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只看楼主倒序阅读使用道具楼主发表于: 2016-05-25

【作者】：Qian，Zhai
【作者机构】：NTU
【摘要】：Residual soil covers most of the land in Singapore and is commonly found in unsaturated conditions due to the
deep ground water table. Matric suction in residual soil plays an important role on the stability of residual soil
slopes against rainfall. Matric suction in the soil will change due to infiltration during rainfall, and infiltration is
mainly controlled by the unsaturated hydraulic properties (i.e., soil-water characteristic curve (SWCC) and hydraulic
conductivity) of the residual soil. Variability in SWCC and hydraulic conductivity of residual soils in
Singapore, such as Jurong Formation, Bukit Timah granite and Old Alluvium, were quantified and compared
with the uncertainty of saturated soil properties. A newframework for the estimation of SWCC from the saturated
hydraulic conductivity, ks, is proposed in this paper. The upper bound fromthe proposed framework is recommended
for the infiltration analyses and the lower bound from the proposed framework is recommended for the
slope stability analyses.
【Abstract】：Residual soil covers most of the land in Singapore and is commonly found in unsaturated conditions due to the
deep ground water table. Matric suction in residual soil plays an important role on the stability of residual soil
slopes against rainfall. Matric suction in the soil will change due to infiltration during rainfall, and infiltration is
mainly controlled by the unsaturated hydraulic properties (i.e., soil-water characteristic curve (SWCC) and hydraulic
conductivity) of the residual soil. Variability in SWCC and hydraulic conductivity of residual soils in
Singapore, such as Jurong Formation, Bukit Timah granite and Old Alluvium, were quantified and compared
with the uncertainty of saturated soil properties. A newframework for the estimation of SWCC from the saturated
hydraulic conductivity, ks, is proposed in this paper. The upper bound fromthe proposed framework is recommended
for the infiltration analyses and the lower bound from the proposed framework is recommended for the
slope stability analyses.
【曾发表在】：Engineering Geology