Permeameter and permeability coefficient measuring system with same

Abstract

The invention discloses a permeameter used for measuring the permeability coefficient of cohesiveless soil, comprising a permeameter main body, a first porous plate, a second porous plate, a water inlet pipe, a water outlet pipe and a sand setting device, wherein, the first porous plate and the second porous plate are arranged in the permeameter main body, and the cohesiveless soil is arranged between the first porous plate and the second porous plate; the water inlet pipe is arranged at one side of the permeameter main body on which the first porous plate is arranged; the water outlet pipe is arranged at one side of the permeameter body on which the second porous plate is arranged; the sand setting device is arranged at the bottom of the permeameter main body; and at least one measuring hole is formed on the permeameter main body along the direction of the first porous plate to the second porous plate. According to the permeameter of the invention, a soil sample which has large sample particles and is suitable for high seepage gradient can be loaded in the test; the permeability test can be carried out by adopting the continuously circulating water; the influence of the air to the water stream in the soil sample can be eliminated with more accurate result. The invention also discloses a permeability coefficient measuring system with the above permeameter.

Description

technical field [0001] The invention relates to the field of geotechnical engineering, in particular to a permeameter for studying the permeability coefficient of a rock soil material sample and a permeability coefficient measurement system thereof. Background technique [0002] The study of soil permeability and seepage has become an important and practical topic in the field of soil mechanics and geotechnical engineering. It is closely related to human life and involves fields such as water conservancy, construction, transportation, mining, petroleum, etc. , agriculture and the environment. Seepage will cause seepage deformation of the soil, directly affecting the stability and safety of geotechnical structures and foundations; at the same time, seepage will cause water loss and reduce engineering benefits. The relative evaluation of seepage deformation and seepage damage is a basic item in structural design and stability analysis in actual engineering, which is directly ...

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Problems solved by technology

[0004] The existing permeameters and their measurement systems in the laboratory are mostly suitable for small sample and low pressure seepage tests, and have been unable to meet the experimental requirements of rock and soil materials with large particles and high permeability slopes in existing projects.

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