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为防止渗流作用下土体流土或管涌,1922年著名土力学家太沙基(Terzaghi,k.)首次提出用砂砾料组成滤层保护以来,各国学者对滤层结构和反滤材料进行了广泛的试验研究。1958年美国佛罗里达州的护岸工程,首次应用土工织物滤层替代传统的砂砾反滤层,并获得良好效果。七十年代初,法国以土工织物作为滤层在伐尔克罗斯(Valcros)坝上游面及下游面应用,嗣后,土工织物在水利工程上得到广泛应用。 (一)土工织物的主要功能 1.排水作用——土工织物是一种透水材料,具有良好的透水性,故可以排除地表水或地下水。 2.反滤作用——土工织物过滤功能是和
In order to prevent the seepage of soil flow or piping under the action of soil, Terzaghi (k.), A famous soil mechanic in 1922, proposed for the first time the protection of sand and gravel composition filter layer. Extensive experimental research. In 1958 Florida’s revetment project in the United States, the first application of geotextile filter instead of the traditional grit filter, and get good results. In the early seventies, geotextiles were used as filters in the upper and lower reaches of the Valcros dam, and subsequently geotextiles were widely used in hydraulic engineering. (A) The main function of geotextile 1. Drainage effect - Geotextile is a permeable material, with good water permeability, it can exclude surface water or groundwater. 2. Filter function - geotextile filtration function is and