Permeation consolidation device for measuring soil saturation and use method thereof

Abstract

The invention discloses a permeation consolidation device for measuring soil saturation and a use method thereof. The device mainly comprises a base, a side wall, two permeable stones, two permeable membranes, a driving part, a piston and an electrode, the side wall is arranged on the base, the two permeable stones and the side wall are encircled to form an accommodating cavity for accommodating a soil sample, the two permeable membranes are respectively attached to the corresponding permeable stones, and the permeable membranes can permeate water molecules and block polyethylene glycol molecules; the driving piece is connected with the piston so as to drive the piston to be close to or away from the permeable stone; the base and the piston are respectively provided with a channel communicated to the corresponding porous stone, the channels are used for introducing a polyethylene glycol solution, and the electrode is embedded into the side wall and partially extends into the accommodating cavity to measure the resistivity of the soil sample. The testing device is used for measuring the saturation degree in the soil consolidation test or penetration test, and has the advantages of high accuracy, high automation degree, monitoring cost saving and the like.

Description

technical field [0001] The invention relates to a seepage consolidation device for measuring soil saturation and a use method thereof, belonging to a test technology in the field of consolidation seepage of geotechnical engineering. Background technique [0002] Developments in unsaturated soil mechanics are closely related to advances in laboratory testing equipment, especially those involving suction measurement and control. Early equipment such as humidity probes, large-capacity tensiometers, and suction control systems are helpful for studying soil wetting collapse, suction stress, suction hardening, and corresponding elastoplastic models. In order to correctly describe the hydrodynamic coupling characteristics of soil, it is necessary to The hydraulic parameters of the soil were measured. Conventional osmosis tests estimate changes in hydraulic parameters by measuring water exchange through capillary tubes or by recording mass changes in polyethylene glycol solutions w...

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Problems solved by technology

[0004] Technical problem: In order to correctly describe the hydrodynamic coupling characteristics of the soil, the present invention adds resistivity technology to the traditional seepage consolidation instrument to measure the hydrodynamic coupling characteristics of the soil during the penetration test or consolidation test, and proposes a quantitative The seepage consolidation device for measuring soil saturation and its use method solve the problems of large errors in traditional seepage tests and the test process is easily disturbed by external conditions, save social resources, and have good economic benefits and engineering application prospects

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