南水北调中线工程安阳段渠坡换填土广义土–水特征曲线的试验研究

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Abstract In order to analyze the influence of stress state and stress path on the generalized soil-water characteristic curve，namely generalized SWCC，using the triaxial apparatus for testing unsaturated soils，a series of triaxial shrinking tests with deviator stress and net mean stress being constant values，triaxial isotropic compression tests with deviator stress and matric suction being constant values and triaxial p-fixed consolidated drained shear tests with net mean stress and matric suction being constant values are carried out against the backfill soil of the canal slope at Aayang district of South-to-North water diversion project. The test results show that matric suction，net mean stress and deviatoric stress have significant effect on the discharge of water. The expression of improved generalized SWCC is proposed，which can take the effect of stress state and stress path on the discharge of water comprehensively into account，and the computed results using this expression are in good agreement with the test data.

Key words： soil mechanics middle route of South-to-North water diversion project backfill soil generalized SWCC stress state stress path

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	ZHANG Junhao1
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	CHEN Zhenghan1
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ZHANG Junhao1,2,CHEN Zhenghan1, et al. EXPERIMENTAL STUDY OF GENERALIZED SOIL-WATER CHARACTERISTIC CURVE OF BACKFILL SOIL FROM CANAL SLOPE AT ANYANG DISTRICT OF MIDDLE ROUTE OF SOUTH-TO-NORTH WATER DIVERSION PROJECT[J]. , 2013, 32(s2): 3987-3994.

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https://rockmech.whrsm.ac.cn/EN/Y2013/V32/Is2/3987

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