强风化千枚岩路基填料室内水分迁移试验研究  

The Moisture Migration Laboratory Experiment of Strongly Weathered Phyllite Subgrade Filling

作　　者：毛雪松[1] 李汶霖[1] 张海宁[1] 孟庆猛[2] 

机构地区：[1]长安大学特殊地区公路工程教育部重点实验室,西安710064 [2]中交四航工程研究院有限公司,广州510230

出　　处：《科学技术与工程》2016年第19期110-115,共6页Science Technology and Engineering

基　　金：国家自然科学基金项目(51378072);长安大学中央高校基金重点项目(CHD2010ZD003)资助

摘　　要：水分是影响强风化千枚岩路基填料崩解、破碎的关键因素,决定着强风化千枚岩填筑路基的稳定性。通过滤纸试验测定了风化千枚岩填料的土水特征曲线,分析了该土样含水率与基质吸力的关系。应用自主研发的设备进行了强风化千枚岩填料水分迁移试验,通过对比试验分析了风积沙隔断层对强风化千枚岩填料水分迁移路径的影响,揭示了水分迁移机理。结果表明,风积沙隔断层可以改变强风化千枚岩填料的水分迁移特性,具有良好的隔水作用。The moisture is the key that accelerate phyllite becoming collapsed and crushing,so if the phyllite be used for subgrade filling could lower the road stability.Filter paper was used got the soil-water characteristic curve,and analyzed the relationship between the moisture content and the material suction.Apply the testing equipment that developed by ourself conduct an experiment that about the moisture migration of strongly weathered phyllite,through this contrast experiment,its moisture migration was analyzed that with aeolian sand insulating course,and reveal the moisture migration mechanism.The results show that the aeolian sand insulating course can strongly change the moisture migration characteristics of weathered phyllite wastes,with well waterproof function.

关 键 词：路基填料 水分迁移 室内试验 强风化千枚岩 风积沙隔断层 

分 类 号：U416.1[交通运输工程—道路与铁道工程]