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Practical Determination of Hydraulic Conductivity of Sand Sediment Soils
Morii, Toshihiro
6980
Takeshita, Yuji
6981
Inoue, Mitsuhiro
6982
Sand sediment soil
Hydraulic conductivity of soil
Guelph pressure infiltrometer
Gravel content by mass
An integrated procedure to determine hydraulic conductivity of sand sediment soil that is characterized by an inclusion of gravel particles and cobbles in sand soil is proposed. Firstly the Guelph pressure infiltrometer (GPI) method to measure the soil permeability of the sand is introduced and extended so that it can estimate unsaturated moisture properties of the soil. Secondly a descriptive cylindrical soil model representing sand, gravel and cobbles, and voids within soil is assumed to determine the hydraulic conductivity of the sand sediment soil. A continuity law of flow discharge through the cylindrical soil model is introduced to derive theoretically a functional relationship of the hydraulic conductivity of the sand sediment soil with the hydraulic conductivity of the sand measured by the GPI method and the gravel content of the soil. An accuracy of the functional relationship of the hydraulic conductivity is examined by laboratory permeability test. Finally the GPI method and the functional relationship of the hydraulic conductivity are integrated to determine the soil permeability of the sand sediment soil. A numerical example is given to show an effect of the gravel content of soil on a storm runoff over the sand sediment soil.
journal article
日本雨水資源化システム学会
2003-12
application/pdf
Journal of rainwater catchment systems
1
9
1
6
AA11657953
1343-8646
https://niigata-u.repo.nii.ac.jp/record/2073/files/40007139767.pdf
eng
http://doi.org/10.7132/jrcsa.kj00000795217
http://ci.nii.ac.jp/naid/40007139767
Copyright (C) 2003 日本雨水資源化システム学会
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