Effects of Large Rock Particles on Permeability of Soil and Rock Mixture

Xian Chao Xiang; Guo Sheng Jiang

doi:10.4028/www.scientific.net/AMR.250-253.1804

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 250-253Effects of Large Rock Particles on Permeability of...

Effects of Large Rock Particles on Permeability of Soil and Rock Mixture

Abstract:

The soil and rock mixture is widely spread in the world， which is much different from homogeneous and continuous soil, it is hard to get the permeability of the soil and rock mixture by theories, and it is also hard to get that from the large lab test as the difficulty in sampling. The particle flow code (PFC) method is used to study the permeability character influenced by large rock particles. The result shows that the seepage of the soil and rock mixture obeys the linearity of Darcy’s law in low fluid velocity, but the large particles influence the local pore pressure evidently. The permeability increases while the ratio of rock to soil increase first, and decreases while the ratio enlarge to 0.5, then increases after the ratio enlarge to 0.7. The large rock particles jam the fluid path, but decrease the length of the pipe, the permeability is influenced by the two effects.

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Periodical:

Advanced Materials Research (Volumes 250-253)

Pages:

1804-1807

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.250-253.1804

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Online since:

May 2011

Authors:

Xian Chao Xiang, Guo Sheng Jiang

Keywords:

Particle Flow Code, Permeability, Pore Pressure, Soil and Rock Mixture

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References

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