摘要
吸力是决定非饱和土性质的一个重要参数,其测试过程一般对仪器、人员和环境的要求较高,且耗时较长。综合考虑各吸力测试方法的可行性等特点,本文以延安不同干密度的压实黄土为试验对象,选取了盐溶液法和滤纸法两种方法进行总吸力测试,对两种测试方法所得到的试验数据进行对比,并基于已有的试验数据,对饱和盐溶液法和滤纸法两种方法的测试误差进行了分析。
Suction is an important parameter determining the characters of unsaturated soil.The testing process of suction generally requires high on instruments,personnel and the environment,and it takes a long time.Comprehensively considered the feasibility and other factors of each suction test method,this paper takes the compacted loess with different dry density in Yan’an as the research object,and selects the saturated salt solution method and the filter paper method for the total suction test.The test data obtained by the two test methods were analyzed and compared,and the test errors of the two methods of saturated salt solution and filter paper were analyzed based on the test data.
作者
谢潇
王璐瑶
彭飚
XIE Xiao;WANG Luyao;PENG Biao(Shaanxi Land Engineering Construction Group,Xi’an,710075,China;Institute of Shaanxi Land Engineering and Technology Co.,Ltd.,Xi’an,710075,China;Key Laboratory of Degraded and Unused Land Consolidation Engineering,the Ministry of Natural Resources,Xi’an 710075,China;Shaanxi Provincial Land Consolidation Engineering Technology Research Center,Xi’an,710075,China)
基金
陕西省土地工程建设集团有限责任公司内部项目“石灰在改良黄土力学性质中的效应及机理研究”(DJNY2019-22).
关键词
非饱和土
吸力
滤纸法
饱和盐溶液法
unsaturated soil
suction
filter paper method
saturated salt solution method
