Geotextile river channel flow in rivers flowing through the passage of discharge process called river channel. Because the water in different seasons of different sizes, so the river channel is divided into dry river shoot, the river and flooding river channel grid. The dry river channel for the dry season flow channel, an narrow and deep, and relatively stable; the cloth in water and soil occur in the river channel to channel the river water when, also known as the main channel, depth big, rough slaughter small, red Cheap silt strength filament geotextile, give vent to rely mainly on water flood river channel. Regarded its corresponding flow bed discharge; flood river channel to vent their river flood channel, river channel width, flow rate, in the plains, it is generally based on the design in the construction of river embankments on both sides of the river channel flood control embankment between the two sides. (2) geotextiles main line linking the largest rivers in the average vertical velocity curve is called the river the power axis, geotextiles, also known as river flood control basics mainstream line * Ting River mainstream line in the flood, water, dry season vary same period of the flood of mainstream line near the center of the river. (3) geotextiles deep river channel to connect each section line of said maximum depth soundings along, also known as river lines. Rivers corners, deep flood line bias near the concave bank; between two bends, deep throw line transition from one bank to another concave recess shore. Rivers and river bottom surface slope gradient were all measured o (4) of beach and river flow interaction in river channel often formed into various shapes deposits along deep along. These deposits as connected with the bank, filament geotextile manufacturers when submerged in the flood, when exposed called dry shore beach, also known as side bar. Jiang river plain area beaches and some can be reclaimed as farmland, so also known rivers. (5) geotextile dikes in order to restrict water flow and flood defense, attack waves, tides, in rivers, lakes, coastal sea water retaining structures called dike construction. In the century 60--70 years, the design filament geotextile geotextile filter layer, a group that the decision on several major soil hydraulic properties are protected and fabrics. Such as soil particle size and permeability of the fabric pore size, custom-made filament geotextile permeability, open 7L and area size and fabric c 7L path where soil plays a decisive role. It has made reference to the classical design principles pellets filtration through test analysis, different design criteria, according to the characteristics of soil particle size selection of fabric apertures. Test Method for aperture on fabric, initially used for sieving or wet sieving. Since 1977 D. Yang made the power of water sieve method M Chen Chong, in recent years has been used by many countries. For fabric aperture design. Since the 1970s, not of experts to consider more factors: the protected territories such as particle size distribution, uneven degree, density, etc. teach; seepage flow regimes - laminar or turbulent flow; The direction of flow - a one-way or two-way, in line with the direction of gravity or opposite; openings of the fabric, the thickness of the structure, as well as the forces filament geotextile, and the like, made more complex design is pushed, and a long-term laboratory and prototype observation to verify the accuracy of these guidelines. However, agreement has not yet been recognized pattern. Push the fabric permeability had a similar situation. In view of the comments on the design criteria of divergence, thus filament geotextile Some experts suggested by the test to select fabric, namely the use of protected territories and fabric filter simulated tests to determine whether the fabric can meet the requirements. Practical filament geotextile, geotextile filament Meishan, Edison Group Edison new material provided by the Corporation. Edison New Materials Co., Ltd. (www.fangshenmo.com) strong, credible, in Dezhou site construction materials industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Edison new materials into the brilliant and you work for a better future!