摘要
利用柔性壁渗透仪对土工合成黏土衬垫(Geosynthetic Clay Liner,GCL)的渗透系数进行测定时,试验条件的设置会对测定结果产生重要的影响。文章阐述了有效应力、渗透溶液特性、预水化、水力梯度以及试验终止标准等试验条件对GCL渗透系数的影响机理,介绍了过去20年GCL渗透系数测定技术的发展历程,重点分析了目前GCL渗透系数测定过程中尚存在的问题。本研究有助于正确认识已有数据和结论,同时对后续试验的开展也具有一定的指导意义。
Hydraulic conductivity of the geosynthetic clay liner（ GCL） is usually measured through a flexible wall permeameter. During the process of test,a number of testing conditions may produce a great affect on the precision of the testing results. These testing conditions include the effective stress, characteristics of permeating solution,prehydration of the GCL,hydraulic gradient and termination criteria. In this paper,a review of the affecting mechanism of the testing conditions on the testing results of the hydraulic conductivity of GCL is presented. The development process of the testing for hydraulic conductivity of GCL is also discussed.In particular,some issues which are stilled not be resolved in the testing process are highlighted and discussed. The results are useful for someone to hold a right view on the former research works and conduct further research work in the future.
出处
《水文地质工程地质》
CAS
CSCD
北大核心
2016年第4期153-158,共6页
Hydrogeology & Engineering Geology
基金
中煤科工集团西安研究院科技创新基金(2015XAYMS21)
陕西省教育厅专项科研计划项目(11JK0761)
关键词
土工合成黏土衬垫层
渗透系数
测试条件
柔性壁渗透仪
geosynthetic clay liner（GCL）
hydraulic conductivity
test condition
flexible wall permeameter
