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Flexible wall permeameter capable of measuring volume changes

A flexible wall, permeameter technology, used in permeability/surface area analysis, instruments, measuring devices, etc.

Active Publication Date: 2016-07-27
LANZHOU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the deficiencies of the prior art, the present invention proposes a flexible wall permeameter capable of measuring volume change, which not only overcomes the problem of water leakage on the side wall of the rigid wall permeameter, but also can monitor the volume change of the sample during the infiltration process in real time; it can be quantified Measure the stability of pore water pressure at the top and bottom of the sample; realize the monitoring of the permeability coefficient of different samples in the relevant codes of geotechnical engineering

Method used

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  • Flexible wall permeameter capable of measuring volume changes
  • Flexible wall permeameter capable of measuring volume changes
  • Flexible wall permeameter capable of measuring volume changes

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Embodiment Construction

[0021] The present invention will be described in detail below in conjunction with the accompanying drawings. The description in this part is only exemplary and explanatory, and should not have any limiting effect on the protection scope of the present invention.

[0022] Such as Figure 1-4 The shown flexible-wall permeameter that can measure volume change includes a pressure chamber 1, the top of the pressure chamber 1 is a pressure chamber top plate 2, and the bottom end is a pressure chamber bottom plate 3, and a sample placement chamber 19 is installed in the pressure chamber 1 , the top cap 4 is installed on the top of the sample placement chamber 19, and the base 5 is installed on the bottom end, and the base 5 is fixed on the bottom plate 3 of the pressure chamber by screws,

[0023] It also includes a volume change sensor 14 and a data collector 17,

[0024] The volume change sensor 14 is installed on the top plate of the pressure chamber 2 and communicates with the ...

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Abstract

The invention discloses a flexible wall permeameter capable of measuring volume changes. The flexible wall permeameter comprises a pressure chamber, the top end of the pressure chamber is a pressure chamber top plate, the bottom end of the pressure chamber is a pressure chamber bottom plate, a sample containing chamber is installed in the pressure chamber, a top cap is installed at the top end of the sample containing chamber, and a base is installed at the bottom end of the sample containing chamber; the flexible wall permeameter is characterized by further comprising a volume change sensor and a data collector, the volume change sensor is installed at the pressure chamber top plate and communicated with the interior of the pressure chamber through a pipeline, and the volume change sensor is in junctional communication with the data collector. By means of the flexible wall permeameter capable of measuring the volume changes, the problem of rigid wall permeameter side wall water leakage is solved, and sample volume changes in the penetration process can be monitored in real time; the stability of pore water pressure of the top and the bottom of a sample can be quantificationally measured; permeability coefficient monitoring of different samples in specifications related to geotechnical engineering is achieved.

Description

technical field [0001] The invention relates to the technical field of manufacturing permeation experiment equipment, in particular to a flexible wall permeameter capable of measuring volume change. Background technique [0002] In engineering construction, the permeability coefficient is an important index reflecting the permeability of soil. Accurate determination of permeability coefficient has important guiding significance for the setting of foundation pit excavation and drainage facilities, the evaluation of dam foundation permeability, and the settlement and time calculation of saturated clay foundation. Permeability test is an important method to determine the permeability coefficient. [0003] Most of the current permeation tests are tested by permeameters, and commonly used permeameters include rigid wall permeameters (represented by TST-55 permeameters) and flexible wall permeameters. The rigid wall permeameter can test the permeability coefficient of soil with ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N15/08
CPCG01N15/08G01N15/088
Inventor 谌文武刘伟伏祥龙孙冠平林高潮许贺
Owner LANZHOU UNIVERSITY
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