The use of geotextiles in the filtering function of dams

It should be said here that geotextile is mainly used in the foundation of the dam, in order to lay the effect, geotextile is usually combined with geonet together with the use. Geotextile is a new material in geotechnical engineering, but also recognized by most engineers as a kind of environmental protection materials, so its application in a number of environmental protection projects is quite large, at the same time, because of geotextile, the filtering role is very good, its application in reservoir There are also many other projects.

Dam project also belongs to one kind of environmental protection project, in dam project, geotextile mainly plays the role of anti-filtration, as long as the construction process of geotextile is fixed well, then even for seaside dams, in the repeated action of ebb and flow of tide , geotextile can be a normal role.

The application of geotextile in the dam project is the construction of the main measures taken in two ways: on the one hand, directly into the silt on the geotextile foundation, so that the silt in the dam foundation of water shoots out, so that solidification, increasing the stability and strength of the dam foundation; On the other hand, geotextiles over the laying of the geogrid layer use the tensile strength of its very gas, which help improve the stability of the dam foundation, in which the geogrid can also play a role in protecting the geotextiles.

In the dam project for the use of geotextiles anti-filtration role, geotextiles as an anti-filtration material, then its hydraulic properties of permeability coefficient requirements are very high, the general requirements of the permeability coefficient are more than 10 times the soil.

Geotextiles play an anti-filtration role in applications or more, but generally more will be used in permanent pavement and reservoir projects. Regarding geotextiles, how to play the role of anti-filtration, generally speaking, under the influence of permeability, due to the smaller particles close to the geotextile, and this situation is gradually removed from the geotextile, and then a certain thickness of the top layer is gradually formed, the permeability coefficient of the top layer is very large , and in geotextiles play a role at the same time, in the top layer of the top layer there will be the formation of a natural filtration layer, which will play a role. This can play the role of anti-filtration and thus play a role in soil retention.