岩土工程学报2017，Vol.39Issue(4)：609-616,8.DOI:10.11779/CJGE201704004
反滤层设计原理与准则
Design principles and guidelines of filters
摘要
Abstract
The design criteria of Terzaghi filter layer have laid the foundation for the researches on filter layers, which are safet enough for uniform cohesionless soil, but not secure for uneven cohesionless soil, and they are not suitable for other types of soil. The existing research results are reviewed based on the design criteria of Terzaghi filter layer for various types of filters with different permeability damages. The control principles and methods are put forward to determine the control grain sizes of different types of soil so as to expand the scope of the criteria. The research results show that for the uneven non-viscous filter layer of soil, the fine particles should be protected. Some experiments are performed to confirm the principles and methods to get the particle sizes of the fine materials. In the process of experiments, Using 70 d of fine materials to be the control grain size, and the regression method is used to get the results to determine the control grain sizes of the entire soil. Finally, the design criteria of filter layers for different kinds of soil are obtained. The results may provide reference and guiding significance for engineering design of practical filter layers.关键词
反滤层/等效粒径/控制粒径/砾石土/无黏性土Key words
filter/equivalent diameter/dominant diameter/gravel soil/cohesiveless soil分类
建筑与水利引用本文复制引用
刘杰,谢定松..反滤层设计原理与准则[J].岩土工程学报,2017,39(4):609-616,8.基金项目
国家重点基础研究发展计划("973"计划)项目(2014CB047004) （"973"计划）
