Repose Angle of Rockfill

SUN Kai-chang; LIU Lin-feng; MING Hua-jun; XU Xiao-feng; LI Quan; TONG Jia-xin

doi:10.11988/ckyyb.20150632

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Journal of Changjiang River Scientific Research Institute ›› 2016, Vol. 33 ›› Issue (8) : 91-95. DOI: 10.11988/ckyyb.20150632

ROCKSOIL ENGINEERING

Experimental Research on the Influence of Particle Size and Gradation on Repose Angle of Rockfill

SUN Kai-chang¹, LIU Lin-feng¹, MING Hua-jun¹ ,XU Xiao-feng¹, LI Quan¹, TONG Jia-xin²

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Abstract

In order to explore the influence of gradation and particle size on repose angle of rockfill, we conducted accumulation model test of granular mixtures slope and analyzed the accumulation phenomenon. Then we measured the repose angle of rockfill material with different particle sizes and gradations by improved measuring method. The results show that repose angle increases gradually with the increase of particle size of homogeneous rockfill. The influence of average particle size on repose angle is weakened gradually with the increase of non-uniform coefficient, while the influence of non-uniform coefficient on the repose angle increases firstly and then keeps stable. Besides, the repose angle of granular mixtures becomes larger when the particle size distribution is more uneven.

Key words

rockfill material / repose angle / granular mixtures slope / non-uniform coefficient / accumulation phenomenon

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SUN Kai-chang, LIU Lin-feng, MING Hua-jun ,XU Xiao-feng, LI Quan, TONG Jia-xin. Experimental Research on the Influence of Particle Size and Gradation on Repose Angle of Rockfill[J]. Journal of Changjiang River Scientific Research Institute. 2016, 33(8): 91-95 https://doi.org/10.11988/ckyyb.20150632

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