Geotextile need to take a variety of methods Qiang Hu: riparian vulnerable spot and sometimes difficult to distinguish between the dike vulnerable spot, flood embankments may be a variety of risks clear, geotextiles Qiang Hu need to take a variety of methods, such temporary insurance appears clear. generally do not call it a vulnerable spot. According to their relative position causes rivers vulnerable spot is usually divided into the following categories. 2.1 Shoreline corners vulnerable spot in the corners with full case will shore and concave, convex bank silt into the custom-made staple fiber geotextiles, continue to form a series of curved natural embankment between the presence of these curved embankment natural depressions collectively These curved embankment mane natural terrain will post back to the downstream turbidity with concave bank, to a death trip back into the lateral erosion and pitting late in the upstream end of the spokes together, the downstream end or both ends of the spokes spoke gather together. For example, Liaoning Haicheng fan face danger, situated on the left bank big son, Wen Hong Village southeast of extinction before the levee 'heart bias on the right bank of river bend flow, forming wave and current, so severe shore erosion. Puncturing meter-long river main channel shore from large 堤脚 only 27m, down the shore has formed deep groove. Another example is located in the sea trench railway bridge Sancha AM tour around the left bank of the big son Daliaohe vulnerable spot. Flow heart biased left bank of the river curvature of 1.9, making the rate of radius bsom short silk geotextile manufacturers, COLLAPSE length of 15M I m. 2.2 straight section vulnerable spot filament geotextile impermeable protection from flat shape, the constant presence of the river between the relatively short straight short silk geotextile wholesale distribution on both sides of the river channel has jagged edges and deep grooves beach, down deep grooves The transition section, often called the shallows. Reach judge straight key indicators is tortuous factor. According to long-term employment at the North River and three spare straight reach of information, its coefficient of less than 1 .1so tortuous river with coefficient 1.39, 7.8, varies widely, but the same river Riij small changes. Filament geotextile infiltration mechanism, there are two views: One is that there can be no good geomembrane liquid channel has generated only by the diffusion of gas leakage; another view was that these two types of infiltrations c phenomena may exist but the common thought: when there is a hole or crack and other defects pick blooming on geomembrane will produce heavy bleeding measured liquid. - Some experts holes or gaps on the seepage filament geotextile has been tested to be of the research work of Liu Tao · towel. Filament geotextile tendon problem, geomembrane leakage short silk geotextile is vital in environmental engineering. Especially when the use of geomembranes deal with toxic waste, but also to adopt a cautious attitude ': research on this subject. Many experts are attention. In recent years, the use of "raccoon geosynthetic soil mat (ccL)" prevent waste pollution research work has been applied to practical engineering old i. Shop on the particle formation or by the thickness of the gap geomembrane water pressure load is calculated when there are three of the following methods: (1) by Gu Chen (1985) film La theoretical formulas; (2) the USSR All-Union Scientific Hydraulic Experience public Institute "i; shop (3) J.P.GI then d (1982) in the slit film approximation liter three methods described above do not in, J.P.QMud formula applies only shop. geomembrane thickness in the gap calculation formula applies only to the Soviet experience geomembrane gravel layer thickness calculation formulas are applicable to both film theory, analysis of the results from the difference is not very big, so the above calculation results in engineering design can basically meet the requirements. However, poor water conservancy ten thousand other dry surrounding conditions change department may affect the results. At the same time, there has yet to determine the long-term observation and analysis of information security reserve of the three calculation methods in the end how much c Therefore, in the latest edition of the "Water Resources and Hydropower Engineering geosynthetics technical specifications" (5uT 225- 98) L "some of the provisions' of the obviously artificial, its provisions are too geomembrane thickness is too large, not fully material itself The role of significance. The best short silk geotextiles, Hanzhong staple fiber geotextiles, Shandong Edison Group offers new material by the Edison Company. 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!