High-pressure hydration consolidation retention box device of geosynthetic clay liner

Abstract

The invention provides a high-pressure hydration consolidation retention box device of a geosynthetic clay liner, and belongs to the technical field of geotechnical engineering. The high-pressure hydration consolidation retention box device consists of a framework, a hydration system and a pressurizing system; the geosynthetic clay liner can fully absorb water in a water permeating cylinder to complete hydration by the hydration system through a movable rectangular water permeating cylinder, a detachable water permeating cylinder, a push-out rail of the water permeating cylinder, a limiting support column, a water permeating support grid and a water drain valve; the any positive pressure can be applied to the hydrated geosynthetic clay liner by the pressurizing system through a loading plate, a lever, a force transfer shaft, a balance lever, an n-shaped loading framework, a loading threaded rod, a lever rotary shaft and a water drain valve, so as to complete the consolidation and waterdrainage process under the action of positive pressure. The high-pressure hydration consolidation retention box device has the advantages that the real service condition of the geosynthetic clay liner can reoccur, so as to provide great help for testing the mechanical property of the geosynthetic clay liner by an indoor geotechnical testing method under the actual working condition.

Description

technical field [0001] The invention belongs to the technical fields of geotechnical engineering and environmental engineering, and in particular relates to a geotechnical composite bentonite liner (GCL) high-pressure hydration consolidation holding box device. Background technique [0002] Geosynthetic clay liner (Geosynthetic clay liner, GCL) is a kind of composite anti-seepage with low permeability coefficient formed by two layers of geotechnical polymer (geomembrane, geotextile, etc.) Materials, my country's "Technical Specifications for Domestic Garbage Sanitary Landfill Treatment GB50869" and "Technical Specifications for Geotechnical Engineering of Domestic Garbage Sanitary Landfill Sites CJJ176" both stipulate that geomembrane and geotechnical composite bentonite liners should be used in domestic waste landfills In the form of a bottom pad for the body. In the bottom liner of the landfill, the working principle of the geotechnical composite bentonite liner is to use t...

AI Technical Summary

Problems solved by technology

At present, there is no special hydration device for geotechnical composite bentonite liner, and the hydration process of geotechnical composite bentonite liner shear test that has been carried out often adopts a relatively rough method, resulting in incomplete hydration of geotechnical composite bentonite liner, which greatly affects Accuracy of test results

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