Sand Movement Reduction

G.Tex has developed a sand fencing product that reduces the movement of sand over nearby structures or areas. In the Middle East moving sand is a major issue for a lot of companies and organizations whose operations are affected by sand, usually by the cost of maintenance to ensure their structures are clean. By installing our sand fencing at the correct nearby location you can reduce the maintenance cost of sand cleaning or removal dramatically. 

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In the absence of moisture or other cohesive binders, the sand dune is subject to movement in 3 main mechanisms (suspension, saltation, creep and gravitational sliding). Suspension accounts for 5% of the transport, involving very small particle sizes. Almost 75% of the sand travels by saltation, a trajectory movement for medium sized particles. Large particles move by surface creep and represent 20% of the transported sands.

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Sand movement is largely a function of the geomorphology aspects as follows: 

  • Wind velocity: A minimum of 6 m/s wind speed is needed for sand transport.

  • Particle size: heavy particles creep on the surface, while small ones fly in suspension.

  • Terrain type: As example, sand transport is rare on Sabkha surface; one possible scenario attributes this to the wet surface of the Sabkha.

  • Vegetation cover: This increases surface roughness, thus decreasing surface wind speed.

  • Groundwater: areas with shallow groundwater resist sand dune advancement.

  • Precipitation: this directly affects surface hardness and vegetation.

  • Temperature: high temperatures increase the mobility of sand particles. 

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