摘要
对判断土工织物淤堵的梯度比试验从理论与试验两个方面进行了研究。本文在理论上推导得出了梯度比用于判断土工织物淤堵的适用条件;试验结果也揭示了梯度比指标失效的原因。在此基础上还提出了淤堵试验的改进方案,并给出了采用淤堵试验中的系统渗流速度和渗透系数作为土工织物淤堵判断指标的方法。
The paper analyses the disadvantage of current clogging test for geosynthetics and develops the Gradient Ratio Test (GRT) in theory and experiment.The theoretic limit condition of Gradient Ratio Criterion (GRC) is deduced and the reason for the failure of GRC is validated by experiments.A modified GRC is designed and flow velocity or coefficient of permeability is suggested to be the index to evaluate the clogging of the system of soil and geosynthetics.
出处
《公路交通科技》
CAS
CSCD
北大核心
2004年第7期33-38,共6页
Journal of Highway and Transportation Research and Development
基金
西部交通建设科技项目资助(2001 318 000 30)
关键词
土工合成材料
淤堵
试验
渗流速度
渗透系数
Geosynthetics
Clogging
Test
Flow velocity
Coefficient of permeability
