【作者】 张虎元； 吕擎峰； 王宝； 简文星；

【Author】 ZHANG Hu-yuan~1,LV Qing-feng~1,WANG Bao~1,JIAN Wen-xing~2 (1.Collage of Civil Engineering & Mechanics,Lanzhou University;Key Lab of Mechanics on Western Disaster & Environment, MOE,Lanzhou 730000,China;2.Collage of Resource & Environmental Science,Lanzhou University,Lanzhou 730000,China; 3.Faculty of Engineering,China University of Geosciences,Wuhan 430070,China)

【机构】 兰州大学土木工程与力学学院西部灾害与环境力学教育部重点实验室； 兰州大学资源环境学院； 中国地质大学工程学院；

【摘要】 选择商用膨润土和天然粘土为实验材料,通过室内击实试验、渗透试验和直剪试验研究粘土-膨润土混合物的工程性能,并和相关资料进行了对比,试图建立膨润土与其他天然土性质之间的联系。简要介绍了膨润土渗透性研究相关的仪器、技术方法、最新发展趋势,认为高放废物地质处置中的缓冲材料研究,需要借助柔性壁渗透仪联合开展渗透试验与穿透试验。更多还原

【Abstract】 Commercial bentonite and a natural clay were used to study the engineering properties of clay-bentonite mixture by compaction test,hydraulic conductivity test and direct shear test.Test results are compared with that of other researchers in an attempt to find the relationship between the properties of bentonite and other natural soils.Explaining briefly the outline about permeameter and testing methods for bentonite in recent years,the authors suggest that hydraulic conductivity test should be conducted simultaneously with break-through test by flexible-wall permeameter on bentonite buffer material for geological disposal of high level radioactive waste.更多还原