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非饱和土土水特性试验是获取非饱和土力学参数的重要途径,但由于耗时过长,严重影响着非饱和土理论的实际应用。本文利用新型土水特性曲线压力板仪,对河北省范围内三处典型地区的土质进行了土水特性曲线室内试验,分析研究了土质、埋深与孔隙率对土水特性曲线的影响。在此基础上构建了河北地区土水特性曲线数据库,通过数据库可以快捷地得到相应地区同类土层的土水特性曲线参数,为快速获取非饱和土力学参数提供了途径。
Unsaturated soil water characteristics test is an important way to obtain the mechanical parameters of unsaturated soil, but due to the time-consuming, it seriously affects the practical application of unsaturated soil theory. In this paper, soil characteristics of soil in three typical areas in Hebei Province were tested in a laboratory with a new soil-water characteristic curve pressure plate tester. The influence of soil quality, burial depth and porosity on the soil-water characteristic curve was analyzed. Based on this, a database of soil-water characteristic curve in Hebei Province was constructed. Through the database, the parameters of soil-water characteristic curve of the same soil layer in the corresponding area can be obtained quickly and easily, which provides a way to obtain the mechanical parameters of unsaturated soil rapidly.