透水石湿度对黄土湿陷性试验的影响机理  

Mechanism on Effects of Saturation Degree of Permeable Stone on Subsidence Test for Loess

作　　者：汤连生[1] 

机构地区：[1]中山大学地球科学系,广东广州510275

出　　处：《中山大学学报（自然科学版）》2003年第3期83-85,共3页Acta Scientiarum Naturalium Universitatis Sunyatseni

基　　金：国家自然科学基金资助项目 ( 5 0 2 790 5 6 ;5 97790 19);广东省自然科学基金资助项目 ( 970 12 7)

摘　　要：运用概化模型 ,根据毛细水的运移规律 ,解释了其机理 ,分析了透水石的湿度与湿陷试验中黄土变形之间关系。结论认为 ,湿陷性试验中透水石和滤纸均必须是干燥的才能保证所测定的湿陷系数的精度。The saturation degree of permeable stone may exert tremendous influen ce on subsidence tests for loess. The relationship between information of loess in subsiderce tests and saturation degree of permeable stone was analyzed by general model and law o f capillary water moving.The mechanism for the influence of saturation degree o f permeable stones on subsidence tests was explained.It was concluded t hat only the adoption of dry permeable stone in the subsidence test grarantee th e precision of subsidence coefficient of loess by testing.

关 键 词：透水石 饱和度 黄土 湿陷 毛细水 吸力 

分 类 号：P642.131[天文地球—工程地质学]