国内外土工合成材料反滤准则对比分析  

Contrast analysis of geosynthetics filter criteria home and abroad

作　　者：程兴奇[1] 刘福臣[1] 成英昌 

机构地区：[1]山东水利职业学院,山东日照276826 [2]日照中豪建筑设计有限公司,山东日照276826

出　　处：《水运工程》2009年第3期36-40,共5页Port & Waterway Engineering

摘　　要：通过案例比较分析了国内外不同规范中对等效孔径的定义、测定方法、大小关系等。对单向水流、双向水流保土准则对比分析表明,《水利水电工程合成材料应用技术规范》考虑了土的类型、土的不均匀系数、土工织物种类、土颗粒组成等因素的影响,给出的反滤准则合理;而《土工合成材料应用技术规范》、《水运工程土工织物应用技术规程》保土准则过于简单;《水运工程土工织物应用技术规程》给出的双向水流保土准则与德国准则基本一致,充分考虑了土的级配和双向水流特性,给出的准则全面合理;《土工合成材料应用技术规范》的双向水流保土准则过于简单,不能反应双向水流对土工合成材料反滤准则的影响;《水利水电工程合成材料应用技术规范》没有给出双向水流保土准则,建议增加双向水流保土准则。Through the case study we analyze the definitions,measurements and sizes of the equivalent aperture in different specifications home and abroad.We carried out a comparative analysis on the soil criteria of the undirectional and bidirectional current of three specifications,i.e.Water conservancy and hydropower project synthetic material application technical specifications,Application of geosynthetics technical specifications and Port ＆ waterway of geosynthetics technical specifications.The result reveals that in the first specification,the factors such as soil type,asymmetry coefficient,type of synthetic textile and granule composition are considered and the filter criterion given is reasonable and correct;in the second and three specifications,the soil criteria given are too simple;In the third specification the soil criteria for bidirectional current is in accordance with the German criterion,considering the soil′s granule content and bidirectional current characteristics,and the specification is proved to be complete and reasonable;while the second specification is too simple and can not reflect the influence of bidirectional current on the filter criterion.The first specification does not give out the soil criteria of bidirectional current,so it is suggested to add this content.

关 键 词：土工合成材料 等效孔径 反滤准则 保土准则 透水性准则 

分 类 号：TU531.7[建筑科学—建筑技术科学]