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Vertical permeability clogging and reduction testing device of geocomposite drainage material filter membrane and detection method thereof

A test device and drainage device technology, applied in the direction of measurement device, test sample preparation, permeability/surface area analysis, etc., to achieve good water tightness and air tightness, simple equipment, and easy operation

Pending Publication Date: 2015-05-27
GUANGXI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the quantitative test problem of the clogging reduction index of the geotechnical composite drainage material filter membrane, and propose a kind of geotechnical composite drainage material filter membrane vertical penetration silt reduction test method

Method used

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  • Vertical permeability clogging and reduction testing device of geocomposite drainage material filter membrane and detection method thereof
  • Vertical permeability clogging and reduction testing device of geocomposite drainage material filter membrane and detection method thereof
  • Vertical permeability clogging and reduction testing device of geocomposite drainage material filter membrane and detection method thereof

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Embodiment Construction

[0035] Below in conjunction with specific embodiment, further illustrate the present invention.

[0036] A geotechnical composite drainage material filter membrane vertical penetration silting reduction test device is characterized in that it includes the following devices, a water inlet device, a load device, and a drainage device;

[0037] The water inlet device includes an assembled water level pipe 11, a water stop gate 12, a drain nozzle 13, a slidable fixed support 15, a connecting hose 17, and a water supply pipe 16. One end of the assembled water level pipe 11 is connected to the water supply pipe 16, The other end is connected to a connecting hose 17. One side of the side wall of the assembled water level pipe 11 has a plurality of drain nozzles 13, and the drain nozzles 13 are controlled by the water stop gate 12, and the other side has a slidable fixed support 15. The other end of the slidable fixed support 15 has a scale 14;

[0038] Described loading device has s...

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Abstract

The invention belongs to the technical field of geosynthetic testing, and relates to a vertical permeability clogging and reduction testing device of a geocomposite drainage material filter membrane. In the processes of the method, a filter membrane test sample contains filter membrane surface depositing soil and is made by taking a geocomposite drainage material that clogging occurs after use out of a soil layer in accordance with a preset sample making method. The test sample is subjected to a contrast test with a filter membrane test sample which is not used by virtue of a researched vertical permeability coefficient testing device (the device can be used for testing filter membrane vertical permeability coefficients under conditions of different hydraulic gradients and different lateral pressure coefficients), so as to obtain filter membrane clogging and reduction indexes. The invention provides a method and a corresponding device for the quantitative test of clogging and reduction of the geocomposite drainage material filter membrane for the first time; and the device has the advantages of being simple, easy and simple in operation and high in measurement precision, and is suitable for testing the vertical permeability coefficient of a geocomposite composite material.

Description

technical field [0001] The invention belongs to the technical field of testing geotechnical synthetic materials and can be used for quantitative testing of filter membrane clogging reduction of geotechnical composite drainage materials. Background technique [0002] Geotechnical composite drainage material is a composite drainage material composed of core materials of different shapes made of thin geotextiles wrapped in different materials. The drainage channel of the material is unobstructed, and the outsourcing geotextile acts as a filter layer to prevent particles from entering and blocking the drainage channel. In recent years, with the development of geotechnical composite drainage materials, it has been widely used in soft soil foundation treatment, roadbed vertical and horizontal drainage, building underground drainage channels, dam drainage facilities and other fields. However, during the use of geotechnical composite drainage materials, water flows through the filt...

Claims

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Application Information

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IPC IPC(8): G01N15/08G01N1/28
Inventor 欧孝夺吴光航李结全侯福昌潘鑫苏建
Owner GUANGXI UNIV
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