土工织物反滤作用研究进展

土工织物作为反滤材料已在众多工程领域得到了成功的应用.由于土工织物应用环境的复杂化和被保护土体的特殊性,需要深入地分析和认识土工织物的反滤机理,这对土工织物反滤作用的正常发挥具有重要的工程应用价值.基于国内外众多学者的研究成果,总结了在"土-土工织物"体系中土体"自反滤层"的形成机理和土工织物的反滤特性,分析了土工织物...

Research Progresses on Geotextile Filtration

Geotextiles have been successfully used as filter materials in geotechnical practice of different fields. Due to the complexity of the application environment of geotextiles and the unique characteristics of the protected soil, studying the filtration mechanism of geotextiles as a filter is of important engineering application value. In the present paper, the formation mechanism of soil's “self-filtering layer” in “soil-geotextile” system and the filtration characteristic of geotextiles are summarized. The major factors affecting the filtration performance of geotextiles are analyzed, and the differences in the criteria of soil retention, water permeability, and anti-clogging of geotextiles are also discussed. Moreover, limits in existing studies and applications of geotextiles as filter materials are expounded. Such limits include the filtration characteristics of geotextile filtering fine-grained soil, and the application of filtration criteria in practical engineering. To ensure the normal function of geotextile filtration, targeted criteria for geotextile filtration should be established in line with application environment.