Multifunctional permeameter and method thereof

Abstract

The invention provides a multifunctional permeameter and a method thereof, which belong to the technical field of geomechanics. The permeameter comprises a pressurization part, a control part, a support part, and an experiment enforcement part; wherein, the pressurization part is arranged on the upper end of the experiment enforcement part, the support portion is fixed with the experiment enforcement part through a hose clamp, and the control part is connected with the pressurization part and the experiment enforcement part. The multifunctional permeameter can easily realize transition of a constant head and a varying head; realizes substitution of air pressure to hydraulic pressure to reduce the experiment error; and conveniently researches the seepage path of the current in soil, the penetration characteristic under different pressure conditions, the penetration characteristics while transverse penetration and vertical penetration, and observes the microscopic change of the soil granules while penetration; the experiment result is conversed to an electric signal by a flowmeter and then the electric signal is sent to a computer, the result can be directly obtained, sp that the method is convenient and accurate; after the current flows out, the current is contained by a measuring cylinder, so that the result accuracy can be further guaranteed.

Description

technical field [0001] The invention belongs to the technical field of rock and soil mechanics, and in particular relates to a multifunctional permeameter and a method. Background technique [0002] The seepage of liquid in the soil is a very common phenomenon in nature and industry; the seepage in the soil will cause the soil to loosen, and even cause mudslides after a long time; one of the most common hazards of mudslides is rushing into villages, towns, Destroy houses, factories, enterprises, institutions and other facilities; debris flows can directly bury stations, railways, highways, destroy roadbeds, bridges and culverts and other facilities, resulting in interruption of traffic, and can also cause running trains and cars to overturn, resulting in major personal casualties Accidents; sometimes debris flows into the river, causing substantial changes in the river, indirect damage to roads, railways and other structures, and even forcing road rerouting, resulting in hug...

AI Technical Summary

Problems solved by technology

[0003] Traditional permeameters have a single function, and for soils with different permeability coefficients, different permeameters suitable for constant water head and variable head need to be used, which cannot be easily converted; the inner walls of existing permeameters are all smooth, which will cause relatively high pressure during the experiment. Serious boundary effects will affect the experimental results, and the experimental accuracy will be very different from the actual ones; the operation is complicated and the requirements for the test personnel are higher when the higher-end test equipment is used; the previous research on the permeability coefficient is too general to study the longitudinal seepage and lateral flow. The seepage relationship, the seepage path of the water flow in the soil cannot be obtained, and the subtle changes of the soil cannot be observed

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