Experiment device for testing vertical permeability coefficient of multi-layer geotechnical cloth

Abstract

The invention relates to the technical field of permeability performance test of geotextile, in particular to an experiment device for testing a vertical permeability coefficient of multi-layer geotechnical cloth. The experiment device comprises a base, wherein a water tank is fixedly arranged at a top end of the base, vertical racks are fixedly arranged at a bottom end of an inner wall of the water tank, a permeation box is fixedly arranged at top ends of the vertical racks, geotechnical cloth placement racks are fixedly arranged at a bottom end of an inner wall of the permeation box, rubbersealing rings are embedded to top ends of the geotechnical cloth placement racks, fixed devices are arranged at two sides of the geotechnical cloth placement racks, grooves are formed in the fixed devices and are corresponding to the rubber sealing rings, a current limiting cylinder is fixedly arranged between the two fixed devices, a through hole is formed in a bottom end of the current limitingcylinder, a water inlet pipe communicates with a top end of the current limiting cylinder, a seepage hole is formed in a bottom end of the permeation box, the other end of the water inlet pipe communicates with a water outlet end of a water pump, and a water inlet end of the water pump communicates with a water storage boxy. The experiment device has the characteristics of high experiment accuracyand high practicability.

Description

technical field [0001] The invention relates to the technical field of testing the water permeability of geotextiles, in particular to a test device for testing the vertical permeability coefficient of multilayer geotextiles. Background technique [0002] Geotextile, also known as geotextile, is a permeable geosynthetic material made of synthetic fibers through needle punching or weaving. Geotextile is one of the new materials geosynthetics, the finished product is cloth-like, divided into woven geotextile and non-woven filament geotextile. Geotextiles have the characteristics of high strength, corrosion resistance, good water permeability, good anti-microbial properties, convenient construction, and complete specifications. [0003] At present, the existing test devices for testing the vertical permeability coefficient of multi-layer geotextiles are to fix the multi-layer geotextiles in layers. It is difficult to estimate the loss; and due to the poor conditions of the en...

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Problems solved by technology

[0003] At present, the existing test devices for testing the vertical permeability coefficient of multi-layer geotextiles are to fix the multi-layer geotextiles in layers. It is difficult to estimate the loss; and due to the poor conditions of the project site, most of the test devices for the vertical permeability coefficient test of multi-layer geotextiles are difficult to ensure the stability of the water head difference during the test, and the large change of the water head difference will affect the test accuracy

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