Indoor model test device for testing permeability of geomembrane and operation method

Abstract

The invention relates to an indoor model test device for testing permeability of a geomembrane and an operation method, the indoor model test device includes a visual monitoring box system, a boundary condition regulation system, a geomembrane fixed adhesive system, a comprehensive measurement system and an information feedback analysis system. A visual monitoring box is used as a main body, toughened glass is used as a material, boundary conditions are controlled by a variable water level water box room, and the geomembrane fixed adhesive system comprising a geomembrane, a water permeation board, a cementing agent, a plugging layer and then like is used for bonding and fixing of the geomembrane. The boundary conditions of working states and paving conditions of the geomembrane can be studied by the indoor model test device for concrete design, the indoor model test device can be used for full-range and multi-level monitoring of pore water osmotic pressure, soil settlement, seepage flow, seepage time, permeability area, water level difference and seepage path length, permeability of a geotextile material can be evaluated and measured, compared with the previous, the indoor model test device is more simple, practical and comprehensive, and has obvious advantages.

Description

technical field [0001] The invention relates to an indoor model test device and an operation method for testing the permeability of a geomembrane. Background technique [0002] Earth-rock dams often use clay, concrete, and geosynthetics as anti-seepage materials. Among them, geomembrane has been widely used because of its high anti-seepage performance, strong adaptability to deformation, fast construction speed, simple process, and low cost. Geomembrane is a non-porous medium, and the existing research has not fully understood the permeability mechanism of geomembrane under hydraulic gradient. The permeability coefficient of the geomembrane itself is generally 1×10 -10 m / s~1×10 -15 m / s, but when it is used as an anti-seepage layer for construction and operation under different engineering conditions, due to the direct lapping of the geomembrane or poor bonding quality, the factory product is defective, and it is punctured by sharp objects in the cushion soil, etc. In the...

AI Technical Summary

Problems solved by technology

The permeability coefficient of the geomembrane itself is generally 1×10 -10 m / s~1×10 -15 m / s, but when it is used as an anti-seepage layer for construction and operation under different engineering conditions, due to the direct lapping of the geomembrane or poor bonding quality, the factory product is defective, and it is punctured by sharp objects in the cushion soil, etc. The actual permeability coefficient of the geomembrane will be greatly affected by the existence of

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