Multi-linkage flexible wall permeameter capable of realizing continuous permeation of two solutions, and use method

Abstract

The invention provides a multi-linkage flexible wall permeameter capable of realizing the continuous permeation of two solutions, and a use method. The multi-linkage flexible wall permeameter comprises a pressure supply system, a confining pressure cavity and an osmotic solution reservoir system, wherein an air compressor in the pressure supply system provides the confining pressure of the cavityand the back pressure of the top end and the bottom end of a test specimen; the back pressure liquid supply pipe of the bottom end is connected with a test specimen water feeding pipeline through an infiltration solution reservoir; the back pressure liquid supply pipe of the top end is connected with a test specimen water discharging pipeline through an effusion solution reservoir; a confining pressure liquid supply pipeline is connected with a test specimen confining pressure pipeline; and in the solution reservoir, two solutions can be separated through an antiseptic and impermeable rubber film. A plurality of flexible wall permeameters are configured, and one confining pressure liquid supply pipeline and one top end back pressure liquid supply pipeline are shared. The osmotic solution reservoir system is added between the pressure supply system and the confining pressure cavity, so that the measurement of a permeation coefficient in the permeation process of different solutions under the same pressure state is realized, the function deficiency of an existing flexible wall permeameter is made up, and manpower and time can be saved.

Description

technical field [0001] The invention belongs to the technical field of permeation experiment equipment manufacturing, and in particular relates to a multi-connected 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 are often more than one kind of liquid that seeps 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 that seep through the soil simultaneously or sequentially. Therefore, it is of great guiding significance to carry out the penetration test of multiple solutions continuously passing through the soil indoors at the same time, for understanding the seepage of actual engineering soil, such as the anti-seepage of the separation wall soil. Currently commonly used permeameters include rigid wall permeameters and flexible w...

AI Technical Summary

Problems solved by technology

However, the existing flexible wall permeameters cannot meet the requirement of continuous infiltration of multiple solutions through the soil at the same time, that is, without changing the confining pressure of the chamber, the back pressure at the bottom of the sample, and the back pressure at the top of the sample. The solution is switched to another infiltration solution to continue the infiltration test, so the existing infiltration instruments cannot truly simulate the infiltration of the soil; in addition, for the continuous infiltration of multiple solutions, especially heavy metals or organic pollutants as the infiltration fluid Often, long-term penetration tests are required, which usually takes about 1-3 years. Using an existing instrument to make a sample may take too much time and labor costs

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