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Volume 45 Issue S1
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ZHANG Liangliang, DENG Gang, CHEN Rui, HUANGPU Zehua, CHEN Shuo. New method with measurable pore-water pressure for studying local hydraulic properties of triaxial soil specimens[J]. Chinese Journal of Geotechnical Engineering, 2023, 45(S1): 20-23. DOI: 10.11779/CJGE2023S10009
Citation: ZHANG Liangliang, DENG Gang, CHEN Rui, HUANGPU Zehua, CHEN Shuo. New method with measurable pore-water pressure for studying local hydraulic properties of triaxial soil specimens[J]. Chinese Journal of Geotechnical Engineering, 2023, 45(S1): 20-23. DOI: 10.11779/CJGE2023S10009
shu

New method with measurable pore-water pressure for studying local hydraulic properties of triaxial soil specimens

  • 1.

    School of Civil and Environmental Engineering, Harbin Institute of Technology, Shenzhen 518055, China

  • 2.

    Guangdong Provincial Key Laboratory of Intelligent and Resilient Structures for Civil Engineering, Shenzhen 518055, China

  • 3.

    State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin, China Institute of Water Resources and Hydropower Research, Beijing 100038, China

  • 4.

    Construction Management Bureau of Qianping Reservoir, Zhengzhou 450003, China

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  • Received Date: July 06, 2023
  • Available Online: November 23, 2023
    Graphical Abstract
    • Abstract
  • Measuring the pore-water pressure within a soil mass is critical for studying its hydraulic properties. Due to the granular structure characteristics of soil, the fine particles within soil are prone to migrate with the movement of water flow. The migration of fine particles may change the distribution of the pore-water pressure, thereby altering the local structure and hydraulic properties of soil. In this study, a new method with measurable local pore pressure is introduced to capture the localized response of pore structure of soil induced by the migration of fine particles. The new method meets the sealing requirements of the latex membrane with inserted pipes under stress. Thus, the pore-water pressure transducers can be arranged along the axial and radial directions of the soil specimens to measure the pore pressure at various positions, thereby helping to study the local hydraulic properties. The global and local evolution characteristics of the soil specimens during suffusion are studied using new the method in the suffusion tests. The results show that the new method has a satisfactory response. The spatial and temporal evolution of local hydraulic conductivity reveals that the migration of fine particles along seepage path exhibits significant localization and non-uniformity.
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    • References (9)
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