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简要介绍了非饱和土的吸力概念与土水特征曲线 ,针对土水特征曲线难以描述的问题 ,对北京地区普遍分布的非饱和粉质粘土进行研究。利用 Tempe压力板吸力仪测出粉质粘土的土—水特征曲线 ,通过线性拟合分析得出其吸力方程 ,并对方程进行了误差分析
The concept of suction and the curve of soil-water characteristics of unsaturated soils are briefly introduced. According to the problem that soil-water characteristic curve is difficult to describe, the unsaturated silty clay widely distributed in Beijing is studied. The soil-water characteristic curve of silty clay was measured by using Tempe pressure plate suction meter. The suction equation was obtained by linear fitting analysis, and the error of the equation was analyzed