Flexible wall permeameter capable of realizing continuous permeation of two solutions, and use method

Abstract

The invention provides a flexible wall permeameter capable of realizing continuous permeation of two solutions, and a use method. The flexible wall permeameter is composed of a pressure supply system,a confining pressure chamber and a permeation solution storage system; the pressure supply system is used for supplying a confining pressure of the chamber and top-end and bottom-end back pressures of a sample by an air compressor; the confining pressure chamber comprises a pressurizing base, a water permeable stone, filter paper, the sample and a pressurizing cap; the sample is sleeved with a latex film; the two ends of the sample are fixed on the pressurizing base and the pressurizing cap through water stop rubber rings; and a permeation solution storage is connected between the pressure supply system and the confining pressure chamber, and is used for storing and collecting the two solutions subjected to permeation. The two solutions are separated by an anti-corrosion and anti-seepagerubber film, so that the mixing and the pollution of a liquid supply tube are avoided; the permeation solution storage system between the pressure supply system and the confining pressure chamber realizes the determination of permeability coefficients of the sample in the same pressure state in different solution permeation processes; the defects of an existing flexible wall permeameter in function are overcome; and the actual engineering conditions are better simulated.

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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