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The service life of glass fiber geogrid is longer than that of metal mesh products in harsh environment

Author: Hengke Shandong HuaSu Engineering Co., Ltd Time: 10:56, August 8, 2020 Visits: second
Description: fiberglass geogrid composites reduce relief well plugging. The main measure to reduce sludge is to change the filter into a detachable filter and use foam plastic as the main body of the filter. It can be divided into fixed part and detachable part. The fixed part is inverted filter layer, filter screen and well tube from outside to inside.
 Glass fiber geogrid

The service life of glass fiber geogrid is longer than that of metal mesh products in harsh environment

Glass fiber geogrid Composite material can reduce the blockage of relief well. The main measure to reduce sludge is to change the filter into a detachable filter and use foam plastic as the main body of the filter. It can be divided into fixed part and detachable part. The fixed part is inverted filter layer, filter screen and well pipe from outside to inside; the detachable part is foam plastic filter wrapped with nylon mesh and supported by hard plastic inner well pipe. The foam filter can always be cleaned or replaced with good water permeability.

It should be noted that on the premise of meeting the particle filtration standard, the particle filter material and glass fiber geogrid in the filter body should be made of materials with larger particle size as far as possible. For example, particle materials with particle size of 8 mm and 13 mm were used in cannon Jimen relief well and Mississippi River relief well in the United States. Some projects also use geotextile as filter layer. For example, two layers of 350 g / m2 geotextile are used as the filter layer for the relief well of Yangxin river embankment in Wuhan, and the geotextile or nylon mesh of 350 g / m2 is used for the relief well of Anhui river embankment. They need to be improved.
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In terms of the structure and implementation of the filter body, the glass fiber geogrid filtration system is composed of porous polyurethane foam with a thickness of 50 mm, and the filter body is composed of hard plastic flower tubes with a diameter of 280 mm, which mainly supports the foam. The foam plastic is wrapped with 400 nylon net to make it closely fit with the plastic flower tube. Prevent the filter from falling off during placing and pulling up. The length of each section of the filter body is 2, and the sections are connected by bolts.
Geogrids can be used in harsh environments for decades. It has high tensile strength, carbon black corrosion resistance and low engineering cost. It replaces the traditional strengthening materials. Plastic tensile geogrid is a kind of network building material made of high-density polypropylene or high-density polyethylene through hot-melt stretching. The outer layer of steel plastic geogrid is wrapped by PVC plastic layer.
The double resistant geogrid used in coal mine is based on the common plastic bidirectional geogrid, which is treated by adding antistatic agent and flame retardant. It is used as the side protection net and false roof net of coal mine. The modified plastics have excellent and stable physical and chemical properties, such as aging resistance, high temperature resistance, water resistance, rust resistance, UV resistance and wear resistance, which determines that the service life of modified plastics is longer than that of metal mesh products. Glass fiber geogrid also has its special technology, such as modified asphalt coating, transverse and longitudinal braiding, as well as the overall tensile strength and stable physical and chemical properties.