Longtan Shao
Dalian University of Technology
Pore water pressureDigital image processingSlope stability analysisHysteresisGeologyFinite element methodSoil scienceSoil waterGeotechnical engineeringMaterials scienceTriaxial shear testConstitutive equationDeformation (meteorology)Soil mechanicsWater contentShear bandMathematicsEnvironmental scienceDigital imageSlip (materials science)MechanicsStructural engineeringEffective stressOutflowStress (mechanics)Thermodynamics
49Publications
9H-index
299Citations
Publications 50
Newest
#1Zhixiang Chen (DUT: Dalian University of Technology)H-Index: 1
#2Guo Xiaoxia (DUT: Dalian University of Technology)H-Index: 6
Last. Gao Lingxia (MUC: Minzu University of China)H-Index: 1
view all 5 authors...
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#1Tiande Wen (DUT: Dalian University of Technology)H-Index: 5
#2Longtan Shao (DUT: Dalian University of Technology)H-Index: 9
Last. Xiaoxia Guo (DUT: Dalian University of Technology)H-Index: 4
view all 3 authors...
AbstractThe importance of the hydraulic properties of unsaturated soil for geotechnical designs has been well understood. Many studies on the soil water retention curve (SWRC) and the relative coefficient of permeability under drying and wetting cycles have been performed. However, most of the previous investigations of hydraulic properties are limited to a single drying and wetting cycle or are based on multiple drying–wetting cycles with limited soil experiments. This might be because the meas...
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#1Geng Niu (DUT: Dalian University of Technology)H-Index: 2
#2De'an Sun (SHU: Shanghai University)H-Index: 32
Last. Lifeng Zeng (DUT: Dalian University of Technology)H-Index: 1
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AbstractA series of experiments were performed to explore the difference in the soil water retention curves (SWRCs) and the pore size distributions (PSD) between undisturbed and compacted clays over a wide range of suction. It is showed that the SWRCs of undisturbed and compacted specimens are only significantly different in the transition zone. The SWRC of undisturbed specimens has a typical shape of ‘S’, but the compacted specimens have a ‘horizontal stage’ in transition zone. The data of merc...
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The direct mechanical effects of seepage force on the behavior of hydrate-bearing porous media (HBPM) have commonly been neglected in previous studies. In this work, the physical nature of seepage force in hydrate-bearing porous media under saturated and unsaturated seepage conditions was adequately explained, and then, the direct effects of seepage force on the mechanical behavior of HBPM were quantified. Therefore, the results obtained in this manuscript provide a new insight to evaluate the d...
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#1Zhixiang Chen (DUT: Dalian University of Technology)H-Index: 1
#2Guo Xiaoxia (DUT: Dalian University of Technology)H-Index: 6
Last. Gao Lingxia (MUC: Minzu University of China)H-Index: 1
view all 5 authors...
Abstract In the construction of artificial freezing methods and cold region engineering, the determination of the accurate temperature field is the demand of both ensuring the stability of frozen soil and reducing the project investment. Affected by the external environment, phase change latent heat, non-linear thermal parameters, etc., the temperature evolution of the soil freezing process is a non-linear form, and the temperature field evolution will be more complex with the change of differen...
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#1Tiande Wen (SZU: Shenzhen University)H-Index: 5
#2Wang Pengpeng (Zhengzhou University of Light Industry)H-Index: 1
Last. Guo Xiaoxia (DUT: Dalian University of Technology)H-Index: 6
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Abstract The magnitude of the volume change in response to changes in the water content is usually described by the soil-shrinkage characteristic curve (SSCC). The void ratio of soil is affected by its shrinkage behavior, and the soil water characteristic curve (SWCC) will be affected. In this paper, a new test platform is introduced to measure the soil shrinkage behavior during the drying process of silicon micropowder (SMP), Guangxi Guiping clay (GGC) and kaolin. The soil water characteristic ...
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#3Jean-Michel Pereira ('ENS Paris': École Normale Supérieure)H-Index: 23
Extension of the effective stress concept to unsaturated soils has been a major concern for decades. Recent studies significantly contributed to the understanding of the fundamentals behind Bishop'...
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#1Longtan Shao (DUT: Dalian University of Technology)H-Index: 9
#2Zhixiang Chen (DUT: Dalian University of Technology)H-Index: 1
Last. Wentan Jiang (DUT: Dalian University of Technology)
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Tailings pond is a large-scale fragmented sedimentary body formed by mining tailings, and the safety management of tailings pond affects the sustainable development of mining productions. The nature sedimentation behavior of the tailings is the initial condition to obtain the particle fractal dimension and packing structures of tailings, and is also the basis to evaluate the stability of tailings pond. To study the natural sedimentation behaviors of iron tailings, 4 large-scale simulation tests ...
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#1Zhixiang Chen (DUT: Dalian University of Technology)H-Index: 1
#2Guo Xiaoxia (DUT: Dalian University of Technology)H-Index: 6
Last. Tian Xiaojian (DUT: Dalian University of Technology)
view all 5 authors...
The basic principle of the three-dimensional stress state test is deduced based on the relationship between the normal stress and the conventional stress state, and the relationship between the total stress state and the effective stress state is given based on Terzaghi’s effective stress principle. On this basis, we made a three-dimensional earth pressure device by using a pedestal obtained by 3D printing technology, 6 micro earth pressure cells, a pore pressure cell and an attitude sensor. Con...
Source
#1Tiande Wen (DUT: Dalian University of Technology)H-Index: 5
#2Longtan Shao (DUT: Dalian University of Technology)H-Index: 9
Last. Xiaoxia Guo (DUT: Dalian University of Technology)H-Index: 4
view all 3 authors...
AbstractThis paper proposes a permeability function to estimate the water permeability coefficient of unsaturated soil. It is derived on the basis of the equilibrium equation of the water phase. Only one parameter is required in the proposed function, which is similar to the Brooks–Corey model. However, this parameter can be more easily obtained by using permeability tests of saturated soil with different porosity values. A number of test results in the literature are employed to validate the pr...
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