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Measurement and verification method for permeability coefficient of remolded non-saturated silty clay

A technology of permeability coefficient and verification method, which is applied in the field of measurement and verification of permeability coefficient of reshaped unsaturated silty clay, and can solve problems such as inability to guarantee accuracy.

Inactive Publication Date: 2017-10-17
LUOYANG INST OF SCI & TECH
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Problems solved by technology

The permeability coefficient of unsaturated soil has been obtained indirectly by using the soil-water characteristic curve for a long time, but its accuracy cannot be guaranteed

Method used

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  • Measurement and verification method for permeability coefficient of remolded non-saturated silty clay
  • Measurement and verification method for permeability coefficient of remolded non-saturated silty clay
  • Measurement and verification method for permeability coefficient of remolded non-saturated silty clay

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Embodiment Construction

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0021] An embodiment of the present invention provides a method for measuring and verifying the permeability coefficient of remodeled unsaturated silty clay, the method comprising:

[0022] To prepare samples, according to the actual state of unsaturated soil, control the density of the soil samples at a certain value, and adopt the three-layer compaction method to configure samples with various mass and water contents;

[0023] Indirect measurements, using eg...

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Abstract

The invention discloses a measurement and verification method for a permeability coefficient of remolded non-saturated silty clay, and relates to the technical field of geological engineering. By use of a non-saturated triaxial apparatus, the permeability coefficient of the non-saturated remolded silty clay is measured by adopting a direct method and an indirect method. A result shows that the permeability coefficient of the non-saturated clay can be confirmed after being deducted through the indirect method, measured through the direct method; a test shows that direct measurement of the permeability coefficient of the non-saturated clay is realized, and the reliability of the permeability coefficient measured through the indirect method is also verified.

Description

technical field [0001] The invention relates to the technical field of geological engineering, in particular to a method for measuring and verifying the permeability coefficient of remodeled unsaturated silty clay. Background technique [0002] Unsaturated soil is a porous medium composed of multiphase systems such as water, gas, and solid particles. Especially because of the existence of gas-phase interface, the permeability characteristics of unsaturated soil are obviously different from those of saturated soil. Due to the presence of matric suction, the hydraulic conductivity of unsaturated soils cannot be determined by conventional experimental methods. The permeability coefficient of unsaturated soil has been obtained indirectly by using the soil-water characteristic curve for a long time, but its accuracy cannot be guaranteed. Contents of the invention [0003] The embodiments of the present invention provide a method for measuring and verifying the permeability coe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N15/08
CPCG01N15/0826
Inventor 刘翠然丁梧秀童怀峰王丽郭进军李永乐
Owner LUOYANG INST OF SCI & TECH
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