Flexible wall permeameter and use method thereof

Abstract

The invention discloses a flexible wall permeameter and a use method thereof; the flexible wall permeameter disclosed by the invention comprises a shell; a pressure chamber is arranged in the shell; the flexible wall permeameter further comprises an exhaust bolt, a pressurizing cap, porous stones, a confining stress controller and a back pressure controller; the exhaust bolt is arranged at one side of the top of the shell; upper and lower layers of porous stones are arranged in the middle of the bottom of the pressure chamber; a test sample is arranged between the two layers of porous stones; the pressurizing cap is arranged on the top of the upper layer of porous stones; the back pressure controller is connected with the pressurizing cap; and the confining stress controller is connected with the pressure chamber. According to the invention, the confining stress controller and the back pressure controller are arranged outside the pressure chamber and the pressurizing cap in a connecting manner; experimental data can be clearly read through a controller display screen, so that the detection precision is increased; confining stress and back pressure are controlled within a reasonable range; bubbles in the test sample and a pipeline can be easily discharged within a short time; the saturation state is realized as soon as possible; the experimental preparation period is shortened; and the efficiency is increased.

Description

technical field [0001] The invention relates to a cement-soil testing device, in particular to a cement-soil flexible wall permeameter and a use method thereof. Background technique [0002] Cement soil is a general term for the consolidated body formed by mixing cement slurry with soil by grouting method, deep mixing method, and high-pressure rotary spraying method. Cement-soil technology is mainly used for anti-seepage of channels and supporting projects such as bridges, culverts, and gates of small-scale farmland water conservancy projects. It can also be used for dam slope protection, road stability layer, and cushion layer of large channels, etc., especially suitable for areas lacking sand and gravel. The prominent advantage of cement soil is that it can obtain local materials, reduce transportation, facilitate construction and low price. The amount of cost savings mainly depends on the transportation distance of gravel. Compared with the C15 cement soil (dry state) p...

AI Technical Summary

Problems solved by technology

The permeability of cement soil directly affects the performance of materials. The current research on permeability is due to the design of the instrument structure, resulting in low detection accuracy, which is not conducive to accurate research on the relationship between permeability and other properties.

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