Multi-connected flexible wall permeameter for realizing continuous permeation of two solutions and its application method

Abstract

The present invention provides a multi-connected flexible-wall osmometer for continuous penetration of two solutions and a method for using it. The multi-connected flexible-wall osmometer includes a pressure supply system, a confining pressure chamber and an infiltration solution storage system. In the pressure supply system, The air compressor provides the confining pressure of the chamber and the back pressure at the top and bottom of the sample; the back pressure liquid supply pipe at the bottom end is connected to the water inlet pipe of the sample through the infiltration solution reservoir, and the back pressure liquid supply pipe at the top passes through the infiltration solution The reservoir is connected to the sample drainage pipeline, and the confining pressure liquid supply pipe is connected to the sample confining pressure pipeline; the two solutions are separated by an anti-corrosion and anti-seepage rubber membrane in the solution reservoir; the flexible wall permeameter configuration There are multiple units, which share the same confining pressure and top back pressure liquid supply pipe; the present invention adds an infiltration solution storage system between the pressure supply system and the confining pressure chamber, realizing the infiltration of samples in different solutions under the same pressure state. The determination of the permeability coefficient in the process makes up for the functional deficiency of the existing flexible wall permeameter, and saves more manpower and time.

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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