Geotextile clogging and permeability simulation experiment device

Abstract

The invention discloses a geotextile clogging and permeability simulation experimental device. The device comprises a liquid input system and a material filling system, the material filling system comprises a base and a plurality of transparent plexiglass tubes 3, the plexiglass tubes 3 are sequentially stacked from top to bottom and connected through hubbed flanges, a geotextile clamping plate and a sealing ring are installed on each hubbed flange, the geotextile clamping plates are detachable, and the liquid input system is communicated with the plexiglass tubes 3. The device can be used forpermeation experiments of single-layer and multi-layer filling materials, multi-layer geotextile permeation and clogging experiments and clogging and penetration experiments of the filling materialsand geotextile under the dry-wet cycle function.

Description

technical field [0001] The invention relates to the technical field of testing the water permeability of geotextiles, in particular to a simulation experiment device for silting and permeability of geotextiles. Background technique [0002] In the slope engineering of mines and highways, seepage pipes wrapped with different types of geotextiles must be buried to reduce the groundwater level in the slope and avoid slope instability and damage caused by excessive water levels. After decades of long-term use, the seepage pipe will fail due to silting deposits on the surface of the geotextile, and groundwater cannot flow out. In order to analyze the sedimentation clogging mechanism, it is necessary to carry out indoor simulation experiments to reveal the clogging process and influencing factors of geotextiles, and to simultaneously test the change law of its permeability, so as to provide a basis for the design of drainage pipes and clogging prevention in the later stage. [00...

AI Technical Summary

Problems solved by technology

[0005] From the existing technology, when carrying out seepage silting experiments on soil materials, various experimental equipment can carry out the permeability test of a single filling material. In the process of use, there are problems in the following aspects: 1) filling in the experiment The soil type is a homogeneous material. If the material is multi-layered, the measured permeability coefficient of the material is the average value, and the permeability coefficient of a single layer cannot be obtained; 2) The geotextile can only be arranged in one layer, and it cannot be replaced after arrangement Carry out a comparison experiment of silting after the same solution acts for different times; 3) The water level control is relatively simple, and the water level rise and fall cycle experiments cannot be carried out, and the permeability coefficient of the filling material and the geotextile after the cycle are analyzed; 4) The experiment During the process, some equipment is equipped with pressure monitoring equipment, and few side walls are equipped with sampling positions, so it is impossible to take samples during the experiment and analyze the changes in the composition and concentration of the initial solution after different times

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