Flexible wall permeameter for realizing continuous permeation of two kinds of solutions and using method

Abstract

The invention provides a flexible wall permeameter capable of realizing continuous permeation of two kinds of solutions and a use method thereof. The flexible wall permeameter is composed of three parts: a pressure supply system, a confining pressure chamber and a permeation solution storage system. The pressure supply system is composed of air compressed The machine provides the confining pressure of the chamber and the top and bottom back pressure of the sample; the confining pressure chamber includes a pressurized base, a permeable stone, filter paper, a sample and a pressurized cap, the sample is covered with a latex film, and its two ends are sealed with water The rubber ring is fixed on the pressurized base and the pressurized cap; the permeate solution reservoir is connected between the pressure supply system and the confining pressure chamber to store and collect the two permeated solutions, and the anti-corrosion and anti-seepage rubber membrane connects the two The two solutions are separated to avoid mixing and polluting the liquid supply pipe; the osmotic solution storage system between the pressure supply system and the confining pressure chamber of the present invention realizes the variation of the permeability coefficient of the sample in the different solution osmotic processes under the same pressure state. The measurement makes up for the functional deficiency of the existing flexible wall permeameter and better simulates the actual engineering situation.

Description

technical field [0001] The invention belongs to the technical field of manufacturing permeation experiment equipment, and in particular relates to a flexible-wall permeameter for realizing continuous permeation of two solutions and a use method thereof. Background technique [0002] In the field of environmental geotechnical engineering, there may be more than one kind of liquid permeating through the soil, especially around the polluted site, it may be one or more of clean groundwater, heavy metal polluted liquid, and organic polluted liquid seeping through the soil simultaneously or sequentially. Therefore, it is of great guiding significance to carry out the seepage test of various solutions continuously passing through the soil in the room for understanding the seepage of the actual engineering soil, such as the anti-seepage of the soil of the separation wall. Currently commonly used permeameters include rigid wall permeameters and flexible wall permeameters. The rigid ...

AI Technical Summary

Problems solved by technology

However, the existing flexible-wall permeameters cannot meet the test requirements for continuous penetration of various solutions through the soil, that is, without changing the back pressure at the bottom of the sample, the back pressure at the top and the confining pressure of the chamber, a penetrating solution Switch to another infiltration solution to continue the infiltration test, so the existing infiltration instrument cannot truly simulate the infiltration of the soil

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