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Flexible wall permeameter for measuring coefficient of permeability

A technology of permeability coefficient and permeameter, which is applied in the field of measuring instruments, can solve the problems of long test time and slow saturation speed of soil sample back pressure

Inactive Publication Date: 2007-04-25
HOHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Existing technologies such as hard-wall permeameters, which cannot avoid leakage from the side wall of the sample
In addition, the counterpressure saturation speed of the soil sample in the sample chamber is slow, and the test time is long

Method used

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  • Flexible wall permeameter for measuring coefficient of permeability

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Embodiment Construction

[0007] Referring to accompanying drawing 1, its structure is divided into three parts: hydraulic system, water volume measurement system and osmometer pressure chamber 21, wherein the confining pressure pipeline 27, drainage pipeline 20 and water inlet pipeline 19 in the hydraulic system are respectively controlled by the third The valve 4, the fifth control valve 7, and the fourth control valve 6 are connected to the pressure chamber 21 of the osmometer, and the confining pressure pipeline 27 in the hydraulic system is connected in series with the third pressure gauge 14, the first air pressure regulating valve 9, the supply pressure equipment 1°; the drain pipe 20 is connected in series with the B body variable pipe 15, the first pressure gauge 12, the second air pressure regulating valve 10, and the pressure supply equipment 1°; the water inlet pipe 19 is connected in series The C-body variable pipe 16, the second pressure gauge 13, the third air pressure regulating valve 11...

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Abstract

This invention relates to a flexible wall penetration device to measure penetration parameters, which comprises the following structure: the confined pressure pipe, drainage pipe, water-in pipe are separately controlled to join the penetration pressure room; the confined pressure pipe and the drainage pipe and the water-in pipe are separately connected the pressure meter, air adjusting valve, pressure supply device and B-part changing pipe, pressure meter, air adjusting valve, supply device and C changing tube, pressure meter, air adjusting valve, supply device, air adjusting valve water box exit

Description

technical field [0001] The invention relates to a flexible wall permeameter for measuring permeability coefficient, belonging to measuring instruments [0002] technology field. Background technique [0003] Existing technologies such as hard-wall permeameters cannot avoid leakage from the side wall of the sample. Moreover, the counterpressure saturation speed of the soil sample in the sample chamber is slow, and the test time is long. Contents of the invention [0004] The object of the present invention is to propose a kind of flexible wall permeameter for above-mentioned existing defect, it is on the basis of conventional triaxial instrument, through transformation, has increased water inlet water head device, water outlet water head device and water volume measurement device, and The pressure chamber has been modified, which can effectively avoid the leakage of the sample side wall. The technical solution of the present invention: its structure is divided into three...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N15/08G01N13/04
Inventor 束一鸣赵坚朱俊高李宪吴晓荣
Owner HOHAI UNIV
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